Automatic vertical box opening and bottom sealing machine for corrugated box and using method of automatic vertical box opening and bottom sealing machine

Abstract

According to the automatic vertical box opening and bottom sealing machine for the corrugated box and the using method, after the automatic vertical box opening and bottom sealing machine moves to the initial position of the horizontal moving assembly, a box body is shaped to be in an approximately square state through the straightening assembly, and follow-up folding operation is facilitated; the output end of the vertical folding assembly is in contact with the corresponding upper and lower folds of the carton and is folded towards the interior of the carton after being stretched, and the output end of the horizontal folding assembly is in contact with the corresponding left and right folds of the carton and is folded towards the interior of the carton, so that the box bottom after folding is continuously limited and matched in the subsequent downward movement process, and glue sealing is facilitated; a limiting device and a pressing device do not need to be additionally arranged, a control box is arranged, and the lifting assembly, the horizontal moving assembly, the adsorption assembly, the straightening assembly, the vertical folding assembly, the horizontal folding assembly, the glue sealing device and the discharging device are electrically connected with a first carton induction sensor and a second carton induction sensor through the control box to form linkage. And automatic control is convenient to form.

Description

Technical Field

[0001] The invention relates to the technical field of box opening and bottom sealing equipment, in particular to an automatic vertical box opening and bottom sealing machine for corrugated paper boxes and a use method thereof. Background Art

[0002] A large number of bottom sealing and unpacking machines are required in drug production and packaging. In order to save space, vertical bottom sealing machines are usually used. Existing bottom sealing machines are shown in the patent number ZL201911283607.4, "A vertical carton automatic forming and bottom sealing machine using a needle punching method". Existing vertical bottom sealing machines have the following problems: 1. The detection device is set up for box sealing detection, but the overall self-control of the device is poor; 2. The device uses needle puncture during the opening and shaping process, which will more or less affect the box body, which does not meet the requirements of drug production and packaging. A non-destructive opening method and shaping device are needed; 3. Although it is vertical, it still uses a horizontal assembly line for layout and sealing. The overall device occupies a large area, is inconvenient to use, and has low vertical space utilization; 4. The feeding end of the device is integrated with the equipment, which is not convenient for feeding. The carton boards need to be fed into the device one by one by conveying. An additional feeding device is required, which further lengthens the device; 5. After folding, a shaping device needs to be set before sealing to ensure that the folded pages maintain the stability of the folded shape during sealing. Summary of the invention

[0003] The present invention provides an automatic vertical box opening and bottom sealing machine for corrugated paper boxes and a method for using the machine, aiming to solve the above-mentioned problems of poor self-control, the use of acupuncture affecting the overall structure of the box, large floor space and low vertical space utilization, inconvenient feeding and the need for an additional shaping device to ensure the stability of the folded shape before sealing.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: An automatic vertical box opening and bottom sealing machine for corrugated paper boxes comprises a hollow mounting frame and a sealing device, wherein the bottom of the hollow mounting frame is a box sealing space, the top of the box sealing space is provided with a box folding space, one side of the box sealing space is provided with a lifting space, and the top of the box folding space extends to above the lifting space; A lifting assembly is provided in the lifting space, a plurality of stacked cartons are provided on the top of the lifting assembly, and a first carton induction sensor is provided at the bottom of the box folding space to form an induction match with the topmost carton; A horizontal moving component is provided on the top of the box folding space, and a retractable adsorption component is provided on the moving end of the horizontal moving component. The adsorption component moves to the top of the lifting space to form a vacuum adsorption cooperation with one side wall of the top carton, and moves the carton to the box folding space. Straightening components are provided on both sides of the adsorption component, and the straightening components press the side walls of the carton to straighten the position of the carton; The upper and lower sides of the folding box space are symmetrically arranged with retractable vertical folding components, the vertical folding components are tilted toward the inside of the straightened carton, and the output end of the vertical folding component contacts the corresponding upper and lower folds of the carton after extension and folds toward the inside of the box; The folding box space is provided with a horizontal folding assembly between the vertical folding assemblies. The output ends of the horizontal folding assembly are linked by connecting rods to rotate toward the carton in a quarter circle. During the rotation, the output ends of the horizontal folding assembly contact the corresponding left and right folds of the carton and fold toward the inside of the box. A sealing device is provided in the sealing space directly below the horizontal folding assembly, a discharging device is provided directly below the sealing device, and a second carton induction sensor is provided on the top of the discharging device to form an induction match with the bottom of the carton after sealing; A control box is provided on one side of the carton sealing space, and a lifting component, a horizontal moving component, an adsorption component, a straightening component, a vertical folding component, a horizontal folding component, a sealing device and a discharging device are electrically connected to the first carton sensing sensor and the second carton sensing sensor through the control box to form a linkage.

