A canning and packing production line for square cans

Abstract

The utility model discloses a kind of boxing and packing production lines of square cans, including can boxing machine and folding cover sealing machine, can boxing machine includes first rack, can conveying mechanism, packing box conveying mechanism, can be driven under can conveying mechanism and moves along horizontal direction into material arranging platform, the can at most front end is under the block of can blocking piece, so that multiple cans are in turn close together in the middle position of material arranging platform;Rotatable material receiving plate is equipped on both sides of material arranging platform, and material receiving plate is formed after being rotated to position downwards into discharge port;First pusher respectively pushes multiple cans to material receiving plate on both sides of material arranging platform;Packing box is sent to below material receiving plate by packing box conveying mechanism;Multiple first suction cups suck multiple cans on material receiving plate and move downwards through discharge port and pack multiple cans into packing box;Complete boxing packing box is completed after folding cover and pasting gum paper by folding cover sealing machine folding cover and sealing packing.This utility model is higher in automation degree, boxing efficiency, action reliability.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment manufacturing technology, and in particular to a boxing and packaging production line for square canned goods. Background Technology

[0002] Canned food is a type of packaged food made in a sealable container using sheet metal, glass, plastic, or a combination of these materials. After specific processing to achieve commercial sterility, it can be kept at room temperature for an extended period without spoiling. Cans made from sheet metal are mostly square or cylindrical in shape.

[0003] These canned goods require multiple cans to be packed into boxes, sealed, stored, and transported during the sales process. Traditionally, boxing and packing are done manually, which is labor-intensive, inefficient, and costly. To solve the boxing problem, people began to design machinery for boxing.

[0004] For example, a Chinese invention patent application with patent number 201811357221.9, entitled "An Automatic Canning Machine for Fruits and Vegetables," was published on April 5, 2019. This invention includes a can conveying device, a boxing device, and a box conveying device. A support is welded to the upper side of the base, and the can conveying device is mounted on the upper side of the support. A motor is installed on the side of the can conveying device, and a conveyor belt is installed inside the can conveying device. A baffle is installed inside the can conveying device, and a counter is installed on the upper side of the can conveying device. Cans are placed on the upper side of the conveyor belt, and an adsorption rod is installed at one end of each can. One end of the adsorption rod is connected to a telescopic rod, which is connected to a movable base. The boxing device is embedded in the left side of the movable base, and the box conveying device is located on the left side of the can conveying device. This utility model application discloses an automatic canning machine for fruits and vegetables, which improves work efficiency by replacing manual boxing with an automatic boxing device. However, this type of carton packing machine uses a row-by-row packing method. Each row of packing requires the coordinated action of multiple moving parts, such as suction rods, telescopic rods, and moving seats. On the one hand, the packing efficiency is relatively low, and it is difficult to form multi-layer packing. On the other hand, if there is a misalignment between adjacent rows of cans, or if the packaging box is not positioned accurately, packing failure is likely to occur, resulting in low reliability. Furthermore, this type of automatic carton packing machine cannot automatically fold, seal, pack, and seal boxes, and its level of automation needs to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a boxing and packaging production line for square canned goods, which has a high degree of automation and boxing efficiency, and high reliability of operation.

[0006] To achieve the above objectives, the technical solution of this utility model is: a boxing and packaging production line for square canned goods, including a canning machine and a lid-folding and sealing machine. The canning machine includes a first frame, a can conveying mechanism, and a box conveying mechanism. A sorting platform is provided in the middle of the first frame. The cans move horizontally into the sorting platform under the drive of the can conveying mechanism. A can blocking component is provided on the top of the sorting platform. The can blocking component is fixedly connected to the first frame. The blocking surface of the can blocking component is perpendicular to the conveying direction of the cans. The conveying direction of the cans is the direction in which the can conveying mechanism drives the cans to move. The cans at the front end are blocked by the can blocking component, so that multiple cans are placed close together in the middle of the sorting platform.

[0007] The material handling platform is equipped with rotatable support plates on both sides. The support plates can rotate back and forth under the drive of the first drive mechanism. After the support plates rotate downwards to the position, they form the discharge port.

[0008] A first pushing component is provided on the material handling platform. Driven by the second driving mechanism, the first pushing component moves back and forth along the horizontal and perpendicular conveying direction of the cans. The first pushing component can push multiple cans onto the material receiving plates on both sides of the material handling platform.

[0009] The material support plate is equipped with a first suction cup bracket, which has multiple first suction cups with downward-facing suction nozzles. The first suction cup bracket can move up and down under the drive of the third drive mechanism.

[0010] The packaging box is conveyed to the bottom of the support plate by the packaging box conveying mechanism, and the opening at the top of the packaging box corresponds to the discharge port; multiple first suction cups pick up multiple cans on the support plate and move them downward through the discharge port to load multiple cans into the packaging box; the packaging box with the cans packed is sent out by the packaging box conveying mechanism.

[0011] The box-sealing and folding machine includes a conveying mechanism, on which a folding mechanism and an adhesive tape applicator are sequentially mounted. The conveying mechanism receives the packaging boxes that have been packed with canned goods. After the packaging boxes are conveyed by the conveying mechanism, they are folded by the folding mechanism and then sealed by the adhesive tape applicator.

[0012] In a further improvement, two support plates are provided on both sides of the material handling platform. These two support plates can rotate back and forth in opposite directions under the drive of the first driving mechanism. After each pair of support plates rotates downwards into position, a discharge port is formed. This allows for a smaller size of the support plates, reducing space occupation and resulting in a more compact structure.

[0013] The first driving mechanism includes two first rotating shafts fixedly connected to one side of the material receiving plate, and the two first rotating shafts are pivotally connected to the first frame. The axial directions of the two first rotating shafts are parallel to the conveying direction of the cans. Each of the two first rotating shafts is fixedly connected to a first cylindrical gear. A first cylinder is mounted on the first frame. The first cylinder simultaneously drives two first racks to move up and down, and the two first racks mesh with the two first cylindrical gears respectively. After the two material receiving plates rotate downwards to their positions, they can prevent the two upper cover plates of the packaging box from moving towards the middle. This allows the two material receiving plates to rotate synchronously and avoids the cans from being affected by the packaging box cover plates bending towards the middle, thus further improving the reliability of the packing operation.

[0014] Both sides of the first frame below the material handling platform are equipped with lever mechanisms. Each lever mechanism includes two parallel second rotating shafts pivotally connected to the first frame. The axis of each second rotating shaft is perpendicular to the conveying direction of the cans. Each second rotating shaft is fixedly connected to a lever and a second cylindrical gear. A second cylinder is mounted on the first frame. The second cylinder simultaneously drives two second racks to move up and down. The two second racks mesh with the two second cylindrical gears respectively, thereby driving the two second rotating shafts to rotate in opposite directions. When the two levers rotate downwards, they can respectively actuate one of the cover plates on the packaging box and prevent the two cover plates from bending towards the middle. This prevents the cover plates of the packaging box from bending towards the middle and affecting the loading of the cans into the packaging box, thus improving the reliability of the packing operation.

[0015] Further improvements include a guard plate on the feeding platform, which is fixedly connected to the first frame and parallel to the feeding platform. The distance between the guard plate and the feeding platform is greater than the height of the can. The guard plate prevents the can from detaching from the feeding platform. A first clearance hole is provided on the first pushing member, through which the guard plate passes. This guard plate prevents the can from detaching from the feeding platform, further improving packing reliability and ensuring continuous operation of the equipment.

[0016] Two positioning cylinders are also installed at intervals below the material handling platform. Each positioning cylinder drives a positioning component to move up and down. The positioning component has a positioning part parallel to the input direction of the cans. The material handling platform has two elongated through holes corresponding to the two positioning components. When the positioning component moves upward, the positioning part passes through one of the elongated through holes and protrudes upward from the top of the material handling platform to initially position one side of multiple cans. When the positioning component moves downward, the upper end of the positioning part is level with or lower than the upper surface of the material handling platform. In this way, the positioning part of the positioning component initially positions multiple cans, which facilitates the subsequent pushing of multiple rows of cans into the receiving plate by the first pusher. This avoids the need for the first and second rows of cans to be pushed a long distance, reduces the total moving distance of the first pusher, further saves the time required for the process, and effectively improves the packing efficiency.

[0017] A calibration plate is provided below the first suction cup bracket, and the calibration plate is fixedly connected to the first suction cup bracket. The calibration plate has multiple second clearance through holes, each allowing a portion of the first suction cup to pass through. The first suction cup nozzle is located below the calibration plate. When multiple first suction cups simultaneously pick up multiple cans, the lower end face of the calibration plate simultaneously contacts the upper ends of multiple cans. This not only ensures that multiple cans are packed flat but also better protects the cans and the first suction cups.

