Automatic vertical vertical carton opening and bottom sealing machine and use method

Abstract

The application discloses a kind of corrugated carton automatic vertical vertical opening box bottom sealing machine and use method, after moving to the initial position of horizontal moving assembly, utilize the box to the state of being shaped to approach square by just right component, it is convenient for subsequent folding page operation, the output end of vertical folding page component is contacted with the corresponding upper and lower two folds of carton after elongation and is folded towards inside the box, the output end of horizontal folding page component is contacted with the corresponding left and right two folds of carton and is folded towards inside the box, it is convenient for subsequent down shift and continuously fold the bottom of box after fold, it is convenient to seal glue, without additional limit device and compact device again, control box is equipped, lifting assembly, horizontal moving assembly, suction component, just right component, vertical folding page component, horizontal folding page component, glue sealing device and discharge device are electrically connected with first carton induction sensor, second carton induction sensor respectively by control box and form linkage, it is convenient to form self-control.

Description

Technical Field

[0001] This invention relates to the field of box opening and sealing equipment, and in particular to an automatic vertical box opening and sealing machine for corrugated cartons and its usage method. Background Technology

[0002] Pharmaceutical packaging requires a large number of carton opening and sealing machines. To save space, vertical carton opening and sealing machines are usually chosen. Existing sealing machines are shown in patent number ZL201911283607.4, entitled "An Automatic Vertical Carton Forming and Sealing Machine Using Needle Punching Method." However, existing vertical sealing machines have the following problems: 1. It is equipped with a detection device for sealing inspection, but the overall automation of the device is poor; 2. The use of needles during the opening and shaping process of the device will more or less affect the box, which does not meet the requirements of pharmaceutical production packaging. A non-destructive opening method and shaping device are needed. 3. Although it is a vertical unit, it still uses a horizontal assembly line method for layout and sealing. The overall area occupied by the device is large, making it inconvenient to use and resulting in low utilization of vertical space. 4. The feeding end of the device is integrated with the equipment, which is inconvenient for feeding. The cardboard boxes need to be fed into the device one by one by conveyor, which requires an additional feeding device and further lengthens the device. 5. After folding, a shaping device needs to be set up before sealing to ensure that the folded shape remains stable during sealing. Summary of the Invention

[0003] This invention provides an automatic vertical opening and sealing machine for corrugated cartons and its usage method, aiming to solve the problems mentioned above, such as poor self-control, the impact of needle punching on the overall structure of the carton, large footprint and low vertical space utilization, inconvenient feeding, and the need to set up an additional shaping device to ensure the stability of the folded shape before sealing.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An automatic vertical opening and sealing machine for corrugated cardboard boxes includes a perforated mounting frame and a sealing device. The bottom of the perforated mounting frame is a sealing space, the top of the sealing space is a folding space, and one side of the sealing space is a lifting space. The top of the folding space extends above the lifting space. The lifting space is equipped with a lifting component, and the top of the lifting component is equipped with several stacked cardboard boxes. The bottom of the folding space is equipped with a first cardboard box sensing sensor that forms a sensing interaction with the topmost cardboard box. The top of the folding space is provided with a horizontal moving component. The moving end of the horizontal moving component is provided with a retractable adsorption component. The adsorption component moves to the top of the lifting space and forms a vacuum adsorption fit with one side wall of the top carton, and moves the carton into the folding space. The adsorption component is provided with a straightening component on both sides. The straightening component presses against the side wall of the carton to straighten the position of the carton. The upper and lower sides of the folding space are symmetrically arranged with retractable vertical folding components. The vertical folding components are tilted towards the inside of the upright carton. After being extended, the output end of the vertical folding components contacts the corresponding upper and lower folds of the carton and folds towards the inside of the carton. The folding space is located between the vertical folding components and has a horizontal folding component. The output ends on both sides of the horizontal folding component are connected by a linkage to rotate in a quarter circle toward the carton. During the rotation, the output ends of the horizontal folding component contact the corresponding left and right folds of the carton and fold toward the inside of the carton. A sealing device is located directly below the horizontal folding assembly within the sealing space. A discharging device is located directly below the sealing device. A second carton sensing sensor is located on the top of the discharging device, which works in conjunction with the bottom of the sealed carton. A control box is provided on one side of the sealing space. The lifting component, horizontal moving component, adsorption component, straightening component, vertical folding component, horizontal folding component, sealing device and discharging device are electrically connected to the first carton sensing sensor and the second carton sensing sensor respectively through the control box to form a linkage.

[0005] Preferably, the lifting assembly includes a movable lifting platform.

[0006] More preferably, the horizontal moving component includes a guide rail that extends from the top of the sealing space to above the lifting space. A slider is slidably mounted on the guide rail. One end of the guide rail is provided with a first telescopic device parallel to the guide rail. The output end of the first telescopic device is connected to the slider to form a linkage.

[0007] Furthermore, the adsorption assembly includes a fixed block fixed to one side of the slider. The top of the fixed block is provided with a second telescopic device. The output end of the second telescopic device extends vertically downward after passing through the fixed block. The end of the output end of the second telescopic device is provided with a first mounting plate. The first mounting plate is parallel to the side wall of the carton. The bottom of the first mounting plate is provided with several vacuum suction cups. After adsorption, the first mounting plate is located in the middle of the adsorbed side wall of the carton.