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

[0006] More preferably, the horizontal moving assembly includes a guide rail extending from the top of the sealing space to above the lifting space, a slider is slidably mounted on the guide rail, a first telescopic device parallel to the guide rail is provided at one end of the guide rail, and an 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, a second telescopic device is provided on the top of the fixed block, an output end of the second telescopic device passes through the fixed block and extends vertically downward, a first mounting plate is provided at the end of the output end of the second telescopic device, the first mounting plate is parallel to the side wall of the carton, a plurality of vacuum suction cups are provided at the bottom of the first mounting plate, and after adsorption, the first mounting plate is located in the middle position of the adsorbed side wall of the carton.

[0008] Furthermore, the straightening assembly includes a limit plate vertically arranged on the top of the folding box space and extending vertically downward, and the limit plate is perpendicular to the guide rail, the limit plate is close to the side of the guide rail away from the carton, and a second mounting plate extending vertically downward is provided on one side of the slider, the second mounting plate is directly opposite to the limit plate, and a third telescopic device is provided on the side of the second mounting plate away from the limit plate, and the output end of the third telescopic device passes through the second mounting plate and is provided with a straightening plate, and the straightening plate is parallel to the limit plate.

[0009] Specifically, the vertical folding assembly includes fixed mounting parts, which are respectively arranged on mounting frames corresponding to the top and bottom of the folding box space. The fixed end of the fourth telescopic device is fixedly mounted on the corresponding mounting frame through the fixed mounting parts, and the fourth telescopic devices are all tilted to point to the inside of the straightened 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 folding plate is away from the side of the first hinge and is tightly attached to the corresponding side fold.

[0010] More specifically, the horizontal folding assembly includes a third mounting plate arranged horizontally, the third mounting plate is located in the middle position of the side of the mounting frame on the same side as the vertical folding assembly, and both sides of the third mounting plate are fixedly matched with the mounting frame on the corresponding side, the upper and lower sides of the third mounting plate are provided with connecting rod transmission assemblies, and the connecting rod transmission assemblies correspond to the left and right folding sheets one by one, and the output ends of the connecting rod transmission assemblies are provided with vertically arranged folding rollers, and the folding rollers rotate in a circle in the horizontal direction through the connecting rod transmission assemblies, and the third mounting plate is provided with arc grooves corresponding to the movement of the folding rollers; In the initial position, the folding rollers on both sides are arranged outwardly, and the folding rollers are embedded in the corresponding arc grooves, and 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 are always tangent to the outer wall of the corresponding side fold until the line connecting the center of the folding roller and the rotation center is perpendicular to the third mounting plate. At this time, the fold is completely folded to be flat with the box surface.

[0011] In detail, the connecting rod transmission assembly is arranged symmetrically in the vertical direction about the point corresponding to the third mounting plate and the middle position of the carton, and the connecting rod transmission assembly includes a rotating seat arranged on the corresponding side of the third mounting plate, and a rotating disk is concentrically and coaxially mounted on the rotating seat for rotation, one end of the rotating disk is hinged to the output end of the fifth telescopic device through a fisheye bearing, a pad 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 pad through a second hinge, the bottom of the pad is fixedly matched with the third mounting plate, the folding roller is located in the radial direction of 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] In more detail, the output end of the sealing device is flush with the bottom cover surface of the carton after folding, and the bottom is sealed when the carton moves downward, and when the bottom cover of the carton does not exceed two-thirds, the carton is always in contact with the folding roller and the limit plate.