[0018] Further improvements include can positioning mechanisms on both sides of the material handling platform, which position multiple cans before they are picked up by multiple suction cups; a packaging box positioning mechanism is also provided below the material receiving plate, which positions the packaging box so that the opening at the top of the packaging box corresponds to the discharge port.

[0019] Each of the can positioning mechanisms includes a first limiting rod and a second limiting rod disposed on the feeding platform. The first limiting rod is parallel to the conveying direction of the can, and the second limiting rod is perpendicular to the conveying direction of the can. The first limiting rod, the second limiting rod, the can blocking component, and the feeding plate together position multiple cans.

[0020] The packaging box positioning mechanism includes a third limiting rod, a fourth limiting rod, a push plate, and multiple second suction cups. The third limiting rod is perpendicular to the can conveying direction, and the fourth limiting rod is parallel to the can conveying direction. The push plate, driven by the third cylinder, drives one side of the packaging box to move towards the third limiting rod. The multiple second suction cups are mounted on a second suction cup bracket. The second suction cup bracket, driven by the fourth cylinder, moves back and forth in a direction perpendicular to the can input direction. The multiple second suction cups hold the other side of the packaging box, causing the other side of the packaging box to move towards the fourth limiting rod.

[0021] The can conveying mechanism includes a first belt conveyor with two parallel guide rods on it. The two guide rods guide the movement of the cans, and a guard rod is provided between the two guide rods to prevent the cans from jumping off the first belt conveyor.

[0022] The packaging box conveying mechanism includes a second belt conveyor, a third belt conveyor, and a fourth belt conveyor. The second belt conveyor is located below the first belt conveyor. The second, third, and fourth belt conveyors are arranged in parallel to each other. The third and fourth belt conveyors are located below the material support plates on both sides of the material handling platform.

[0023] A second pushing member is provided on the second belt conveyor. Driven by the fourth driving mechanism, the second pushing member moves back and forth along the horizontal and perpendicular conveying direction of the cans. When the second pushing member moves to one side, it pushes a package onto the third belt conveyor. When the second pushing member moves to the other side, it pushes a package onto the fourth belt conveyor. A transition plate is provided between the second belt conveyor and the third belt conveyor to allow the package to move. A limit rod is provided on the second pushing member perpendicular to the can input direction, and the limit rod restricts the movement of the package along the conveying direction.

[0024] The output ends of the third and fourth belt conveyors are connected to the first roller conveyor. The output end of the first roller conveyor is connected to the fifth belt conveyor at its middle section. A third pushing member is mounted on one side of the first roller conveyor. Driven by a fifth driving mechanism, the third pushing member moves back and forth horizontally and perpendicular to the can conveying direction, pushing the packaging boxes delivered from the third belt conveyor to the first roller conveyor to its middle section. A fourth pushing member is mounted on the other side of the first roller conveyor. Driven by a sixth driving mechanism, the fourth pushing member moves back and forth horizontally and perpendicular to the can conveying direction, pushing the packaging boxes delivered from the fourth belt conveyor to the first roller conveyor to its middle section. The first roller conveyor then pushes the packaging boxes to the fifth belt conveyor, which then delivers them out. This structure improves the reliability of cans entering the sorting platform and also increases the conveying efficiency of the packaging boxes.

[0025] In a further improvement, a can conveying and reversing device is connected to the front of the can conveying mechanism. The can conveying and reversing device includes a sixth belt conveyor and a seventh belt conveyor. A turntable mechanism is provided between the sixth belt conveyor and the seventh belt conveyor. The turntable mechanism includes a second frame and a turntable. An end face is provided on the second frame. A central shaft is fixed to the turntable. The central shaft is pivotally connected to the second frame through a one-way bearing. The turntable is parallel to the end face on the second frame. Multiple slots are evenly provided on the outer periphery of the turntable. Each slot has the same structure and size. Each slot has two sides that contact the can. The included angle between the two sides is 90°.

[0026] The belt drive end faces of the sixth belt conveyor and the seventh belt conveyor are flush with the end face of the second frame; the second frame is also provided with a first limiting member with an inwardly concave arc limiting surface, the first limiting member being located near the turntable; both the sixth belt conveyor and the seventh belt conveyor are provided with guide rods to guide the movement of the cans.

[0027] The sixth belt conveyor feeds the cans into the slots, and the driving force of the sixth belt conveyor, transmitted by the cans, drives the turntable to rotate. The turntable then rotates the cans and reverses direction, pushing them onto the seventh belt conveyor. During the can reversal process, the concave arc-shaped limiting surface prevents the cans from detaching from the slots. This can conveying and reversing device prevents the turntable from jamming due to inconsistent rhythm during transmission, effectively improving the reliability of the operation. In addition, as long as the conveying speeds of the sixth and seventh belt conveyors are kept basically the same, the entire device is relatively simple to control. Furthermore, during the reversal process, the two sides of the slot do not need to move relative to the two sides of the can, thus avoiding relative friction and better protecting the appearance of the cans.

[0028] Preferably, the outer periphery of the turntable is provided with 12 evenly distributed slots; the central axis of the concave arc limiting surface overlaps with the central axis of the turntable;

[0029] The belt drive end face of the sixth belt conveyor, the belt drive end face of the seventh belt conveyor, and the end face of the second frame are horizontally arranged, and the sixth belt conveyor and the seventh belt conveyor are parallel to each other and staggered.

[0030] A second limiting member is provided at the input end of the seventh belt conveyor. The limiting part of the second limiting member is arranged perpendicular to the conveying direction of the cans, and the lower side of the limiting part restricts the cans from detaching from the seventh belt conveyor. This is to prevent the cans from detaching from the seventh belt conveyor.

[0031] The canned goods are rectangular. A screening guide is provided between the output end of the seventh belt conveyor and the input end of the can conveying mechanism. The screening guide has a U-shaped guide groove. The distance between the two inner guide surfaces of the U-shaped guide groove is greater than the length of the can. A rectangular screening hole is provided on the bottom surface of the U-shaped guide groove. The two inner long sides of the rectangular screening hole are parallel to the two inner sides of the U-shaped guide groove. The distance between the two inner long sides of the rectangular screening hole is greater than the width of the can but less than the length of the can. In this way, cans with incorrect orientation will fall through the rectangular screening hole and be screened out, ensuring that the output cans are in the correct orientation, which facilitates the packing in subsequent processes.

[0032] Furthermore, the can conveying and reversing device is connected to a can coding mechanism. The coding mechanism includes an eighth belt conveyor connected to the sixth belt conveyor. The upper surface of the can is provided with a handle for opening the can. The eighth belt conveyor conveys the coded can to the sixth belt conveyor.

[0033] The eighth belt conveyor is equipped with a camera, a first spraying terminal, and a second spraying terminal. The camera, the first spraying terminal, and the second spraying terminal are all electrically connected to the controller. The camera sends a signal to the controller by identifying the position of the handle on the can. The controller then controls the first or second spraying terminal to spray code, so that the spraying position on the upper surface of different cans is consistent.

[0034] Further improvements include a paper-filling device between the can packing machine and the lid-sealing machine for adding padding paper to the packaging boxes. This padding paper filling device includes a third frame with a padding paper placement area for holding a stack of padding paper. A third suction cup bracket is mounted on the padding paper placement area, and a third suction cup is attached to the bracket. The third suction cup bracket is driven up and down by a seventh drive mechanism. Inclined or curved pads are provided on opposite sides of the padding paper placement area. These two inclined or curved pads support the front and rear of the stack of padding paper, causing the front and rear of the stack to tilt upwards, while the middle of the stack is supported on the padding paper placement area. The third suction cup bracket drives the third suction cup downwards to its designated position and then sucks up the topmost padding paper from the stack.

[0035] The seventh drive mechanism is connected to a slider, which is driven by the eighth drive mechanism to move back and forth horizontally;

[0036] A second roller conveyor and a packaging box positioning mechanism are installed on one side of the third frame. The second roller conveyor includes multiple spaced and parallel horizontally arranged rollers, which can rotate in the same direction under the drive of a motor and a transmission mechanism. The packaging box positioning mechanism includes two parallel guide rods and a stop block. The two parallel guide rods are set on the rollers, and the stop block is driven by a fifth cylinder to move up and down through the gap between two adjacent rollers. When the stop block moves upward, the stop block, the two parallel guide rods, and the multiple rollers position the packaging box with the opening of the packaging box facing upward. After the packaging box is positioned by the packaging box positioning mechanism, the third suction cup drives the padding paper to be placed inside the packaging box. When the stop block moves downward to make room, the packaging box can move horizontally under the drive of the multiple rollers and the guidance of the two guide rods.