[0008] Furthermore, the straightening assembly includes a limiting plate that is vertically disposed at the top of the folding space and extends vertically downward, and the limiting plate is perpendicular to the guide rail. On the side of the limiting plate near the guide rail away from the carton, a second mounting plate that extends vertically downward is provided on the slider side. The second mounting plate is directly opposite the limiting plate. On the side of the second mounting plate away from the limiting plate, a third telescopic device is provided. The output end of the third telescopic device passes through the second mounting plate and is provided with a straightening plate, which is parallel to the limiting plate.

[0009] Specifically, the vertical folding assembly includes a fixing mounting component, which is respectively mounted on the mounting brackets at the top and bottom of the folding box space. The fixed end of the fourth telescopic device is fixedly mounted to the corresponding mounting bracket through the fixing mounting component, and the fourth telescopic device is tilted towards the inside of the upright carton. The output end of the fourth telescopic device is hinged to the middle position of the folding plate through the first hinge component. The folding plate can rotate around the first hinge component until the side of the folding plate away from the first hinge component is tightly pressed against the corresponding side folding.

[0010] More specifically, the horizontal folding assembly includes a horizontally arranged third mounting plate, which is located in the middle of the side of the mounting frame on the same side as the vertical folding assembly. Both sides of the third mounting plate are fixedly engaged with the mounting frame on the corresponding side. Both the upper and lower sides of the third mounting plate are provided with linkage transmission assemblies, and the linkage transmission assemblies correspond one-to-one with the left and right folds. The output end of each linkage transmission assembly is provided with a vertically arranged folding roller. The folding roller rotates in a circular motion in the horizontal direction through the linkage transmission assembly. The third mounting plate is provided with an arc-shaped groove corresponding to the movement of the folding roller. In the initial position, the folding rollers on both sides are arranged outwards and embedded in the corresponding arc-shaped grooves. The line connecting the center of the folding roller and the rotation center is parallel to the third mounting plate. At the final position, the folding rollers on both sides rotate inward and remain tangent to the outer wall of the corresponding side fold until the line connecting the center of the folding roller and the center of rotation is perpendicular to the third mounting plate. At this point, the fold is completely folded flat with the box surface.

[0011] In detail, the linkage transmission assembly is centrally symmetrically arranged in the vertical direction about the point corresponding to the middle position of the third mounting plate and the carton. Each linkage transmission assembly includes a rotating seat on the corresponding side of the third mounting plate. A rotating disk is rotatably mounted on the rotating seat in a coaxial manner. One end of the rotating disk is hinged to the output end of the fifth telescopic device through a fisheye bearing. A shim is provided between the fifth telescopic device and the third mounting plate. The fixed end of the fifth telescopic device is hinged to the top of the shim through a second hinge. The bottom of the shim is fixedly engaged with the third mounting plate. The folding roller is located radially on the rotating seat, and the side wall of the folding roller is fixedly connected to the other end of the rotating disk through an arc-shaped connecting plate.

[0012] More specifically, the output end of the sealing device is flush with the bottom surface of the folded carton, and the bottom is sealed when the carton moves down. When the bottom of the carton is not more than two-thirds sealed, the carton is always in contact with the folding roller and the limiting plate.

[0013] A method for using an automatic vertical opening and sealing machine for corrugated cartons, comprising the following steps: S1. Place the carton: Stack the carton boards on the movable lifting platform of the lifting component, so that the carton boards and the lifting space are arranged concentrically and coaxially, with the shorter side of the carton board close to the folding space, and the hinges of the carton board to be folded are all located on the side close to the vertical folding component. S2, Pick up the carton: The movable lifting platform rises until the top carton is sensed by the first carton sensing sensor. At this time, the control box receives the sensing signal, brakes the movable lifting platform, and activates the first telescopic device of the horizontal moving component, so that the slider moves to the middle position of the shorter side of the carton board and brakes the first telescopic device. Activate the second telescopic device of the adsorption assembly to lower the first mounting plate until the first carton sensing sensor detects the first mounting plate. Then, brake the second telescopic device and connect the vacuum suction cup for adsorption. After adsorption is completed, the second telescopic device is activated and retracted until it returns to its initial position and brakes. After the second telescopic device is braked, the first telescopic device is activated, causing the slider to move to the initial position and then braking the first telescopic device. S3, Shaping the Carton: After passing through S2, the carton opens slightly under the action of gravity, with the short sides at the top and bottom and the upper sides at the sides, but it is not regular. The control box activates the third telescopic device of the straightening component. During the synchronous movement of the straightening plate, the carton moves closer to the limiting plate. After it outputs the specified length, it brakes, so that one side of the carton is in contact with the limiting plate to complete the vertical position. The opposite side of the carton also remains vertical under the limit of the straightening plate. At this time, the carton can still move up and down between the limiting plate and the straightening plate. S4. Folding the top and bottom flaps: After shaping, the vertical flap assembly corresponds one-to-one with the top and bottom flaps. The control box activates the fourth telescopic device of the vertical flap assembly. Under the pushing action, the flap plate gradually overlaps with the outer wall of the corresponding flap. At the same time, under the continuous output action of the fourth telescopic device, the flap plate pushes the corresponding flap into the carton to form a fold. After the output reaches the bottom, the folding is completed, and the fourth telescopic device retracts to the initial position. S5. Folding the left and right flaps: After completing the top and bottom flaps, the control box starts the fifth telescopic device of the horizontal flap assembly to output the specified length. The rotating disk rotates synchronously through the fisheye bearing. The rotation of the rotating disk causes the flap roller to rotate out of the arc groove and make a quarter circle rotation. During the rotation, the flap roller contacts the outer wall of the corresponding left and right flaps and presses the corresponding flaps to rotate inward towards the box. When the flap roller reaches the final position, the left and right flaps are completely folded above the top and bottom flaps and are flush with the bottom of the box. When it reaches the final position, the fifth telescopic device brakes, so that the bottom of the box remains flush under the restriction of the flap roller. S6. Sealing the bottom: After the left and right folds are completed, the control box starts the sealing device and restarts the second telescopic device of the adsorption component to lower the carton. During the process, the carton is always limited by the side walls through the folding roller, the limiting plate and the straightening plate. The sealing device applies glue to the center seam after the left and right folds are folded and seals the bottom. After the bottom is sealed, the carton continues to be lowered. S7. Feeding: Lower the carton until the second carton sensor detects the bottom of the carton. After receiving the signal, the control box stops lowering the carton, cancels the suction after the vacuum suction cup is activated, and moves the second telescopic device of the suction assembly to its initial position. At the same time, the fifth and third telescopic devices are controlled to restore the folding roller and the straightening plate to their initial positions. The sealed carton falls onto the discharge device. The control box starts the discharge device to send the carton out until the second carton sensor can no longer detect the signal. Then, the discharge device is stopped, and S2~S7 are repeated until all the cartons are sealed.