[0013] A method for using an automatic vertical box opening and bottom sealing machine for corrugated paper boxes, using the automatic vertical box opening and bottom sealing machine for corrugated paper boxes to automatically seal the bottom of the paper boxes vertically, comprising the following steps: S1. Place cartons: stack the carton boards on the movable lifting platform of the lifting assembly, so that the carton boards are arranged concentrically and coaxially with the lifting space, the shorter sides of the carton boards are close to the folding space, and the pages to be folded of the carton boards are all located on the side close to the vertical folding assembly; S2, sucking 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, starts the first telescopic device of the horizontal moving component, moves the slider to the middle position of the shorter side of the carton board, and brakes the first telescopic device; The second telescopic device of the adsorption assembly is started to lower the first mounting plate until the first carton sensing sensor senses the first mounting plate, the second telescopic device is braked and connected to the vacuum suction cup for adsorption, and after the adsorption is completed, the second telescopic device is started and retracted until it returns to the initial position and brakes the second telescopic device; After the second telescopic device is braked, the first telescopic device is started to move the slider to the initial position, thereby braking the first telescopic device; S3, carton shaping: After passing through S2, the carton is slightly opened under the action of gravity, with the short sides on the top and bottom and the upper sides on both sides, but it is not regular. The control box starts the third telescopic device of the straightening component. During the synchronous movement of the straightening plate, the carton is moved closer to the limit plate, so that it outputs the specified length and then brakes, just so that one side of the carton is in contact with the limit plate to complete the verticality, and the other side opposite to it is also kept vertical under the limit of the straightening plate. At this time, the carton can still move up and down between the limit plate and the straightening plate; S4, folding the upper and lower folds: after shaping, the vertical folding assembly corresponds to the upper and lower folds one by one, and the control box starts the fourth telescopic device of the vertical folding assembly. The folding plate gradually overlaps with the outer wall of the corresponding fold under the pushing action. At the same time, under the continuous output action of the fourth telescopic device, the folding plate pushes the corresponding fold into the carton to form a fold. After the output is to the bottom, the folding is completed, and the fourth telescopic device is retracted to the initial position; S5, folding the left and right folds: after completing the upper and lower folds, the control box starts the fifth telescopic device of the horizontal folding assembly to output the specified length, and drives the rotating disk to rotate synchronously through the fisheye bearing. The rotating disk rotates to make the folding roller rotate out of the arc groove and make a quarter-circle rotation. During the rotation process, the folding roller contacts the outer wall of the corresponding left and right folds, pressing the corresponding folds to rotate toward the inside of the box. When the folding roller rotates to the final position, the left and right folds are just completely folded to the top of the upper and lower folds and remain flush with the bottom of the box. When it reaches the final position, the fifth telescopic device brakes to keep the bottom of the box flush under the restriction of the folding roller; S6, back sealing: After the left and right folding is completed, the control box starts the glue 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 folding roller, the limit plate and the straightening plate to the side wall. The glue sealing device glues the middle seam after folding the left and right folding pages to seal the back, and continues to lower after the back sealing is completed; S7, feeding: lower until the second carton sensing sensor senses the bottom of the carton at this time. After receiving the signal here, the control box stops lowering first, brakes the connection of the vacuum suction cup and cancels the adsorption, and moves the second telescopic device of the adsorption component to the initial position. At the same time, the fifth telescopic device and the third telescopic device are controlled respectively to restore the folding roller and the straightening plate to their initial positions. The carton with bottom sealing falls onto the discharging device, and the control box starts the discharging device to send the carton out until the second carton sensing sensor can no longer sense the signal, brakes the discharging device, and re-executes S2~S7 until all the cartons are bottom sealed.

[0014] Beneficial effects of the present invention: 1. The present invention uses two signal inductions. The feed signal is used to control the start of folding and back sealing. After the start, each process is carried out in sequence until the discharge signal is sensed. The discharge signal is used to discharge the material, resume each process and recycle until all cartons are back sealed. The self-control is high; 2. The present invention lifts the carton board by vacuum adsorption, and automatically opens the carton board by its own gravity, and finally reshapes the carton by straightening the components to ensure the shape of the carton when folding and sealing the back, while making full use of the properties of the carton board itself, and achieving a good opening effect; 3. The folding and back cover of the present invention are concentrated in the vertically arranged folding and sealing spaces. The device fully utilizes the vertical space, occupies less horizontal space, and also reduces the layout of the horizontal assembly line, avoiding excessive occupation of space and facilitating use; 4. The lifting assembly of the present invention is installed separately from the whole device, and can be moved and lifted, which is convenient for loading cartons. After loading, it can be moved into the lifting space; 5. After the folding is completed, the straightening assembly and the horizontal folding assembly of the present invention will continue to limit the carton, and there is no need to arrange an additional shaping device to maintain the folded shape. The arc-shaped connecting plate can also ensure the integrity of the folding during the folding process and ensure the effect of the bottom cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the present invention when sucking a carton; Figure 2 It is a schematic diagram of the present invention when shaping a carton; Figure 3 It is a schematic diagram of folding the upper and lower pages of the present invention; Figure 4 It is an enlarged schematic diagram of the horizontal folding assembly of the present invention; Figure 5 It is a schematic diagram of folding left and right hinges of the present invention; Figure 6 A schematic diagram of the back cover of the present invention; Figure 7 It is a schematic diagram of feeding of the present invention; Figure 8 It is a schematic diagram of the structures of the horizontal moving component, the adsorption component and the straightening component of the present invention; In the figure: 1. Hollow mounting frame; 11. Sealing space; 12. Folding space; 13. Lifting space; 2. Lifting assembly; 21. Movable lifting platform; 3. Horizontal moving assembly; 31. First telescopic device; 32. Guide rail; 33. Sliding block; 4. Adsorption assembly; 41. Fixing block; 42. Second telescopic device; 43. First mounting plate; 44. Vacuum suction cup; 5. Alignment assembly; 51. Limiting plate; 52. Second mounting plate; 53. Third telescopic device; 54. Alignment plate; 6. vertical folding assembly; 61. fixed mounting member; 62. fourth telescopic device; 63. first hinge member; 64. folding plate; 7. Horizontal folding assembly; 71. Third mounting plate; 72. Arc groove; 73. Heightening block; 74. Rotating seat; 75. Rotating plate; 76. Second hinge; 77. Fisheye bearing; 78. Arc connecting plate; 79. Folding roller; 710. Fifth telescopic device; 8. Sealing device; 9. Discharging device; 100. First carton induction sensor; 110. Second carton induction sensor; 120. Control box. DETAILED DESCRIPTION