[0037] The input end of the second roller conveyor connects to the output end of the packaging box conveying mechanism, and the output end of the second roller conveyor connects to the input end of the conveying mechanism on the folding and sealing machine. Because the front and rear of the stack of padding paper curl upwards, tension is generated between the padding papers. This tension overcomes the sticking of the padding papers caused by suction, effectively preventing the suction of multiple padding papers at once, avoiding waste, and ensuring that only one padding paper is suctioned at a time. This allows the equipment to operate automatically with high reliability and better meets the process requirements for inserting padding paper into packaging boxes.

[0038] Furthermore, the seventh driving mechanism includes a sixth cylinder, and a distance detection sensor is also mounted on the third suction cup bracket. The distance detection sensor is electrically connected to the controller. The third suction cup is a non-contact vacuum suction cup. During the downward movement of the third suction cup bracket, after the distance detection sensor detects that the distance between the third suction cup and the padding paper has reached a set parameter, the distance detection sensor sends a signal to the controller. The controller then controls the sixth cylinder to stop operating via a solenoid valve, allowing the third suction cup to pick up the padding paper without direct contact. This allows for the pick-up of the padding paper without direct contact, better control of the suction force, and further prevention of picking up multiple padding papers at once, avoiding waste and better meeting process requirements.

[0039] A horizontally mounted turntable is pivotally connected to the third frame. The turntable is driven by a ninth drive mechanism to rotate intermittently or reciprocate intermittently. Two padding paper placement areas are located on the upper surface of the turntable, symmetrically arranged with respect to the central axis of the turntable. Each padding paper placement area has inclined or curved pads on opposite sides. Multiple vertical limiting rods are connected around each padding paper placement area of ​​the turntable, restricting the horizontal movement of the entire stack of padding paper. After the padding paper in one placement area is removed, the turntable rotation allows padding paper from the other placement area to enter the working position, reducing preparation time and further improving work efficiency.

[0040] Furthermore, a rotating shaft is fixedly connected to the lower part of the turntable, and the rotating shaft is pivotally connected to the third frame. The ninth drive mechanism includes a seventh cylinder, a rack and a gear. The gear is fixedly connected to the rotating shaft, the rack is fixedly connected to the piston rod of the seventh cylinder, and the housing of the seventh cylinder is fixedly connected to the third frame. The rack and the gear mesh with each other and then drive the turntable to rotate back and forth intermittently through the seventh cylinder.

[0041] The turntable is provided with a through hole for each padding paper placement area. Two sensor probes are installed under the turntable. Both sensor probes are connected to the controller. Each sensor probe detects whether there is still padding paper in the padding paper placement area through one of the through holes, so that the controller can control the ninth drive mechanism to drive the turntable to change position in time.

[0042] A first support frame is installed on the side of the second roller conveyor. A detection sensor is installed on the first support frame. The detection sensor is located above the roller and is connected to a controller. When the detection sensor detects that a package is moving along the roller, the controller controls the fifth cylinder to move, causing the stop block to move up and block the package.

[0043] The eighth drive mechanism includes an eighth cylinder. A second support frame is provided on the upper part of the third frame. A guide rail is provided on the second support frame to cooperate with the slider. The housing of the eighth cylinder is fixed to the second support frame, and the piston rod of the eighth cylinder is connected to the slider.

[0044] The first pushing component of this canned food packing machine can push multiple cans onto a receiving plate on one side of the sorting platform by moving back and forth according to process requirements. Simultaneously, a first suction cup bracket is provided on the receiving plate, with multiple suction cups facing downwards. The first suction cup bracket can move up and down under the drive of a third driving mechanism. While the first pushing component pushes multiple cans onto the receiving plate on one side of the sorting platform, multiple first suction cups on the other side can pick up multiple cans on the receiving plate and move them downwards through the discharge port to pack them into the packaging box. Material preparation and packing can be carried out simultaneously, effectively saving time and facilitating multi-layer packing of cans, resulting in high packing efficiency. Furthermore, this packing structure offers high reliability throughout the packing process, and the overall structure is relatively compact.

[0045] Secondly, the packed boxes can be folded and sealed with tape by a box-sealing machine, which can automatically complete the boxing and sealing of canned goods, with a high degree of automation.

[0046] This utility model can not only pack and seal square canned goods, but also pack and seal similar materials. Attached Figure Description

[0047] Figure 1 This is a perspective view of the utility model;

[0048] Figure 2 This is a top-view perspective view of the canning machine of this utility model;

[0049] Figure 3 This is a top-view perspective view of the first frame of the hidden part of the canning machine of this utility model;

[0050] Figure 4 Is Figure 3 A top-down 3D view that hides part of the first frame and some components;

[0051] Figure 5 yes Figure 4 Enlarged view of point A;

[0052] Figure 6 Is Figure 4 On top of that, a 3D view of the packaging box from below is hidden;

[0053] Figure 7 yes Figure 6 Enlarged view of point B;

[0054] Figure 8 Is Figure 3 A top-down 3D view from another angle, concealing part of the first frame and some components;

[0055] Figure 9This is a top-view perspective view of the canning and reversing device and the coding mechanism of this utility model.

[0056] Figure 10 This is a top view of the conveying and reversing device and coding mechanism for canned goods of this utility model;

[0057] Figure 11 This is a top-view perspective view of the conveying and reversing device and the hidden cover of the coding mechanism for canned goods of this utility model.

[0058] Figure 12 yes Figure 11 Enlarged view of point C;

[0059] Figure 13 This is a bottom-view perspective view of the conveying and reversing device and the coding mechanism for canned goods of this utility model.

[0060] Figure 14 This is a top perspective view of the paper loading device for loading padding paper into packaging boxes according to this utility model;

[0061] Figure 15 This is a top-view perspective view of the paper-loading device for inserting padding paper into packaging boxes, which is another angle of this utility model.

[0062] Figure 16 yes Figure 15 Enlarged view of point D;

[0063] Figure 17 This is a bottom perspective view of the paper-loading device for inserting padding paper into packaging boxes according to this utility model. Detailed Implementation

[0064] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0065] Figures 1 to 17 As shown, a boxing and packaging production line for square canned goods includes a can packing machine 100 and a lid-folding and sealing machine 200; further combined with Figure 1 , Figures 2 to 8 As further shown, the canning machine 100 includes a first frame 1, a can conveying mechanism 2, and a carton conveying mechanism 3. The cans 10 are generally rectangular. A sorting platform 4 is provided in the middle of the first frame 1. The cans 10 move horizontally into the sorting platform 4 under the drive of the can conveying mechanism 2. A can blocking member 21 is provided on the top of the sorting platform 4. The can blocking member 21 is fixedly connected to the first frame 1. The blocking surface of the can blocking member 21 is perpendicular to the conveying direction of the cans 10. The conveying direction of the cans 10 is the conveying direction in which the can conveying mechanism 2 drives the cans 10 to move. Figure 1 , Figure 2Arrow e indicates the direction; the cans 10 at the foremost position are blocked by the can blocking member 21, so that multiple cans 10 are placed close together in the middle of the material handling platform 4.

[0066] The material handling platform 4 has two rotatable material support plates 41 on both sides. The two material support plates 41 can rotate back and forth in opposite directions under the drive of the first drive mechanism 5. After each pair of material support plates 41 rotates downward into position, a discharge port 42 is formed. The first drive mechanism 5 includes two first rotating shafts 51 that are fixed to one side of the lower part of the material support plate 41. The two first rotating shafts 51 are pivotally connected to the first frame 1. The axial direction of the two first rotating shafts 51 is parallel to the conveying direction of the can 10. Each of the two first rotating shafts 51 is fixed to a first cylindrical gear 52. The first frame 1 is equipped with a first cylinder 53. The first cylinder 53 drives two first racks 54 to move up and down at the same time. The two first racks 54 mesh with the two first cylindrical gears 52 respectively. After the two material support plates 41 rotate downward into position, the two cover plates 201 on the upper part of the packaging box 20 are restricted to bend and move closer to the middle. The packaging box 20 is a common rectangular shape, and the upper part of the packaging box 20 has 4 bendable cover plates 201.

[0067] A first pushing member 43 is provided on the material handling platform 4. The first pushing member 43 moves back and forth along the horizontal and perpendicular conveying direction of the cans 10 under the drive of the second driving mechanism 44. When the first pushing member 43 moves to one side, it can push multiple cans 10 onto the receiving plate 41 on one side of the material handling platform 4. When the first pushing member 43 moves to the other side, it can push multiple cans 10 onto the receiving plate 41 on the other side of the material handling platform 4. The second driving mechanism 44 includes a servo motor and a transmission mechanism. The servo motor drives the first pushing member 43 to move back and forth along the horizontal and perpendicular conveying direction of the cans 10 through the transmission mechanism.