[0014] The beneficial effects of this invention are: 1. This invention uses two signal sensors. The feed signal is used to control the start of folding and bottom sealing. After the start, each process is carried out sequentially until the discharge signal is sensed. The discharge signal is used to discharge the material, resume each process, and recycle until all cartons are sealed. It has a high degree of automation. 2. This invention lifts the cardboard box using vacuum adsorption and automatically opens it using the cardboard box's own gravity. Finally, it is shaped by an alignment component to ensure the shape of the cardboard box during folding and sealing. At the same time, it makes full use of the cardboard box's own properties, resulting in a good opening effect. 3. The folding and back cover of the present invention are concentrated in the vertically arranged folding and sealing space. The device makes full use of the vertical space, occupies less horizontal space, reduces the layout of the horizontal assembly line, avoids excessive footprint, and is convenient to use. 4. The lifting component and device of the present invention are installed separately, allowing for movement and lifting, which facilitates the loading of cartons. After loading is completed, the cartons can be moved into the lifting space. 5. After the folding is completed, the straightening component and the horizontal folding component will continuously limit the position of the carton, eliminating the need for additional shaping devices to maintain the folded shape. The arc-shaped connecting plate can also ensure the integrity of the fold during the folding process and guarantee the sealing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention when picking up a cardboard box; Figure 2 This is a schematic diagram of the shaping process of the cardboard box according to the present invention; Figure 3 This is a schematic diagram of the folding of the upper and lower pages according to the present invention; Figure 4 This is an enlarged schematic diagram of the horizontal folding component of the present invention; Figure 5 This is a schematic diagram of the folding of the left and right pages according to the present invention; Figure 6 This is a schematic diagram of the bottom sealing process of the present invention; Figure 7 This is a schematic diagram of the feeding process of the present invention; Figure 8 This is a schematic diagram of the horizontal moving component, the adsorption component, and the alignment component of the present invention; In the diagram: 1. Hollowed-out mounting frame; 11. Sealing space; 12. Folding space; 13. Lifting space; 2. Lifting components; 21. Movable lifting platform; 3. Horizontal moving assembly; 31. First telescopic device; 32. Guide rail; 33. Slider; 4. Adsorption assembly; 41. Fixing block; 42. Second telescopic device; 43. First mounting plate; 44. Vacuum suction cup; 5. Alignment component; 51. Limiting plate; 52. Second mounting plate; 53. Third telescopic device; 54. Alignment plate; 6. Vertical folding assembly; 61. Fixing and mounting component; 62. Fourth telescopic device; 63. First hinge component; 64. Folding plate; 7. Horizontal folding assembly; 71. Third mounting plate; 72. Arc groove; 73. Elevating block; 74. Rotating seat; 75. Rotating disk; 76. Second hinge; 77. Fisheye bearing; 78. Arc connecting plate; 79. Folding roller; 710. Fifth telescopic device; 8. Sealing device; 9. Discharge device; 100. First carton sensing sensor; 110. Second carton sensing sensor; 120. Control box. Detailed Implementation

[0016] The embodiments will be further described below with reference to the accompanying drawings.