[0016] As follows, embodiments are further described with reference to the accompanying drawings.

[0017] like Figure 1 to Figure 8As shown, as a preferred embodiment 1, an automatic vertical box opening and bottom sealing machine for corrugated paper boxes comprises a hollow mounting frame 1 and a sealing device 8, wherein the bottom of the hollow mounting frame 1 is a box sealing space 11, the top of the box sealing space 11 is provided with a box folding space 12, one side of the box sealing space 11 is provided with a lifting space 13, and the top of the box folding space 12 extends to above the lifting space 13; The lifting space 13 is provided with a lifting assembly 2, and a plurality of stacked cartons are arranged on the top of the lifting assembly 2. A first carton sensing sensor 100 is arranged at the bottom of the box folding space 12 to form a sensing match with the topmost carton; when the carton is lifted to be sensed by the first carton sensing sensor 100, the automatic bottom sealing process starts; A horizontal moving component 3 is provided on the top of the folding box space 12, and a retractable adsorption component 4 is provided on the moving end of the horizontal moving component 3. The adsorption component 4 moves to the top of the lifting space 13 to form a vacuum adsorption cooperation with one side wall of the top carton, and moves the carton to the folding box space 12. Straightening components 5 are provided on both sides of the adsorption component 4. The straightening components 5 press the side walls of the carton to straighten the position of the carton; the horizontal moving component 3 moves the adsorption component 4 to the set position, and the adsorption component 4 adsorbs and lifts the top carton. The carton board is automatically stretched open 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 box body to a nearly square state, which is convenient for subsequent folding operations; The folding box space 12 is symmetrically provided with retractable vertical folding components 6, which are tilted toward the inside of the straightened carton. After being extended, the output end of the vertical folding component 6 contacts the corresponding upper and lower folds of the carton and folds toward the inside of the carton; the upper and lower folds are performed first, and the left and right folds are convenient after the folds are folded; The folding box space 12 is provided with a horizontal folding assembly 7 between the vertical folding assemblies 6. The output ends of the horizontal folding assembly 7 are linked by a connecting rod to rotate toward the carton in a quarter circle. During the rotation, the output ends of the horizontal folding assembly 7 contact the corresponding left and right folds of the carton and fold toward the inside of the box, so that the bottom of the box after the folding is continuously limited and matched during the subsequent downward movement, which is convenient for sealing without the need for additional limiting devices and pressing devices. A sealing device 8 is provided in the sealing space 11, just below the horizontal folding assembly 7. A discharging device 9 is provided just below the sealing device 8. A second carton induction sensor 110 is provided on the top of the discharging device 9 to form an induction match with the bottom of the carton after the sealing. 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 bottom-sealed box body, so as to ensure that the box body has been bottom-sealed when it is sensed; after sensing this signal, the device transports the material with the bottom sealed out, and restores all devices to their initial positions and states, so as to start the cycle of bottom sealing the next box; A control box 120 is provided on one side of the box sealing space 11, and the lifting component 2, the horizontal moving component 3, the adsorption component 4, the straightening component 5, the vertical folding component 6, the horizontal folding component 7, the sealing device 8 and the discharging device 9 are electrically connected to the first carton induction sensor 100 and the second carton induction sensor 110 through the control box 120 to form a linkage. It is convenient to form automatic control, and the specific process refers to the use method embodiment.

[0018] As a more preferred embodiment 2, the lifting assembly 2 includes a movable lifting platform 21. It is convenient to move, and can be moved to another place to load carton sheets, and then moved to the lifting space 13, which is convenient for use. At the same time, after the movable lifting platform 21 is connected to the control box 120, it can be used for automatic control.