[0068] Each pair of material support plates 41 is provided with a first suction cup bracket 6, which is equipped with ten first suction cups 61 with their nozzles facing downwards. The first suction cup bracket 6 can move up and down under the drive of the third drive mechanism 62. The packaging box 20 is delivered to the bottom of the material support plate 41 under the drive of the packaging box conveying mechanism 3. The upper opening of the packaging box 20 corresponds to the discharge port 42. The ten first suction cups 61 suck up the ten cans 10 on the material support plate 41 and move downwards through the discharge port 42 to put the ten cans 10 into the packaging box 20. The third drive mechanism 62 includes a servo motor and a transmission mechanism. The servo motor drives the first suction cup bracket 6 to move up and down through the transmission mechanism.

[0069] By moving the first suction cup bracket 6 up and down multiple times, multiple layers of canned food 10 can be loaded into the packaging box 20.

[0070] A calibration plate 63 is provided below the first suction cup bracket 6, and the calibration plate 63 is fixedly connected to the first suction cup bracket 6. The calibration plate 63 has ten second clearance through holes 64, each allowing a portion of a first suction cup 61 to pass through. The nozzle of the first suction cup 61 is located below the calibration plate 63. When multiple first suction cups 61 simultaneously pick up ten cans 10, the lower end face of the calibration plate 63 simultaneously contacts the upper ends of the ten cans 10. This not only ensures that the multiple cans 10 are flat when packed, but also better protects the cans 10 and the first suction cups 61.

[0071] Both sides of the first frame 1 below the material handling platform 4 are equipped with lever mechanisms 40. Each lever mechanism 40 includes two parallel second rotating shafts 45 pivotally connected to the first frame 1. The axial direction of each second rotating shaft 45 is perpendicular to the conveying direction of the can 10. Each second rotating shaft 45 is fixed with a lever 46. The ends of the two second rotating shafts 45 are respectively fixed with a second cylindrical gear 47. The first frame 1 is equipped with a second cylinder 48. The second cylinder 48 simultaneously drives two second racks 49 to move up and down. The two second racks 49 mesh with the two second cylindrical gears 47 respectively, thereby driving the two second rotating shafts 45 to rotate in opposite directions. When the two levers 46 rotate downward, they can respectively move a cover plate 201 on the packaging box 20 and restrict the two cover plates 201 to bend and move closer to the middle.

[0072] Both sides of the material handling platform 4 are equipped with can positioning mechanisms 7, and multiple cans 10 are positioned by the can positioning mechanisms 7; a packaging box positioning mechanism 8 is also provided under the material receiving plate 41, and the packaging box 20 is positioned by the packaging box positioning mechanism 8 so that the upper opening of the packaging box 20 corresponds to the discharge port 42.

[0073] Each of the can positioning mechanisms 7 includes a first limiting rod 71 and a second limiting rod 72 disposed on the feeding platform 4. The first limiting rod 71 is parallel to the conveying direction of the can 10, and the second limiting rod 72 is perpendicular to the conveying direction of the can 10. The first limiting rod 71, the second limiting rod 72, the can blocking member 21 and the supporting plate 41 together position multiple cans 10.

[0074] The packaging box positioning mechanism 8 includes a third limiting rod 81, a fourth limiting rod 82, a push plate 83, and two second suction cups 84. The third limiting rod 81 is perpendicular to the conveying direction of the can 10, and the fourth limiting rod 82 is parallel to the conveying direction of the can 10. The push plate 83, driven by the third cylinder 85, drives one side of the packaging box 20 to move towards the third limiting rod 81. The two second suction cups 84 are mounted on a second suction cup bracket 86. The second suction cup bracket 86, driven by the fourth cylinder 87, moves back and forth in a direction perpendicular to the input direction of the can 10. The two second suction cups 84 suck up the other side of the packaging box 20, causing the other side of the packaging box 20 to move towards the fourth limiting rod 82.

[0075] The feeding platform 4 is equipped with a guard plate 11, which is fixedly connected to the first frame 1. The guard plate 11 is parallel to the feeding platform 4, and the distance between the guard plate 11 and the feeding platform 4 is greater than the height of the can 10. The guard plate 11 is used to prevent the can 10 from falling off the feeding platform 4. The first pusher 43 is provided with a first clearance through hole 431, through which the guard plate 11 passes. The guard plate 11 is also provided with multiple observation and maintenance through holes 111 to facilitate observation of the displacement of the can 10 and to facilitate maintenance in case of abnormalities.

[0076] Two positioning cylinders 12 are installed at intervals under the material handling platform 4. The housing of the positioning cylinder 12 can be fixedly connected to the first frame 1. Each positioning cylinder 12 drives a positioning component 13 to move up and down. The positioning component 13 is provided with a positioning part 131 parallel to the input direction of the cans 10. The material handling platform is provided with two elongated through holes 14 corresponding to the two positioning components 13. When the positioning component 13 moves upward, the positioning part 131 passes through one of the elongated through holes 14 and protrudes upward from the top of the material handling platform 4 to perform initial positioning on one side of the multiple cans 10. When the positioning component 13 moves downward, the upper end of the positioning part 131 is level with or lower than the upper end surface of the material handling platform 4. In this way, the positioning part 131 initially positions multiple cans 10, which makes it easier for the first pusher 43 to subsequently push multiple rows of cans 10 onto the receiving plate 41. This avoids the need for the first row of cans 10 and the second row of cans 10 to be pushed a long distance, reduces the total moving distance of the first pusher 43, further saves the time required for the process, and improves the packing efficiency.

[0077] The can conveying mechanism 2 includes a first belt conveyor. Two parallel guide rods 22 are provided on the first belt conveyor outside the first frame 1. The two guide rods 22 guide the movement of the cans 10. A guard rod 23 is provided between the two guide rods 22 to prevent the cans 10 from jumping off the first belt conveyor.

[0078] The packaging box conveying mechanism 3 includes a second belt conveyor 31, a third belt conveyor 32 and a fourth belt conveyor 33. The second belt conveyor 31 is located below the first belt conveyor. The second belt conveyor 31, the third belt conveyor 32 and the fourth belt conveyor 33 are arranged in parallel to each other. The third belt conveyor 32 and the fourth belt conveyor 33 are respectively located below the material support plates 41 on both sides of the material handling platform 4.

[0079] A second pushing member 34 is provided on the second belt conveyor 31. The second pushing member 34 moves back and forth along the horizontal and perpendicular conveying direction of the can 10 under the drive of the fourth driving mechanism 35. When the second pushing member 34 moves to one side, it pushes a package 20 onto the third belt conveyor 32. When the second pushing member 34 moves to the other side, it pushes a package 20 onto the fourth belt conveyor 33. A transition plate 36 is provided between the second belt conveyor 31 and the third belt conveyor 32 to allow the package 20 to move. A transition plate 36 is provided between the second belt conveyor 31 and the fourth belt conveyor 33 to allow the package 20 to move. The second pushing member 34 is provided with a limiting rod perpendicular to the input direction of the can 10. The limiting rod can be designed as an integral part of the third limiting rod 81. The limiting rod restricts the movement of the package 20 along the conveying direction. Preferably, the fourth driving mechanism 35 is a cylinder.

[0080] The output ends of the third belt conveyor 32 and the fourth belt conveyor 33 are connected to the first roller conveyor 9. The output end of the first roller conveyor 9 is connected to the fifth belt conveyor 91. A third pusher 92 is provided on one side of the first roller conveyor 9. The third pusher 92 moves back and forth along the horizontal and perpendicular conveying direction of the cans 10 under the drive of the fifth drive mechanism 93. The third pusher 92 pushes the packaging box 20 delivered from the third belt conveyor 32 to the middle of the first roller conveyor 9. A fourth pusher 94 is provided on the other side of the first roller conveyor 9. The fourth pusher 94 moves back and forth along the horizontal and perpendicular conveying direction of the cans 10 under the drive of the sixth drive mechanism 95. The fourth pusher 94 pushes the packaging box 20 delivered from the fourth belt conveyor 33 to the middle of the first roller conveyor 9. The first roller conveyor 9 then pushes the packaging box 20 onto the fifth belt conveyor 91. Both the fifth drive mechanism 93 and the sixth drive mechanism 95 are cylinders.

[0081] The first roller conveyor 9 may also be equipped with blocking brackets 96 on both sides of the front side. The blocking brackets 96 block the packaging box 10 to prevent the packaging box 10 from falling out of the output end of the first roller conveyor 9.