[0017] like Figures 1-8As shown in the preferred embodiment 1, an automatic vertical opening and sealing machine for corrugated boxes includes a hollow mounting frame 1 and a sealing device 8. The bottom of the hollow mounting frame 1 is a sealing space 11, the top of the sealing space 11 is provided with a folding space 12, and a lifting space 13 is provided on one side of the sealing space 11. The top of the folding space 12 extends above the lifting space 13. The lifting space 13 is equipped with a lifting component 2. The top of the lifting component 2 is equipped with several stacked cardboard boxes. The bottom of the folding space 12 is equipped with a first cardboard box sensing sensor 100, which forms a sensing interaction with the top cardboard box. When the box is lifted to the point where it is sensed by the first cardboard box sensing sensor 100, the automatic bottom sealing process begins. The top of the folding space 12 is provided with a horizontal moving component 3. The moving end of the horizontal moving component 3 is provided with a retractable adsorption component 4. The adsorption component 4 moves to the top of the lifting space 13 and forms a vacuum adsorption fit with one side wall of the top carton, and moves the carton to the folding space 12. The adsorption component 4 is provided with a straightening component 5 on both sides. The straightening component 5 presses the side wall of the carton to straighten the position of the carton. The horizontal moving component 3 moves the adsorption component 4 to the set position. The adsorption component 4 adsorbs and lifts the top carton. The carton board automatically opens under the action of gravity. After moving to the initial position of the horizontal moving component 3, the straightening component 5 is used to shape the carton to a near square state to facilitate subsequent folding operations. The upper and lower sides of the folding space 12 are symmetrically arranged with retractable vertical folding components 6. The vertical folding components 6 are tilted towards the inside of the upright carton. After being extended, the output end of the vertical folding components 6 contacts the corresponding upper and lower folds of the carton and folds towards the inside of the carton. The upper and lower folds are folded first, and then the left and right folds are convenient. The folding space 12 is located between the vertical folding components 6 and has a horizontal folding component 7. The output ends on both sides of the horizontal folding component 7 are connected by a connecting rod to rotate in a quarter circle toward the carton. During the rotation, the output ends of the horizontal folding component 7 contact the corresponding left and right folds of the carton and fold toward the inside of the carton. This facilitates the continuous limiting and matching of the bottom of the carton after folding during the subsequent downward movement, making it easy to seal the carton without the need for additional limiting and pressing devices. A sealing device 8 is located directly below the horizontal folding assembly 7 within the sealing space 11. A discharging device 9 is located directly below the sealing device 8. A second carton sensing sensor 110 is located on the top of the discharging device 9 to form a sensing interaction with the bottom of the sealed carton. The height of the top of the discharging device 9 from the bottom of the sealing device 8 is greater than the height of the sealed carton, ensuring that the carton is already sealed when the sensor is activated. After sensing this signal, the device will convey the sealed material and return all devices to their initial positions and states so as to start the cycle of sealing the next carton. A control box 120 is provided on one side of the sealing space 11. The lifting assembly 2, horizontal moving assembly 3, adsorption assembly 4, straightening assembly 5, vertical folding assembly 6, horizontal folding assembly 7, sealing device 8, and discharging device 9 are electrically connected to the first carton sensing sensor 100 and the second carton sensing sensor 110 respectively through the control box 120 to form a linkage. This facilitates automatic control. For specific procedures, please refer to the usage method embodiment.

[0018] As a more preferred embodiment 2, the lifting assembly 2 includes a movable lifting platform 21. This allows for easy movement; the platform can be moved elsewhere for cardboard board loading and then moved to the lifting space 13 for convenient use. Furthermore, connecting the movable lifting platform 21 to the control box 120 enables automated control.

[0019] In a more preferred embodiment 3, the horizontal moving component 3 includes a guide rail 32 extending from the top of the sealing space 11 to above the lifting space 13. A slider 33 is slidably mounted on the guide rail 32. One end of the guide rail 32 is provided with a first telescopic device 31 parallel to the guide rail 32. The output end of the first telescopic device 31 is connected to the slider 33 to form a linkage. The guide rail 32 ensures the stability of the movement, and the first telescopic device 31 provides the driving force. In use, for convenience, the two endpoints can be directly set as set points by controlling the length of the guide rail 32 and the output length of the first telescopic device 31. When retracted to the retracted endpoint, it is exactly at the fold position; when extended to the extended endpoint, it is exactly at the adsorption position. This facilitates the operation of the automatic control process and can also reduce the arrangement of sensors and reduce costs.

[0020] In a more preferred embodiment 4, the adsorption assembly 4 includes a fixing block 41 fixed to one side of the slider 33. A second telescopic device 42 is provided at the top of the fixing block 41. The output end of the second telescopic device 42 extends vertically downwards through the fixing block 41. A first mounting plate 43 is provided at the end of the output end of the second telescopic device 42. The first mounting plate 43 is parallel to the side wall of the carton. Several vacuum suction cups 44 are provided at the bottom of the first mounting plate 43. After adsorption, the first mounting plate 43 is located in the middle of the adsorbed side wall of the carton, ensuring the stability of the adsorption and preventing the carton board from affecting the folding due to instability. The second telescopic device 42 is used to control the height of the first mounting plate 43, thereby providing driving force for adsorption and extraction of the carton. The carton board is adsorbed by the adsorption force of the vacuum suction cups 44.

[0021] Preferably, there are at least four vacuum suction cups 44, and the four vacuum suction cups 44 are symmetrical about the middle position of the first mounting plate 43.

[0022] As a more preferred embodiment 5, the straightening component 5 includes a limiting plate 51 that is vertically disposed at the top of the folding box space 12 and extends vertically downward, and the limiting plate 51 is perpendicular to the guide rail 32. The limiting plate 51 is located near the side of the guide rail 32 away from the carton. A second mounting plate 52 that extends vertically downward is provided on one side of the slider 33. The second mounting plate 52 is directly opposite the limiting plate 51. A third telescopic device 53 is provided on the side of the second mounting plate 52 away from the limiting plate 51. The output end of the third telescopic device 53 passes through the second mounting plate 52 and is provided with a straightening plate 54. The straightening plate 54 is parallel to the limiting plate 51. When the cardboard box is lifted after being adsorbed, because only one side wall is adsorbed, the cardboard box will hang downwards under the action of gravity with that side wall as the top, thus opening and forming a parallelogram that is not quite square. The parallelogram box enters between the limiting plate 51 and the straightening plate 54. The straightening plate 54 moves closer to the limiting plate 51 under the drive of the third telescopic device 53. After outputting the set length, one side of the cardboard box is close to being flush with the limiting plate 51, and the other side of the cardboard box is flush with the straightening plate 54. At this time, the cardboard box is shaped to be close to square and can be folded. The two sides of the cardboard box are limited by the limiting plate 51 and the straightening plate 54, and the top side of the cardboard box is limited by vacuum adsorption. The cardboard box as a whole is in a relatively stable state, which facilitates the subsequent folding.