[0019] As a more preferred embodiment 3, the horizontal moving assembly 3 includes a guide rail 32, which extends from the top of the sealing space 11 to the top of the lifting space 13, and a slider 33 is slidably mounted on the guide rail 32. A first telescopic device 31 parallel to the guide rail 32 is provided at one end of the guide rail 32, and 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 movement, and the first telescopic device 31 provides a driving force. When in use, for convenience, the two end points 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 end point, it is just at the folding position, and when extended to the extended end point, it is just 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] As a more preferred embodiment 4, the adsorption assembly 4 includes a fixed block 41 fixed to one side of the slider 33, a second telescopic device 42 is provided on the top of the fixed block 41, the output end of the second telescopic device 42 passes through the fixed block 41 and extends vertically downward, 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, a plurality of 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 carton side wall, to ensure the stability of adsorption, and prevent 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, so as to provide a driving force for adsorbing and extracting the box body, and adsorb the carton board through the adsorption force of the vacuum suction cup 44.

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

[0022] As a more preferred embodiment 5, the straightening component 5 includes a limit plate 51 which is vertically arranged on the top of the folding box space 12 and extends vertically downward, and the limit plate 51 is perpendicular to the guide rail 32, the limit plate 51 is close to the side of the guide rail 32 away from the carton, and a second mounting plate 52 extending vertically downward is provided on one side of the slider 33, the second mounting plate 52 is directly opposite to the limit plate 51, and a third telescopic device 53 is provided on the side of the second mounting plate 52 away from the limit plate 51, and an output end of the third telescopic device 53 passes through the second mounting plate 52 and is provided with a straightening plate 54, and the straightening plate 54 is parallel to the limit plate 51. When the carton board is lifted after adsorption, because only one side wall is adsorbed, the carton board will droop downward with the side wall as the top under the action of gravity, thereby opening to form a not very square parallelogram, and the parallelogram box body 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 carton approaches to be flush with the limiting plate 51, and the other side of the carton is flush with the straightening plate 54. At this time, the carton is shaped to be close to a square and can be folded. The two sides of the carton are limited by the limiting plate 51 and the straightening plate 54, and the top side of the carton is limited by vacuum adsorption. The carton as a whole is almost in a relatively stable state, which is convenient for subsequent folding.

[0023] As a more preferred embodiment 6, the vertical folding assembly 6 includes a fixed mounting member 61, and the fixed mounting member 61 is respectively arranged on the corresponding mounting frames at the top and bottom of the folding box space 12. The fixed end of the fourth telescopic device 62 is fixedly mounted with the corresponding mounting frame through the fixed mounting member 61, and the fourth telescopic devices 62 are all tilted to point to the inside of the straightened carton. The output end of the fourth telescopic device 62 is hingedly mounted with the middle position of the folding plate 64 through the first hinge 63, and the folding plate 64 can rotate around the first hinge 63 until the folding plate 64 is away from the side of the first hinge 63 and is tightly attached to the corresponding side fold. The driving force is provided by the fourth telescopic device 62 to make the folding plate 64 extend obliquely toward the inside of the box. During the 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 stick to the corresponding side fold and make the corresponding side fold toward the inside of the box. When the output is to the bottom, the fold is completely folded into the box. At this time, even if the fourth telescopic device 62 is retracted, the fold is always in a 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 in the box.

[0024] On the basis of Example 6, as a more preferred Example 7, the fixed mounting part 61 can be a fixable hinged part with a bolt as the hinge axis. When the nuts on both sides of the bolt are tightened, the hinged part 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, which is convenient for adjustment to cartons of different sizes on the one hand, and on the other hand, when the folding distance exceeds the currently installed fourth telescopic device 62, it can be replaced with a new fourth telescopic device 62 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 to be 10° to 30°.

[0026] As a more preferred embodiment 8, the horizontal folding assembly 7 includes a third mounting plate 71 arranged horizontally, the third mounting plate 71 is located in the middle position 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 matched with the mounting frame on the corresponding side, the upper and lower sides of the third mounting plate 71 are provided with connecting rod transmission assemblies, and the connecting rod transmission assemblies correspond to the left and right folding sheets one by one, and the output end of the connecting rod transmission assembly is provided with a vertically arranged folding roller 79, the folding roller 79 performs a circular rotation in the horizontal direction through the connecting rod transmission assembly, and a quarter of the circular rotation can ensure that the folding roller 79 gradually approaches the folding sheet and finally adheres to the folding sheet, and the third mounting plate 71 is provided with an arc groove 72 corresponding to the movement of the folding roller 79; In the initial position, the folding rollers 79 on both sides are arranged outwardly, and the folding rollers 79 are embedded in the corresponding arc grooves 72, and the line connecting the center of the folding roller 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 are always 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 time, the fold is completely folded to be flush with the box surface to ensure that it is always limited. After folding is completed, it can also serve as a limiter to facilitate subsequent sealing.