[0082] Further integration Figure 1 , Figures 9 to 13 As shown, a can conveying and reversing device 300 is connected to the front of the can conveying mechanism 2, and a can inkjet printing mechanism 400 is also connected to the front of the can conveying and reversing device 300.

[0083] The can conveying and reversing device 300 includes a sixth belt conveyor 1a and a seventh belt conveyor 2a. A turntable mechanism 3a is provided between the sixth belt conveyor 1a and the seventh belt conveyor 2a. The turntable mechanism 3a includes a second frame 4a and a turntable 5a. An end face 41a is provided on the second frame 4a. A central shaft 51a is fixedly connected to the turntable 5a. The central shaft 51a is pivotally connected to the second frame 4a through a one-way bearing 52a. The turntable 5a is parallel to the end face 41a on the second frame 4a. Twelve slots 53a are evenly distributed on the outer periphery of the turntable 5a. Each slot 53a has the same structure and size. Each slot 53a has two sides 54a that contact the can 10. The included angle between the two sides 54a is 90°.

[0084] The belt drive end faces of the sixth belt conveyor 1a and the seventh belt conveyor 2a are flush with the end face 41a of the second frame 4a; furthermore, the belt drive end faces of the sixth belt conveyor 1a, the seventh belt conveyor 2a and the end face 41a of the second frame 4a are horizontally arranged.

[0085] The second frame 4a is also provided with a first limiting member 6a having a concave arc limiting surface 61a. The first limiting member 6a is a plate-shaped body and is located close to the turntable 5a. The central axis 51a of the concave arc limiting surface 61a overlaps with the central axis 51a of the turntable 5a. The sixth belt conveyor 1a and the seventh belt conveyor 2a are each provided with two guide rods 7a. The two guide rods 7a are parallel to the conveying direction of the can 10 and are used to guide the movement of the can 10.

[0086] The sixth belt conveyor 1a feeds the can 10 into the slot 53a and drives the turntable 5a to rotate by the driving force of the sixth belt conveyor 1a transmitted by the can 10. The turntable 5a drives the can 10 to rotate and change direction before pushing the can 10 onto the seventh belt conveyor 2a. During the turning process of the can 10, the concave arc limiting surface 61a restricts the can 10 from leaving the slot 53a.

[0087] A stop bar 8a is provided on the sixth belt conveyor 1a. The stop bar 8a is arranged along the conveying direction of the can 10 and restricts the can 10 from leaving the sixth belt conveyor 1a.

[0088] A second limiting member 21a is provided at the input end of the seventh belt conveyor 2a. The limiting part 22a of the second limiting member 21a is arranged along the conveying direction perpendicular to the can 10. The lower side of the limiting part 22a restricts the can 10 from leaving the seventh belt conveyor 2a.

[0089] The second limiting member 21a can be adjusted in position along the conveying direction of the can 10; the sixth belt conveyor 1a and the seventh belt conveyor 2a are parallel to each other and staggered.

[0090] A cover plate 42a is fixed on the second frame 4a, covering part of the turntable 5a to improve safety during use.

[0091] A screening guide 9a is provided between the output end of the seventh belt conveyor 2a and the input end of the can conveying mechanism 2. The screening guide 9a has a U-shaped guide groove 91a. The distance between the two inner guide surfaces of the U-shaped guide groove 91a is greater than the length dimension of the can 10. A rectangular screening through-hole 92a is provided on the bottom surface of the U-shaped guide groove 91a. The two inner long sides of the rectangular screening through-hole 92a are parallel to the two inner sides of the U-shaped guide groove 91a. The distance between the two inner long sides of the rectangular screening through-hole 92a is greater than the width dimension of the can 10 but less than the length dimension of the can 10. Thus, if the can 10 fails to turn successfully or is misaligned, it will fall through the rectangular screening through-hole 92a and be screened out. Cans 10 in the correct orientation can pass smoothly through the U-shaped guide groove 91a, ensuring that the cans 10 are output in the correct direction and guaranteeing smooth packing in subsequent processes.

[0092] The coding mechanism 400 of the can includes an eighth belt conveyor 201a connected to the sixth belt conveyor 1a. The upper surface of the can 10 is provided with a handle 101 for opening the can. The eighth belt conveyor 201a conveys the coding can 10 to the sixth belt conveyor 1a.

[0093] The eighth belt conveyor 201a is equipped with a camera 202a, a first spray terminal 203a, and a second spray terminal 204a. The camera 202a, the first spray terminal 203a, and the second spray terminal 204a are all electrically connected to the controller. The camera 202a sends a signal to the controller by identifying the position of the handle 101 on the can 10. Then the controller controls the first spray terminal 203a or the second spray terminal 204a to spray code, so that the spray code position on the upper surface 41a of different cans 10 is consistent.

[0094] As a variation, the sixth belt conveyor 1a and the eighth belt conveyor 201a can be integrated into one unit. The stop bar 8a can extend to the top of the eighth belt conveyor 201a. The eighth belt conveyor 201a is provided with two guide rods 7a parallel to the conveying direction of the can 10 for guiding the movement of the can 10.

[0095] The sixth belt conveyor 1a is also equipped with a photoelectric probe 11a, which is electrically connected to a controller to determine whether there are still cans 10 passing on the sixth belt conveyor 1a.

[0096] Further integration Figure 1 , Figures 14 to 17As shown, a paper loading device 500 for loading padding paper into the packaging box is also provided between the can packing machine 100 and the lid sealing machine 200.

[0097] The paper loading device 500 for loading padding paper into packaging boxes includes a third frame 1b. The third frame 1b has a padding paper placement area 2b capable of holding a stack of padding paper 10b. A third suction cup bracket 3b is mounted on the padding paper placement area 2b, and a third suction cup 31b is mounted on the third suction cup bracket 3b. The third suction cup bracket 3b is driven up and down by a seventh drive mechanism. Furthermore, a horizontally arranged turntable 4b is pivotally connected to the third frame 1b. The turntable 4b is driven by a ninth drive mechanism to rotate intermittently or intermittently back and forth. Two padding paper placement devices are located on the upper surface of the turntable 4b. In section 2b, two padding paper placement areas 2b are symmetrically arranged with respect to the central axis of a turntable 4b. Each padding paper placement area 2b has an inclined pad 21b on both sides. The pad 21b can also be arc-shaped. The two inclined pads 21b support the front and rear of the stack of padding paper 10b respectively, causing the front and rear of the stack of padding paper 10b to tilt upwards. The middle of the stack of padding paper 10b is supported on the padding paper placement area 2b. The third suction cup bracket 3b drives the third suction cup 31b to move downwards and into place to pick up the top padding paper of the stack of padding paper 10b.

[0098] The seventh drive mechanism includes a sixth cylinder 32b. A distance detection sensor 33b is also mounted on the third suction cup bracket 3b, which is electrically connected to a controller. The third suction cup 31b is a non-contact vacuum suction cup. During the downward movement of the third suction cup bracket 3b, after the distance detection sensor 33b detects that the distance between the third suction cup 31b and the pad paper 10b has reached a set parameter, the distance detection sensor 33b sends a signal to the controller. The controller then controls the sixth cylinder 32b to stop operating via a solenoid valve 34b, allowing the third suction cup 31b to pick up the pad paper 10b without directly contacting it. This further prevents the picking up of multiple pad papers at once, avoiding waste.

[0099] The turntable 4b is connected to multiple vertical limiting rods 41b around each pad paper placement area 2b, and the multiple vertical limiting rods 41b restrict the entire stack of pad paper 10b from shifting in the horizontal direction.

[0100] Each of the vertical limiting rods 41b is movable and adjustable, and the upper end of each vertical limiting rod 41b is bent outward; the distance between the two inclined pads 21b on opposite sides of the pad paper placement area 2b is adjustable to accommodate pad papers 10b of different specifications, thereby improving the versatility of the equipment.

[0101] A rotating shaft 42b is fixedly connected to the lower part of the turntable 4b. The rotating shaft 42b is pivotally connected to the third frame 1b. The ninth drive mechanism includes a seventh cylinder 43b, a rack 44b, and a gear 45b. The gear 45b can be a cylindrical gear. The gear 45b is fixedly connected to the rotating shaft 42b. The rack 44b is fixedly connected to the piston rod of the seventh cylinder 43b. The housing of the seventh cylinder 43b is fixedly connected to the third frame 1b. The rack 44b and the gear 45b mesh with each other and then drive the turntable 4b to rotate back and forth intermittently through the seventh cylinder 43b.