[0023] As a more preferred embodiment 6, the vertical folding assembly 6 includes a fixing mounting member 61, which is respectively disposed on the mounting brackets at the top and bottom of the folding box space 12. The fixed end of the fourth telescopic device 62 is fixedly installed to the corresponding mounting bracket through the fixing mounting member 61, and the fourth telescopic device 62 is tilted towards the inside of the upright carton. The output end of the fourth telescopic device 62 is hinged to the middle position of the folding plate 64 through the first hinge member 63. The folding plate 64 can rotate around the first hinge member 63 until the side of the folding plate 64 away from the first hinge member 63 is tightly folded against the corresponding side. The fourth telescopic device 62 provides driving force, causing the folding plate 64 to extend tilted inward toward the box. During this process, the folding plate 64 will contact the outer wall of the corresponding side fold, and under the driving action of the fourth telescopic device 62, the folding plate 64 will gradually press against the corresponding side fold and fold the corresponding side fold toward the box. When the output is complete, the fold is completely folded into the box. At this time, even if the fourth telescopic device 62 is retracted, the fold will always be in the folded state. After the left and right folds are completely folded, they will cover the upper and lower folds so that they are always located inside the box.

[0024] Based on embodiment 6, as a more preferred embodiment 7, the fixing mounting member 61 can be a fixed hinge member with a bolt as the hinge axis. When the nuts on both sides of the bolt are tightened, the hinge member will be fixed in position, and the fourth telescopic device 62 can be fixed at this time. When the nuts on both sides of the bolt are loosened, the fourth telescopic device 62 can be rotated and disassembled. On the one hand, it is convenient to adjust for cartons of different sizes. On the other hand, when the folding distance exceeds the currently installed fourth telescopic device 62, a new fourth telescopic device 62 can be replaced to ensure smooth folding.

[0025] Preferably, the angle between the fixed position of the fourth telescopic device 62 and the vertical plane is usually selected as 10°~30°.

[0026] As a more preferred embodiment 8, the horizontal folding assembly 7 includes a horizontally arranged third mounting plate 71. The third mounting plate 71 is located in the middle of the side of the mounting frame on the same side as the vertical folding assembly 6, and both sides of the third mounting plate 71 are fixedly engaged with the mounting frame on the corresponding side. The upper and lower sides of the third mounting plate 71 are provided with linkage transmission assemblies, and the linkage transmission assemblies correspond one-to-one with the left and right folds. The output end of the linkage transmission assemblies is provided with vertically arranged folding rollers 79. The folding rollers 79 rotate in a circular motion in the horizontal direction through the linkage transmission assemblies. A quarter-circular rotation can ensure that the folding rollers 79 gradually approach the fold and finally stick to the fold. The third mounting plate 71 is provided with an arc-shaped groove 72 that corresponds to the movement of the folding rollers 79. In the initial position, the folding rollers 79 on both sides are arranged outwards, and the folding rollers 79 are embedded in the corresponding arc-shaped grooves 72. The line connecting the center of the folding rollers 79 and the rotation center is parallel to the third mounting plate 71. At the final position, the folding rollers 79 on both sides rotate inward and remain tangent to the outer wall of the corresponding side fold until the line connecting the center of the folding roller 79 and the rotation center is perpendicular to the third mounting plate 71. At this point, the fold is completely folded to be flat with the box surface, ensuring that it is always in a limited position. After folding, it can also act as a limiting component to facilitate subsequent sealing.

[0027] The linkage drive assembly is centrally symmetrically arranged in the vertical direction about the point corresponding to the middle position of the third mounting plate 71 and the carton, ensuring synchronous folding of the left and right hinges and avoiding collisions. Each linkage drive assembly includes a rotating seat 74 on the corresponding side of the third mounting plate 71. A rotating disk 75 is rotatably mounted on the rotating seat 74. One end of the rotating disk 75 is hinged to the output end of the fifth telescopic device 710 through a fisheye bearing 77. A shim 73 is provided between the fifth telescopic device 710 and the third mounting plate 71. The fixed end of the fifth telescopic device 710 is hinged to the top of the shim 73 through a second hinge 76. The bottom of the shim 73 is fixed to the third mounting plate 71. The shim 73 is designed to facilitate hinge connection and allow the fifth telescopic device 710 to reach the appropriate height. It can be hinged to one end of the rotating disk 75 via the fisheye bearing 77 to ensure linkage transmission. The folding roller 79 is located radially on the rotating seat 74, and its sidewall is fixedly connected to the other end of the rotating disk 75 via the arc-shaped connecting plate 78. The opening of the arc-shaped connecting plate 78 is close to the folding side. The arc-shaped connecting plate 78 ensures that the hinge is not touched by anything other than the folding roller 79, preventing other parts of the hinge from being folded excessively and affecting the sealing effect. Even if the hinge has an excess part, it can be located within the opening of the arc-shaped connecting plate 78 and will not be affected.