[0027] The connecting rod transmission assembly is arranged symmetrically in the vertical direction about the point corresponding to the third mounting plate 71 and the middle position of the carton, so as to ensure the synchronous folding of the hinges on the left and right sides and avoid conflicts. The connecting rod transmission assembly includes a rotating seat 74 arranged on the corresponding side of the third mounting plate 71, and a rotating disk 75 is coaxially and 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 pad block 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 pad block 73 through a second hinge 76, and the bottom of the pad block 73 is fixed to the third mounting plate 71. The raised block 73 is convenient for articulation on the one hand, and for making the fifth telescopic device 710 reach a suitable height on the other hand. It can form an articulated linkage with one end of the rotating disk 75 through the fisheye bearing 77 to ensure the transmission of the connecting rod. The folding roller 79 is located in the radial direction of the rotating seat 74, and the side wall of the folding roller 79 is fixedly connected to the other end of the rotating disk 75 through an 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 can ensure that no part of the hinge other than the folding roller 79 touches the hinge, so as to avoid other parts of the hinge receiving excess folding that affects the sealing effect. Even if the hinge has an excess part, it can be located in the opening of the arc-shaped connecting plate 78 and will not be affected.

[0028] During use, when the fifth telescopic device 710 is extended, it drives the turntable 75 to rotate forward, and the folding roller 79 performs a circular motion around the middle 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 is always in close contact with the hinge and gradually moves to the inner side of the hinge. The hinge is also pressed by the folding roller 79 during the rotation process to be 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 to ensure that it is always limited. After the folding is completed, it can also serve as a limiter to facilitate the subsequent sealing. When restoring the initial position, the fifth telescopic device 710 contracts, driving the turntable 75 to rotate in the opposite direction, and the folding roller 79 performs a circular motion around the middle of the turntable 75. The folding roller 79 finally slides into the arc 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 is convenient for the subsequent box to enter.

[0029] On the basis of Example 7, as a more preferred Example 9, corresponding 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 rollers 79 and the rotating disk 75 through fasteners. The corresponding arc-shaped connecting plates 78 are 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 cover surface of the carton after folding, and the bottom is sealed when the carton moves downward, and when the bottom cover of the carton does not exceed two-thirds, the carton is always in contact with the folding roller 79 and the limiting plate 51, to ensure that 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, and when the sealing reaches a certain extent, the hinge gap has been fixed by the tape for a sufficient length, so that the sealing can continue in this form without limiting.

[0031] As a preferred embodiment 11, a method for using an automatic vertical box opening and bottom sealing machine for corrugated paper boxes is used to automatically seal the bottom of a paper box vertically using the automatic vertical box opening and bottom sealing machine for corrugated paper boxes, comprising the following steps: S1. Place cartons: stack carton boards on the movable lifting platform 21 of the lifting assembly 2, so that the carton boards are arranged concentrically and coaxially with the lifting space 13, the shorter sides of the carton boards are close to the folding space 12, and the pages to be folded of the carton boards are all located on the side close to the vertical folding assembly 6; S2, sucking the carton: the movable lifting platform 21 rises until the top carton is sensed by the first carton sensing sensor 100, at which time the control box 120 receives the sensing signal, brakes the movable lifting platform 21, starts the first telescopic device 31 of the horizontal moving assembly 3, moves the slider 33 to the middle position of the shorter side of the carton board, and brakes the first telescopic device 31; The second telescopic device 42 of the adsorption assembly 4 is started to lower the first mounting plate 43 until the first carton sensing sensor 100 senses the first mounting plate 43, the second telescopic device 42 is braked and connected to the vacuum suction cup 44 for adsorption, and after the adsorption is completed, the second telescopic device 42 is started and retracted until it returns to the initial position to brake the second telescopic device 42; After the second telescopic device 42 is braked, the first telescopic device 31 is started, so that the slider 33 moves to the initial position, and the first telescopic device 31 is braked; S3, carton shaping: after S2, the carton is slightly opened under the action of gravity, with the short sides on the top and bottom and the upper sides on both sides, but it is not regular. The control box 120 starts the third telescopic device 53 of the straightening assembly 5, and the straightening plate 54 moves synchronously to bring the carton closer to the limit plate 51, so that it outputs a specified length and then brakes, so that one side of the carton is just in contact with the limit plate 51 to complete verticality, and the other side opposite to it is also kept vertical under the limit of the straightening plate 54. At this time, the carton can still move up and down between the limit plate 51 and the straightening plate 54; S4, folding the upper and lower folds: after shaping, the vertical folding assembly 6 corresponds to the upper and lower folds one by one, and the control box 120 starts the fourth telescopic device 62 of the vertical folding assembly 6, and the folding plate 64 gradually overlaps with the outer wall of the corresponding fold under the pushing action. 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 inside of the carton to form a fold, and the folding is completed after the output is to the bottom, and the fourth telescopic device 62 is retracted to the initial position; S5, folding the left and right folds: after completing the upper and lower folds, the control box 120 starts the fifth telescopic device 710 of the horizontal folding assembly 7 to output the specified length, and drives the rotating disk 75 to rotate synchronously through the fisheye bearing 77. The rotating disk 75 rotates to make the folding roller 79 rotate out of the arc groove 72 to make a quarter-circle rotation. During the rotation process, the folding roller 79 contacts the outer wall of the corresponding left and right folds, pressing the corresponding folds to rotate toward the inside of the box. When the folding roller 79 rotates to the final position, the left and right folds are just completely folded to the top of the upper and lower folds and remain flush with the bottom of the box. When it rotates to the final position, the fifth telescopic device 710 brakes to keep the bottom of the box flush under the restriction of the folding roller 79. S6, back cover: after the left and right folding is completed, the control box 120 starts the glue sealing device 8 and restarts the second telescopic device 42 of the adsorption assembly 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 to the side wall. The glue sealing device 8 glues the middle seam after the left and right folding is completed and the carton is lowered again after the back cover is completed. S7, feeding: lowering until the second carton sensing sensor 110 senses the bottom of the carton at this time, and the control box 120 stops lowering after receiving the signal here, brakes the connection of the vacuum suction cup 44 and cancels the adsorption, and moves the second telescopic device 42 of the adsorption component 4 to the initial position, and at the same time controls the fifth telescopic device 710 and the third telescopic device 53 respectively to restore the folding roller 79 and the straightening plate 54 to their initial positions, and the carton with bottom sealing falls onto the discharging device 9, and the control box 120 starts the discharging device 9 to send the carton out until the second carton sensing sensor 110 senses no signal at all, brakes the discharging device 9, and re-executes S2~S7 until all cartons are bottom 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 use telescopic cylinders.