[0102] Each turntable 4b has a through hole 46 corresponding to each pad paper placement area 2b. Two sensor probes 47b are installed under the turntable 4b. Both sensor probes 47b are connected to the controller. Each sensor probe 47b detects whether there is still pad paper 10b in the pad paper placement area 2b through one of the through holes 46b, so that the controller can control the ninth drive mechanism to drive the turntable 4b to change position in a timely manner.

[0103] The seventh drive mechanism is connected to a slider 5b, that is, the housing of the sixth cylinder 32b is fixed to the slider 5b. The slider 5b is driven by the eighth drive mechanism to move back and forth in the horizontal direction. The eighth drive mechanism includes an eighth cylinder 51b. The upper part of the third frame 1b is provided with a second support frame 52b. The second support frame 52b is provided with a guide rail 53b that cooperates with the slider 5b. The housing of the eighth cylinder 51b is fixed to the second support frame 52b. The piston rod of the eighth cylinder 51b is connected to the slider 5b.

[0104] A second roller conveyor 7b is installed on one side of the third frame 1b. The second roller conveyor 7b is equipped with a packaging box positioning mechanism 6b. The packaging box 20 is positioned in a set position with its opening facing upward by the packaging box positioning mechanism 6b, so that the third suction cup 31b can drive the padding paper 10b to be placed inside the packaging box 20.

[0105] The second roller conveyor 7b includes multiple spaced and parallel horizontally arranged rollers 71b, which can rotate in the same direction under the drive of a motor and a transmission mechanism. The packaging box positioning mechanism 6b includes two parallel guide rods 61b and a stop block 62b. The two parallel guide rods 61b are set on the rollers 71b. The stop block 62b is driven by the fifth cylinder 63b and can move up and down through the gap between two adjacent rollers 71b. When the stop block 62b moves upward, the stop block 62b, the two parallel guide rods 61b and the multiple rollers 71b position the packaging box 20. When the stop block 62b moves downward to make way, the packaging box 20 can move horizontally under the drive of the multiple rollers 71b and the guidance of the two guide rods 61b.

[0106] A first support frame 72b is installed on the side of the second roller conveyor mechanism 7b. A detection sensor 73b is installed on the first support frame 72b. The detection sensor 73b is located above the roller 71b. The detection sensor 73b is connected to the controller. When the detection sensor 73b senses that a package 20 is moving along the roller 71b, the controller controls the fifth cylinder 63b to move, which drives the stop block 62b to move up and block the package 20.

[0107] Multiple third support frames 74b are fixedly connected to both sides of the second roller conveyor mechanism 7b. Each third support frame 74b is equipped with an adjustable support rod 75b. Each guide rod 61b is fixedly connected to at least two support rods 75b. The spacing between two guide rods 61b can be adjusted by adjusting the position of the multiple support rods 75b to accommodate packaging boxes 20 of different sizes.

[0108] A second paper loading device 501 for loading padding paper into packaging boxes is also provided on the third frame 1b, and a second packaging box positioning mechanism 6b is provided on the second roller conveyor mechanism 7b, so that two types of padding paper 10b of different specifications can be loaded into the packaging box 20.

[0109] The folding and sealing machine 200 includes a conveying mechanism 1c for receiving the packaging box 20. A folding mechanism 2c and a tape-applying mechanism 3c are sequentially arranged on the conveying mechanism. The packaging box 20 is conveyed through the conveying mechanism 1c, folded by the folding mechanism 2c, and then sealed by the tape-applying mechanism 3c. The input end of the second roller conveyor 7b is connected to the output end of the fifth belt conveyor 91, and the output end of the second roller conveyor 7b is connected to the input end of the conveying mechanism 1c of the folding and sealing machine 200. The packaged packaging box 20 is sent out through the conveying mechanism 1c.

[0110] The folding and sealing machine 200 can be a product already on the market, such as the folding, sealing and packing integrated machine produced by Suzhou Schoker Automation Equipment Co., Ltd. on the 1688 platform; or you can refer to the high-speed folding and sealing machine described in CN209192308U.

[0111] like Figure 1As shown, the input end of the packaging box conveying mechanism 3 can also be connected to a first packaging box conveying mechanism 600. A packaging box opening machine 700 is connected to the front end of the first packaging box conveying mechanism 600. A paper loading device 800 for inserting padding paper into the bottom of the packaging box is also provided on one side of the first conveying mechanism 600. The packaging box opening machine opens the stack of packaging boxes, applies adhesive paper to the bottom, and then sends them to the first packaging box conveying mechanism 600 for conveying. After passing through the paper loading device 800 to insert padding paper into the bottom of the packaging box, the conveyor continues to move. Finally, the pushing mechanism 601 pushes the packaging box 20 to the input end of the packaging box conveying mechanism 3, which is also the input end of the second belt conveyor 31. In this way, the opening of the packaging box and the insertion of the bottom padding paper can be completed automatically, further improving the level of automation. The first conveying mechanism 600 of the packaging box can be a belt conveyor, the pushing mechanism 601 can be a cylinder to drive the push block to move, the structure of the paper loading device 800 for loading padding paper into the bottom of the packaging box can be basically the same as the paper loading device 500 for loading padding paper into the packaging box mentioned above, and the packaging box opening machine 700 can be a packaging box opening machine that is already sold on the market.

[0112] The output end of the conveying mechanism 1c is also connected to a second conveying mechanism 900 for packaging boxes. The second conveying mechanism 900 for packaging boxes can be a roller conveyor. After the packaging boxes 200 that have been sealed and packaged are conveyed to the set position by the second conveying mechanism 900, the robot 901 drives the robotic arm to grab the packaging boxes 200 and stack them onto the pallet 902. In this way, the unsealed and packaged packaging boxes 200 can be automatically stacked, which is convenient for transportation, further improves the automation level of the transportation process, increases efficiency, and reduces the labor intensity of operators.

[0113] In use, the can 10 is printed by the can printing mechanism 400, and then rotated 90° by the can conveying and reversing device 300 before being sent to the front end of the can conveying mechanism 2, i.e., the input end of the first belt conveyor; after the packaging box unpacking machine 700 opens the packaging box 200, the packaging box 200 is filled with padding paper by the paper filling device 800, and finally pushed to the input end of the packaging box conveying mechanism 3, i.e., the input end of the second belt conveyor 31, by the pushing mechanism 601.

[0114] Then, under the drive of the can conveying mechanism 2, the can 10 moves horizontally into the material handling platform 4. The can 10 at the front end is blocked by the can blocking member 21, so that multiple cans 10 are placed close together in the middle of the material handling platform 4.

[0115] The first pusher 43 moves back and forth along the horizontal and perpendicular conveying direction of the cans 10 under the drive of the second drive mechanism 44. When the first pusher 43 moves to one side, it first pushes five cans 10 to one side of the material handling platform 4 and then obtains initial positioning through the positioning part 131 of the upward-moving positioning member 13. When the first pusher 43 moves to the other side, it pushes five cans 10 to the other side of the material handling platform 4 and obtains initial positioning through the positioning part 131 of the upward-moving positioning member 13 on the other side. Then the first pusher 43 moves back and forth once more. When the first pusher 43 moves to one side again, it pushes two rows of a total of 10 cans 10 onto the two material support plates 41 on one side of the material handling platform 4 (at this time, the positioning part 131 of the positioning member 13 on that side moves downward back to its original position). When the first pusher 43 moves to the other side again, it also pushes two rows of a total of 10 cans 10 onto the two material support plates 41 on the other side of the material handling platform 4 (at this time, the positioning part 131 of the positioning member 13 on the other side moves downward back to its original position).