[0028] During use, when the fifth telescopic device 710 extends, it drives the turntable 75 to rotate in the forward direction. The folding roller 79 moves in a circle around the center of the turntable 75. During the process, the folding roller 79 first rotates out of the arc groove 72 and contacts the outer side of the hinge. Then, in the subsequent process, the folding roller 79 always stays close to the hinge and gradually moves towards the inner side of the hinge. The hinge is also pressed by the folding roller 79 during the rotation and is folded. Finally, the line connecting the center of the folding roller 79 and the rotation center is perpendicular to the third mounting plate 71. At this time, the hinge is completely folded to be flat with the box surface, ensuring that it is always in a limited position. After folding, it can also act as a limiting part to facilitate subsequent sealing. When returning to the initial position, the fifth telescopic device 710 retracts, causing the turntable 75 to rotate in the opposite direction. The folding roller 79 moves in a circle around the center of the turntable 75. The folding roller 79 eventually slides into the arc-shaped groove 72. The line connecting the center of the folding roller 79 and the rotation center is parallel to the third mounting plate 71, which facilitates the subsequent entry of the box.

[0029] Based on embodiment 7, as a more preferred embodiment 9, arc-shaped connecting plates 78 with different radii can be prepared according to the size of commonly used boxes, and the two ends of the arc-shaped connecting plates 78 are respectively connected to the folding roller 79 and the rotating disk 75 by fasteners. The corresponding arc-shaped connecting plates 78 can be replaced according to the size of the box to ensure smooth folding and improve the applicability of the device.

[0030] As a more preferred embodiment 10, the output end of the sealing device 8 is flush with the bottom surface of the folded carton. When the carton moves down, the bottom is sealed. When the bottom of the carton is not more than two-thirds sealed, the carton is always in contact with the folding roller 79 and the limiting plate 51. Before the sealing position can be completely stabilized, the folding roller 79 and the limiting plate 51 are always limited to ensure the stability of the sealing. When the sealing has been carried out to a certain extent, the hinge gap has been fixed by the tape to a sufficient length. Therefore, the sealing can continue in this state without limiting the position.

[0031] As a preferred embodiment 11, a method of using an automatic vertical opening and sealing machine for corrugated cartons, for automatically sealing the bottom of cartons using the aforementioned automatic vertical opening and sealing machine, includes the following steps: S1. Place the cardboard box: Stack the cardboard boxes on the movable lifting platform 21 of the lifting assembly 2, so that the cardboard boxes and the lifting space 13 are arranged concentrically and coaxially. The shorter side of the cardboard box is close to the folding space 12, and the hinges of the cardboard box to be folded are all located on the side close to the vertical folding assembly 6. S2, Pick up the carton: The movable lifting platform 21 rises until the top carton is sensed by the first carton sensing sensor 100. At this time, the control box 120 receives the sensing signal, brakes the movable lifting platform 21, and activates the first telescopic device 31 of the horizontal moving component 3, so that the slider 33 moves to the middle position of the shorter side of the carton board and brakes the first telescopic device 31. Activate the second telescopic device 42 of the adsorption component 4 to lower the first mounting plate 43 until the first carton sensing sensor 100 senses the first mounting plate 43, brake the second telescopic device 42 and connect the vacuum suction cup 44 for adsorption. After adsorption is completed, the second telescopic device 42 is activated and retracted until it returns to the initial position and brakes the second telescopic device 42. After the second telescopic device 42 is braked, the first telescopic device 31 is activated, causing the slider 33 to move to the initial position and braking the first telescopic device 31. S3, shaping the carton: After passing through S2, the carton opens slightly under the action of gravity, with the short side at the top and bottom and the upper side at both sides, but it is not regular. The control box 120 starts the third telescopic device 53 of the straightening component 5. During the synchronous movement of the straightening plate 54, the carton moves closer to the limiting plate 51, and after it outputs the specified length, it is braked, so that one side of the carton is in contact with the limiting plate 51 to complete the vertical position, while the other side opposite it also remains vertical under the limit of the straightening plate 54. At this time, the carton can still move up and down between the limiting plate 51 and the straightening plate 54. S4. Folding the upper and lower folds: After shaping, the vertical folding assembly 6 corresponds one-to-one with the upper and lower folds. The control box 120 starts the fourth telescopic device 62 of the vertical folding assembly 6. Under the pushing action, the folding plate 64 gradually overlaps with the outer wall of the corresponding fold. At the same time, under the continuous output action of the fourth telescopic device 62, the folding plate 64 pushes the corresponding fold into the carton to form a fold. After the output is completed, the folding is completed and the fourth telescopic device 62 is retracted to the initial position. S5. Folding the left and right flaps: After completing the top and bottom flaps, the control box 120 starts the fifth telescopic device 710 of the horizontal flap assembly 7 to output the specified length. The rotating disk 75 is driven to rotate synchronously through the fisheye bearing 77. The rotation of the rotating disk 75 causes the folding roller 79 to rotate out of the arc groove 72 and make a quarter-circle rotation. During the rotation, the folding roller 79 contacts the outer wall of the corresponding left and right flaps and presses the corresponding flaps to rotate inward towards the box. When the folding roller 79 reaches the final position, the left and right flaps are just completely folded above the top and bottom flaps and are flush with the bottom of the box. When it reaches the final position, the fifth telescopic device 710 brakes, so that the bottom of the box remains flush under the restriction of the folding roller 79. S6, bottom sealing: After the left and right folds are completed, the control box 120 starts the sealing device 8 and restarts the second telescopic device 42 of the adsorption component 4 to lower the carton. During the process, the carton is always limited by the folding roller 79, the limiting plate 51 and the straightening plate 54. The sealing device 8 applies glue to the center seam after the left and right folds are folded and seals the bottom. After the bottom sealing is completed, the carton continues to be lowered. S7. Feeding: Lower the carton until the second carton sensor 110 detects the bottom of the carton. After receiving the signal, the control box 120 stops lowering the carton, cancels the suction after the vacuum suction cup 44 is activated, and moves the second telescopic device 42 of the suction assembly 4 to its initial position. At the same time, the fifth telescopic device 710 and the third telescopic device 53 are controlled to restore the folding roller 79 and the straightening plate 54 to their initial positions. The sealed carton falls onto the discharge device 9. The control box 120 starts the discharge device 9 to send the carton out until the second carton sensor 110 can no longer detect the signal. Then, the discharge device 9 is braked, and S2~S7 are repeated until all the cartons are sealed.