[0033] As a more preferred embodiment 13, the discharging device 9 can use a conveyor belt or a smooth flat plate, and a telescopic device is used at one end of the flat plate to push the box.

[0034] As a more preferred embodiment 14, the control box 120 is provided with a programmable PLC controller, and the surface of the control box 120 is provided with a control display screen to ensure the implementation of automatic control, while conveniently performing settings and displaying processes through the control display screen.

Claims

1. An automatic vertical box opening and bottom sealing machine for corrugated paper boxes, comprising a hollow 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 is provided with a box folding space, and one side of the box sealing space is provided with a lifting space; A lifting component is provided in the lifting space, and a first carton induction sensor is provided at the bottom of the box folding space to form an induction with the topmost carton stacked on the top of the lifting component; A horizontal moving component is provided at the top of the folding box space, and a retractable adsorption component is provided on the moving end of the horizontal moving component. The adsorption component moves to the top of the lifting space and vacuum adsorbs the side wall of one side of the top carton. Straightening components are provided on both sides of the adsorption component, and the straightening components press the side wall of the carton to straighten the position of the carton. Retractable vertical folding components are symmetrically arranged on the upper and lower sides of the folding box space, and the output ends of the vertical folding components are tilted toward the inside of the straightened carton; The folding box space is located between the vertical folding components and a horizontal folding component is provided. The output ends on both sides of the horizontal folding component are linked by a connecting rod to rotate toward the carton in a quarter circle. During the rotation process, the output ends of the horizontal folding component contact the corresponding left and right folds and fold toward the inside of the box. A sealing device is provided in the sealing space directly below the horizontal folding assembly, a discharging device is provided below the sealing device, and a second carton induction sensor is provided on the top of the discharging device to form an induction with the bottom of the carton after the bottom is sealed; A control box is provided on one side of the box sealing space, and the above-mentioned components, the sealing device and the discharging device are electrically connected to the two sensors through the control box to form a linkage.

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

3. The automatic vertical box opening and bottom sealing machine for corrugated paper boxes according to claim 2, characterized in that: The horizontal moving assembly includes a guide rail, which extends from the top of the sealing space to the top of the lifting space. A slider is slidably installed 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 box opening and bottom sealing machine for corrugated paper boxes according to claim 3, characterized in that: The adsorption assembly includes a fixed block fixed to one side of the slider, a second telescopic device is provided on the top of the fixed block, an output end of the second telescopic device passes through the fixed block and extends vertically downward, a first mounting plate is provided at the end of the output end of the second telescopic device, the first mounting plate is parallel to the side wall of the carton, a plurality of vacuum suction cups are provided at the bottom of the first mounting plate, and after adsorption, the first mounting plate is located in the middle position of the adsorbed side wall of the carton.