[0116] When there are ten cans 10 on the two support plates 41 on one side of the material handling platform 4, the first suction cup brackets 6 on the two support plates 41 on that side move downward under the drive of the third drive mechanism 62, and the ten first suction cups 61 suck up the ten cans 10 on the two support plates 41; at the same time, the packaging box 20 is fed in by the second belt conveyor 31, and then the second pusher 34 pushes the packaging box 20 onto the third belt conveyor 32 or the fourth belt conveyor 33, so that the packaging box 20 is under the two support plates 41, and the packaging box 20 can be positioned by the packaging box positioning mechanism 8 so that the upper opening of the packaging box 20 corresponds to the discharge port 42;

[0117] Next, the two second rotating shafts 45 rotate in opposite directions, and the two levers 46 respectively move one of the cover plates 201 on the packaging box 20, restricting the two cover plates 201 from bending and converging towards the middle; then, the two supporting plates 41 rotate downward in opposite directions and move the other two cover plates 201 on the upper part of the packaging box 20, restricting the other two cover plates 201 from bending and converging towards the middle; then, the first suction cup bracket 6 moves downward under the drive of the third drive mechanism 62, and the ten first suction cups 61 put the ten cans 10 into the packaging box, and then the first suction cup bracket 6 moves upward back to its original position; then the two supporting plates 41 return to their original position to receive the next ten cans 10, and after repeating the action, the ten first suction cups 61 put the other ten cans 10 into the packaging box 20 to form a second layer. After completion, the packaging box positioning mechanism 8 releases the positioning of the packaging box 20, which is now filled with multiple layers of cans. The packaging box 20 of the canned goods is sent to the first roller conveyor 9 by the third belt conveyor 32 or the fourth belt conveyor 33. Then, the packaging box 20 is pushed to the middle of the first roller conveyor 9 by the third pusher 92 or the fourth pusher 94. Then, the first roller conveyor 9 pushes the packaging box 20 to the fifth belt conveyor 91. The fifth belt conveyor 91 then transports the packaged packaging box 20 to the second roller conveyor 7b. The packaged packaging box 20 after the canned goods are packed is conveyed by the second roller conveyor 7b and then positioned in the set position with the opening facing upward by the packaging box positioning mechanism 6b. Then, the third suction cup 31b drives a pad paper 10b to be placed inside the packaging box 20 and cover the top of the multiple cans 10. Then, the second set of pad paper loading device 501 can be used to put in the second type of pad paper 10b.

[0118] Packaging boxes 20 with padding paper 10b placed are fed into the conveyor mechanism 1c of the folding and sealing machine 200. After being conveyed by the conveyor mechanism 1c, the boxes 20 are folded by the folding mechanism 2c and then sealed by the adhesive tape applicator 3c. The sealed and packaged boxes 10 are then conveyed by the conveyor mechanism 1c to the second conveyor mechanism 900, and then to a set position. The robot 901 then drives the robotic arm to grab the fully packed and sealed boxes 20 and stack them onto the pallet 902. This forms a continuous production line operation.

[0119] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A boxing and packaging production line for square canned goods, comprising a canning machine and a lid-folding and sealing machine, characterized in that: The canning machine includes a first frame, a can conveying mechanism, and a packaging box conveying mechanism. A sorting platform is provided in the middle of the first frame. The cans move horizontally into the sorting platform under the drive of the can conveying mechanism. A can blocking component is provided on the top of the sorting platform. The can blocking component is fixedly connected to the first frame. The blocking surface of the can blocking component is perpendicular to the conveying direction of the cans. The conveying direction of the cans is the conveying direction in which the can conveying mechanism drives the cans to move. The cans at the front end are blocked by the can blocking component, so that multiple cans are placed close together in the middle of the sorting platform. The material handling platform is equipped with rotatable support plates on both sides. The support plates can rotate back and forth under the drive of the first drive mechanism. After the support plates rotate downwards to the position, they form the discharge port. A first pushing component is provided on the material handling platform. Driven by the second driving mechanism, the first pushing component moves back and forth along the horizontal and perpendicular conveying direction of the cans. The first pushing component can push multiple cans onto the material receiving plates on both sides of the material handling platform. The material support plate is equipped with a first suction cup bracket, which has multiple first suction cups with downward-facing suction nozzles. The first suction cup bracket can move up and down under the drive of the third drive mechanism. The packaging box is conveyed to the bottom of the support plate by the packaging box conveying mechanism, and the opening at the top of the packaging box corresponds to the discharge port; multiple first suction cups pick up multiple cans on the support plate and move them downward through the discharge port to load multiple cans into the packaging box; the packaging box with the cans packed is sent out by the packaging box conveying mechanism. The box-sealing and folding machine includes a conveying mechanism, on which a folding mechanism and an adhesive tape applicator are sequentially mounted. The conveying mechanism receives the packaging boxes that have been packed with canned goods. After the packaging boxes are conveyed by the conveying mechanism, they are folded by the folding mechanism and then sealed by the adhesive tape applicator.

2. The boxing and packaging production line for square canned goods according to claim 1, characterized in that: The material handling platform is provided with two material support plates on both sides. The two material support plates can rotate back and forth in opposite directions under the drive of the first drive mechanism. After each pair of material support plates rotates downward into place, a material discharge port is formed. The first driving mechanism includes two first rotating shafts fixedly connected to one side of the material receiving plate, the two first rotating shafts being pivotally connected to the first frame, the axial directions of the two first rotating shafts being parallel to the conveying direction of the can, and a first cylindrical gear being fixedly connected to each of the two first rotating shafts. A first cylinder is mounted on the first frame, and the first cylinder simultaneously drives two first racks to move up and down, with the two first racks meshing with the two first cylindrical gears respectively. After the two material receiving plates rotate downwards to their positions, they can restrict the two upper cover plates of the packaging box from moving towards the middle. The first frame on both sides below the material handling platform is equipped with a lever mechanism. Each lever mechanism includes two parallel second rotating shafts pivotally connected to the first frame. The axis of each second rotating shaft is perpendicular to the conveying direction of the can. Each second rotating shaft is fixedly connected to a lever and a second cylindrical gear. The first frame is equipped with a second cylinder. The second cylinder simultaneously drives two second racks to move up and down. The two second racks mesh with the two second cylindrical gears respectively, thereby driving the two second rotating shafts to rotate in opposite directions. When the two levers rotate downward, they can respectively move one of the cover plates on the packaging box and restrict the two cover plates from bending and closing towards the middle.

3. The boxing and packaging production line for square canned goods according to claim 1, characterized in that: The feeding platform is provided with a guard plate, which is fixedly connected to the first frame. The guard plate is parallel to the feeding platform, and the distance between the guard plate and the feeding platform is greater than the height of the can. The guard plate is used to prevent the can from falling off the feeding platform. The first pusher is provided with a first clearance through hole, through which the guard plate passes. Two positioning cylinders are also installed at intervals under the material handling platform. Each positioning cylinder drives a positioning component to move up and down. The positioning component has a positioning part parallel to the input direction of the cans. The material handling platform has two elongated through holes corresponding to the two positioning components. When the positioning component moves upward, the positioning part passes through one of the elongated through holes and protrudes upward from the top of the material handling platform to perform initial positioning on one side of multiple cans. When the positioning component moves downward, the upper end of the positioning part is level with or lower than the upper end of the material handling platform. A calibration plate is provided below the first suction cup bracket. The calibration plate is fixedly connected to the first suction cup bracket. The calibration plate is provided with multiple second clearance through holes. Each second clearance through hole allows a portion of the first suction cup to pass through. The first suction cup nozzle is located below the calibration plate. When multiple first suction cups simultaneously pick up multiple cans, the lower end face of the calibration plate simultaneously contacts the upper end of multiple cans.

4. The boxing and packaging production line for square canned goods according to claim 1, characterized in that: Both sides of the material handling platform are equipped with can positioning mechanisms. Multiple cans are positioned by the can positioning mechanisms before being picked up by multiple suction cups. A packaging box positioning mechanism is also provided under the material receiving plate. The packaging box is positioned by the packaging box positioning mechanism so that the upper opening of the packaging box corresponds to the material discharge port. Each of the can positioning mechanisms includes a first limiting rod and a second limiting rod disposed on the feeding platform. The first limiting rod is parallel to the conveying direction of the can, and the second limiting rod is perpendicular to the conveying direction of the can. The first limiting rod, the second limiting rod, the can blocking component, and the feeding plate together position multiple cans. The packaging box positioning mechanism includes a third limiting rod, a fourth limiting rod, a push plate, and multiple second suction cups. The third limiting rod is perpendicular to the conveying direction of the can, and the fourth limiting rod is parallel to the conveying direction of the can. The push plate, driven by the third cylinder, drives one side of the packaging box to move towards the third limiting rod. Multiple second suction cups are mounted on a second suction cup bracket. The second suction cup bracket, driven by the fourth cylinder, moves back and forth in a direction perpendicular to the can input direction. The multiple second suction cups hold the other side of the packaging box, causing the other side of the packaging box to move towards the fourth limiting rod. The can conveying mechanism includes a first belt conveyor with two parallel guide rods on it. The two guide rods guide the movement of the cans, and a guard rod is provided between the two guide rods to prevent the cans from jumping off the first belt conveyor. The packaging box conveying mechanism includes a second belt conveyor, a third belt conveyor, and a fourth belt conveyor. The second belt conveyor is located below the first belt conveyor. The second, third, and fourth belt conveyors are arranged in parallel to each other. The third and fourth belt conveyors are located below the material support plates on both sides of the material handling platform. A second pushing member is provided on the second belt conveyor. Driven by the fourth driving mechanism, the second pushing member moves back and forth along the horizontal and perpendicular conveying direction of the cans. When the second pushing member moves to one side, it pushes a package onto the third belt conveyor. When the second pushing member moves to the other side, it pushes a package onto the fourth belt conveyor. A transition plate is provided between the second belt conveyor and the third belt conveyor to allow the package to move. A limit rod is provided on the second pushing member perpendicular to the can input direction, and the limit rod restricts the movement of the package along the conveying direction. The output ends of the third and fourth belt conveyors are connected to the first roller conveyor. The output end of the first roller conveyor is connected to the fifth belt conveyor. A third pushing member is provided on one side of the first roller conveyor. The third pushing member moves back and forth along the horizontal and perpendicular conveying direction of the cans under the drive of the fifth driving mechanism. The third pushing member pushes the packaging box delivered from the third belt conveyor to the first roller conveyor to the middle of the first roller conveyor. A fourth pushing member is provided on the other side of the first roller conveyor. The fourth pushing member moves back and forth along the horizontal and perpendicular conveying direction of the cans under the drive of the sixth driving mechanism. The fourth pushing member pushes the packaging box delivered from the fourth belt conveyor to the first roller conveyor to the middle of the first roller conveyor. The first roller conveyor then pushes the packaging box to the fifth belt conveyor, and the fifth belt conveyor then sends the packaging box out.