[0032] As a more preferred embodiment 12, the first telescopic device 31, the second telescopic device 42, the third telescopic device 53, the fourth telescopic device 62, and the fifth telescopic device 710 can all be telescopic cylinders.

[0033] As a more preferred embodiment 13, the discharge device 9 can be a conveyor belt or a smooth flat plate, with a telescopic device at one end of the flat plate to push the box.

[0034] As a more preferred embodiment 14, the control box 120 is equipped with a programmable PLC controller, and the surface of the control box 120 is equipped with a control display screen to ensure the implementation of automatic control, while the control display screen facilitates setting and displaying the process.

Claims

1. An automatic vertical opening and sealing machine for corrugated cardboard boxes, comprising a perforated mounting frame and a sealing device, characterized in that: The bottom of the hollow mounting frame is a box-sealing space, the top of the box-sealing space has a box-folding space, and one side of the box-sealing space has a lifting space. The lifting space is equipped with a lifting component, and the bottom of the folding space is equipped with a first carton sensing sensor that senses the topmost carton stacked on top of the lifting component; The top of the folding space is equipped with a horizontal moving component. The moving end of the horizontal moving component is equipped with a retractable suction component. The suction component moves to the top of the lifting space and vacuum suctions the side wall of the top carton. There are straightening components on both sides of the suction component. The straightening components press against the side wall of the carton to straighten the position of the carton. The straightening assembly includes a limiting plate that is vertically installed at the top of the folding box space and extends vertically downward, a second mounting plate, and a third telescopic device. The output end of the third telescopic device passes through the second mounting plate and is provided with a straightening plate, which is parallel to the limiting plate. The folding space has retractable vertical folding components symmetrically arranged on the top and bottom sides, with the output end of the vertical folding components tilted towards the inside of the upright carton. The folding space is located between the vertical folding components and has a horizontal folding component. The output ends on both sides of the horizontal folding component are connected by a linkage to rotate in a quarter circle toward the carton. During the rotation, the output ends of the horizontal folding component contact the corresponding left and right folds and fold toward the inside of the carton. The horizontal folding assembly includes a horizontally arranged third mounting plate. Both the upper and lower sides of the third mounting plate are equipped with linkage transmission assemblies. The output end of each linkage transmission assembly is equipped with a vertically arranged folding roller. The folding roller rotates in a circular motion in the horizontal direction through the linkage transmission assembly. The third mounting plate is equipped with an arc-shaped groove corresponding to the movement of the folding roller. A sealing device is located directly below the horizontal folding assembly within the sealing space. Below the sealing device is a discharging device. A second carton sensing sensor is located on top of the discharging device, which senses the bottom of the carton after it is sealed. The output end of the sealing device is flush with the bottom surface of the folded carton. The bottom is sealed when the carton moves down, and the carton is always in contact with the folding roller and the limiting plate when the bottom of the carton is not more than two-thirds sealed. A control box is located on one side of the sealing space. The above-mentioned components, sealing device and discharging device are electrically connected to two sensors through the control box to form a linkage.

2. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 1, characterized in that, The lifting assembly includes a movable lifting platform.

3. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 2, characterized in that, The horizontal moving component includes a guide rail that extends from the top of the sealing space to the top of the lifting space. A slider is slidably mounted on the guide rail. One end of the guide rail is provided with a first telescopic device parallel to the guide rail. The output end of the first telescopic device is connected to the slider to form a linkage.

4. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 3, characterized in that, The adsorption assembly includes a fixed block fixed to one side of the slider. The top of the fixed block is provided with a second telescopic device. The output end of the second telescopic device extends vertically downward after passing through the fixed block. The end of the output end of the second telescopic device is provided with a first mounting plate. The first mounting plate is parallel to the side wall of the carton. The bottom of the first mounting plate is provided with several vacuum suction cups. After adsorption, the first mounting plate is located in the middle of the adsorbed side wall of the carton.

5. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 4, characterized in that, The limiting plate is perpendicular to the guide rail. The limiting plate is located on the side of the guide rail away from the carton. A second mounting plate extending vertically downward is provided on one side of the slider. The second mounting plate is directly opposite the limiting plate. A third telescopic device is provided on the side of the second mounting plate away from the limiting plate.

6. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 5, characterized in that, The vertical folding assembly includes a fixing bracket, which is respectively installed on the mounting brackets at the top and bottom of the folding box space. The fixed end of the fourth telescopic device is fixedly installed to the corresponding mounting bracket through the fixing bracket, and the fourth telescopic device is tilted towards the inside of the upright carton. The output end of the fourth telescopic device is hinged to the middle position of the folding plate through the first hinge. The folding plate can rotate around the first hinge until the side of the folding plate away from the first hinge is tightly pressed against the corresponding side fold.

7. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 6, characterized in that, The third mounting plate is located in the middle of the side of the mounting frame on the same side as the vertical hinge assembly, and both sides of the third mounting plate are fixedly engaged with the mounting frame on the corresponding side. The linkage transmission assembly corresponds one-to-one with the left and right hinges. In the initial position, the folding rollers on both sides are arranged outwards and embedded in the corresponding arc-shaped grooves. The line connecting the center of the folding roller and the rotation center is parallel to the third mounting plate. At the final position, the folding rollers on both sides rotate inward and remain tangent to the outer wall of the corresponding side fold until the line connecting the center of the folding roller and the center of rotation is perpendicular to the third mounting plate. At this point, the fold is completely folded flat with the box surface.

8. The automatic vertical opening and sealing machine for corrugated cardboard boxes according to claim 6, characterized in that, The linkage drive assembly is centrally symmetrically arranged about the point corresponding to the middle position of the third mounting plate and the carton in the vertical direction. Each linkage drive assembly includes a rotating seat on the corresponding side of the third mounting plate. A rotating disk is rotatably mounted on the rotating seat. One end of the rotating disk is hinged to the output end of the fifth telescopic device through a fisheye bearing. A shim is provided between the fifth telescopic device and the third mounting plate. The fixed end of the fifth telescopic device is hinged to the top of the shim through a second hinge. The bottom of the shim is fixedly engaged with the third mounting plate. The folding roller is located radially on the rotating seat, and the side wall of the folding roller is fixedly connected to the other end of the rotating disk through an arc-shaped connecting plate.

9. A method of using an automatic vertical opening and sealing machine for corrugated cardboard boxes, characterized in that... The automatic vertical opening and sealing machine for corrugated cartons as described in claim 8 is used to automatically seal the bottom of cartons vertically, comprising the following steps: S1. Place the carton: Stack the carton boards on the movable lifting platform of the lifting component, so that the carton boards and the lifting space are arranged concentrically and coaxially, with the shorter side of the carton board close to the folding space, and the hinges of the carton board to be folded are all located on the side close to the vertical folding component. S2, Pick up the carton: The movable lifting platform rises until the top carton is sensed by the first carton sensing sensor. At this time, the control box receives the sensing signal, brakes the movable lifting platform, and activates the first telescopic device of the horizontal moving component, so that the slider moves to the middle position of the shorter side of the carton board and brakes the first telescopic device. Activate the second telescopic device of the adsorption assembly to lower the first mounting plate until the first carton sensing sensor detects the first mounting plate. Then, brake the second telescopic device and connect the vacuum suction cup for adsorption. After adsorption is completed, the second telescopic device is activated and retracted until it returns to its initial position and brakes. After the second telescopic device is braked, the first telescopic device is activated, causing the slider to move to the initial position and then braking the first telescopic device. S3, Shaping the Carton: After passing through S2, the carton opens slightly under the action of gravity, with the short sides at the top and bottom and the upper sides at the sides, but it is not regular. The control box activates the third telescopic device of the straightening component. During the synchronous movement of the straightening plate, the carton moves closer to the limiting plate. After it outputs the specified length, it brakes, so that one side of the carton is in contact with the limiting plate and becomes vertical. The opposite side of the carton also remains vertical under the limit of the straightening plate. At this time, the carton can move up and down between the limiting plate and the straightening plate. S4. Folding the top and bottom flaps: After shaping, the vertical flap assembly corresponds one-to-one with the top and bottom flaps. The control box activates the fourth telescopic device of the vertical flap assembly. Under the pushing action, the flap plate gradually overlaps with the outer wall of the corresponding flap. At the same time, under the continuous output action of the fourth telescopic device, the flap plate pushes the corresponding flap into the carton to form a fold. After the output reaches the bottom, the folding is completed, and the fourth telescopic device retracts to the initial position. S5. Folding the left and right flaps: After completing the top and bottom flaps, the control box starts the fifth telescopic device of the horizontal flap assembly to output the specified length. The rotating disk rotates synchronously through the fisheye bearing. The rotation of the rotating disk causes the flap roller to rotate out of the arc groove and make a quarter circle rotation. During the rotation, the flap roller contacts the outer wall of the corresponding left and right flaps and presses the corresponding flaps to rotate inward towards the box. When the flap roller reaches the final position, the left and right flaps are completely folded above the top and bottom flaps and are flush with the bottom of the box. When it reaches the final position, the fifth telescopic device brakes, so that the bottom of the box remains flush under the restriction of the flap roller. S6. Sealing the bottom: After the left and right folds are completed, the control box starts the sealing device and restarts the second telescopic device of the adsorption component to lower the carton. During the process, the carton is always limited by the side walls through the folding roller, the limiting plate and the straightening plate. The sealing device applies glue to the center seam after the left and right folds are folded and seals the bottom. After the bottom is sealed, the carton continues to be lowered. S7. Feeding: Lower the carton until the second carton sensor detects the bottom of the carton. After receiving the signal, the control box stops lowering the carton, cancels the suction after the vacuum suction cup is activated, and moves the second telescopic device of the suction assembly to its initial position. At the same time, the fifth and third telescopic devices are controlled to restore the folding roller and the straightening plate to their initial positions. The sealed carton falls onto the discharge device. The control box starts the discharge device to send the carton out until the second carton sensor can no longer detect the signal. Then, the discharge device is stopped, and S2~S7 are repeated until all the cartons are sealed.

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