5. The boxing and packaging production line for square canned goods according to claim 1, characterized in that: The can conveying mechanism is connected to a can conveying and reversing device, which includes a sixth belt conveyor and a seventh belt conveyor. A turntable mechanism is provided between the sixth belt conveyor and the seventh belt conveyor. The turntable mechanism includes a second frame and a turntable. The second frame has an end face. The turntable is fixed to a central shaft. The central shaft is pivotally connected to the second frame through a one-way bearing. The turntable is parallel to the end face on the second frame. The outer periphery of the turntable is evenly provided with multiple slots. Each slot has the same structure and size. Each slot has two sides that contact the can. The included angle between the two sides is 90°. The belt drive end faces of the sixth belt conveyor and the seventh belt conveyor are flush with the end face of the second frame; The second frame is also equipped with a first limiting member with a concave arc limiting surface, which is located near the turntable; the sixth belt conveyor and the seventh belt conveyor are both equipped with guide rods to guide the movement of the cans; The sixth belt conveyor feeds the can into the slot and drives the turntable to rotate using the driving force of the sixth belt conveyor transmitted by the can. The turntable drives the can to rotate and change direction before pushing the can onto the seventh belt conveyor. During the turning process of the can, the concave arc limiting surface prevents the can from leaving the slot.

6. The boxing and packaging production line for square canned goods according to claim 5, characterized in that: The turntable has 12 evenly distributed slots around its outer perimeter; the central axis of the concave arc limiting surface overlaps with the central axis of the turntable. The belt drive end face of the sixth belt conveyor, the belt drive end face of the seventh belt conveyor, and the end face of the second frame are horizontally arranged, and the sixth belt conveyor and the seventh belt conveyor are parallel to each other and staggered. A second limiting member is provided at the input end of the seventh belt conveyor. The limiting part of the second limiting member is arranged perpendicular to the conveying direction of the can. The lower side of the limiting part restricts the can from leaving the seventh belt conveyor. The canned food is rectangular. A screening guide is provided between the output end of the seventh belt conveyor and the input end of the can conveying mechanism. The screening guide is provided with a U-shaped guide groove. The distance between the two inner guide surfaces of the U-shaped guide groove is greater than the length dimension of the can. A rectangular screening through hole is provided on the bottom surface of the U-shaped guide groove. The two inner long sides of the rectangular screening through hole are parallel to the two inner sides of the U-shaped guide groove. The distance between the two inner long sides of the rectangular screening through hole is greater than the width dimension of the can but less than the length dimension of the can.

7. The boxing and packaging production line for square canned goods according to claim 5, characterized in that: The can conveying and reversing device is connected to a can coding mechanism. The coding mechanism includes an eighth belt conveyor connected to the sixth belt conveyor. The upper surface of the can is provided with a handle for opening the can. The eighth belt conveyor conveys the coded can to the sixth belt conveyor. The eighth belt conveyor is equipped with a camera, a first spraying terminal, and a second spraying terminal. The camera, the first spraying terminal, and the second spraying terminal are all electrically connected to the controller. The camera sends a signal to the controller by identifying the position of the handle on the can. The controller then controls the first or second spraying terminal to spray code, so that the spraying position on the upper surface of different cans is consistent.

8. A boxing and packaging production line for square canned goods according to any one of claims 1 to 7, characterized in that: Between the canning machine and the lid-sealing machine, there is a paper-filling device for inserting padding paper into the packaging box; the paper-filling device includes a third frame, on which is a paper-filling area for placing a whole stack of paper, and a third suction cup bracket on the paper-filling area, on which is a third suction cup, which is driven up and down by a seventh drive mechanism; the paper-filling area has inclined or arc-shaped pads on opposite sides, which support the front and rear of the whole stack of paper respectively, so that the front and rear of the whole stack of paper are tilted upwards, while the middle of the whole stack of paper is supported on the paper-filling area; the third suction cup bracket drives the third suction cup to move down into place and then picks up the topmost paper of the whole stack of paper; The seventh drive mechanism is connected to a slider, which is driven by the eighth drive mechanism to move back and forth horizontally; A second roller conveyor and a packaging box positioning mechanism are installed on one side of the third frame. The second roller conveyor includes multiple spaced and parallel horizontally arranged rollers, which can rotate in the same direction under the drive of a motor and a transmission mechanism. The packaging box positioning mechanism includes two parallel guide rods and a stop block. The two parallel guide rods are set on the rollers, and the stop block is driven by a fifth cylinder to move up and down through the gap between two adjacent rollers. When the stop block moves upward, the stop block, the two parallel guide rods, and the multiple rollers position the packaging box with the opening of the packaging box facing upward. After the packaging box is positioned by the packaging box positioning mechanism, the third suction cup drives the padding paper to be placed inside the packaging box. When the stop block moves downward to make room, the packaging box can move horizontally under the drive of the multiple rollers and the guidance of the two guide rods. The input end of the second roller conveyor is connected to the output end of the packaging box conveying mechanism, and the output end of the second roller conveyor is connected to the input end of the conveying mechanism on the folding and sealing machine.

9. A boxing and packaging production line for square canned goods according to claim 8, characterized in that: The seventh drive mechanism includes a sixth cylinder. A distance detection sensor is also installed on the third suction cup bracket. The distance detection sensor is electrically connected to the controller. The third suction cup is a non-contact vacuum suction cup. During the downward movement of the third suction cup bracket, after the distance detection sensor detects that the distance between the third suction cup and the pad paper reaches the set parameter, the distance detection sensor sends a signal to the controller. The controller controls the sixth cylinder to stop moving through the solenoid valve, so that the third suction cup can pick up the pad paper without directly contacting it. A horizontally arranged turntable is pivotally connected to the third frame. The turntable is driven by the ninth drive mechanism to rotate intermittently or rotate back and forth intermittently. The upper surface of the turntable is provided with two pad paper placement areas. The two pad paper placement areas are symmetrically arranged with respect to the cross-section of the central axis of one turntable. Each pad paper placement area is provided with inclined or arc-shaped pads on both sides. The turntable is connected to multiple vertical limiting rods around the perimeter of each pad paper placement area, and the multiple vertical limiting rods restrict the horizontal movement of the entire stack of pad papers.

10. A boxing and packaging production line for square canned goods according to claim 9, characterized in that: The lower part of the turntable is fixed to a rotating shaft, which is pivotally connected to the third frame. The ninth drive mechanism includes a seventh cylinder, a rack and a gear. The gear is fixed to the rotating shaft, the rack is fixed to the piston rod of the seventh cylinder, and the housing of the seventh cylinder is fixed to the third frame. The rack and gear mesh with each other and then drive the turntable to rotate back and forth intermittently through the seventh cylinder. The turntable is provided with a through hole for each padding paper placement area. Two sensor probes are installed under the turntable. Both sensor probes are connected to the controller. Each sensor probe detects whether there is still padding paper in the padding paper placement area through one of the through holes, so that the controller can control the ninth drive mechanism to drive the turntable to change position in time. A first support frame is installed on the side of the second roller conveyor. A detection sensor is installed on the first support frame. The detection sensor is located above the roller and is connected to a controller. When the detection sensor detects that a package is moving along the roller, the controller controls the fifth cylinder to move, causing the stop block to move up and block the package. The eighth drive mechanism includes an eighth cylinder. A second support frame is provided on the upper part of the third frame. A guide rail is provided on the second support frame to cooperate with the slider. The housing of the eighth cylinder is fixed to the second support frame, and the piston rod of the eighth cylinder is connected to the slider.

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