5. The automatic vertical box opening and bottom sealing machine for corrugated paper boxes according to claim 4, characterized in that: The straightening assembly includes a limit plate vertically arranged on the top of the folding box space and extending vertically downward, and the limit plate is perpendicular to the guide rail, the limit plate is close to 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 to the limit plate, a third telescopic device is provided on the side of the second mounting plate away from the limit plate, the output end of the third telescopic device passes through the second mounting plate and is provided with a straightening plate, and the straightening plate is parallel to the limit plate.

6. The automatic vertical box opening and bottom sealing machine for corrugated paper boxes according to claim 5, characterized in that: The vertical folding assembly includes fixed mounting parts, which are respectively arranged on mounting frames corresponding to the top and bottom of the folding box space. The fixed end of the fourth telescopic device is fixedly mounted on the corresponding mounting frame through the fixed mounting parts, and the fourth telescopic devices are all tilted to point to the inside of the straightened carton. The output end of the fourth telescopic device is hingedly mounted on the middle position of the folding plate through the first hinge. The folding plate can rotate around the first hinge until the folding plate is away from the side of the first hinge and is tightly attached to the corresponding side fold.

7. The automatic vertical box opening and bottom sealing machine for corrugated paper boxes according to claim 6, characterized in that: The horizontal folding assembly includes a third mounting plate arranged horizontally, the third mounting plate is located in the middle position of the side of the mounting frame on the same side as the vertical folding assembly, and both sides of the third mounting plate are fixedly matched with the mounting frame on the corresponding side, the upper and lower sides of the third mounting plate are provided with connecting rod transmission assemblies, and the connecting rod transmission assemblies correspond to the left and right folding sheets one by one, and the output ends of the connecting rod transmission assemblies are provided with vertically arranged folding rollers, and the folding rollers rotate in a circle in the horizontal direction through the connecting rod transmission assemblies, and the third mounting plate is provided with arc grooves corresponding to the activities of the folding rollers; In the initial position, the folding rollers on both sides are arranged outwardly, and the folding rollers are embedded in the corresponding arc grooves, and 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 are always tangent to the outer wall of the corresponding side fold until the line connecting the center of the folding roller and the rotation center is perpendicular to the third mounting plate. At this time, the fold is completely folded to be flat with the box surface.

8. The automatic vertical box opening and bottom sealing machine for corrugated paper boxes according to claim 6, characterized in that: The connecting rod transmission assembly is arranged symmetrically in the vertical direction about the point corresponding to the third mounting plate and the middle position of the carton, and the connecting rod transmission assembly includes a rotating seat arranged on the corresponding side of the third mounting plate, and a rotating disk is concentrically and coaxially mounted on the rotating seat for rotation, one end of the rotating disk is hinged to the output end of the fifth telescopic device through a fisheye bearing, a pad block 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 pad block through the second hinge, the bottom of the pad block is fixedly matched with the third mounting plate, the folding roller is located in the radial direction of 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. The automatic vertical box opening and bottom sealing machine for corrugated paper boxes according to claim 8, characterized in that: The output end of the sealing device is flush with the bottom sealing surface of the carton after folding. The bottom is sealed when the carton moves downward, and when the bottom sealing of the carton does not exceed two-thirds, the carton is always in contact with the folding roller and the limiting plate.

10. A method for using an automatic vertical box opening and bottom sealing machine for corrugated paper boxes, characterized in that: The method for automatically sealing the bottom of a corrugated box vertically by using the automatic vertical box opening and bottom sealing machine as claimed in claim 9 comprises the following steps: S1. Place cartons: stack the carton boards on the movable lifting platform of the lifting assembly, so that the carton boards are arranged concentrically and coaxially with the lifting space, the shorter sides of the carton boards are close to the folding space, and the pages to be folded of the carton boards are all located on the side close to the vertical folding assembly; S2, sucking 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, starts the first telescopic device of the horizontal moving component, moves the slider to the middle position of the shorter side of the carton board, and brakes the first telescopic device; The second telescopic device of the adsorption assembly is started to lower the first mounting plate until the first carton sensing sensor senses the first mounting plate, the second telescopic device is braked and connected to the vacuum suction cup for adsorption, and after the adsorption is completed, the second telescopic device is started and retracted until it returns to the initial position and brakes the second telescopic device; After the second telescopic device is braked, the first telescopic device is started to move the slider to the initial position, thereby braking the first telescopic device; S3, carton shaping: After passing through S2, the carton is slightly opened under the action of gravity, with the short sides on the top and bottom and the upper sides on both sides, but it is not regular. The control box starts the third telescopic device of the straightening component. During the synchronous movement of the straightening plate, the carton is moved closer to the limit plate, so that it outputs the specified length and then brakes, just so that one side of the carton is in contact with the limit plate to complete the verticality, and the other side opposite to it is also kept vertical under the limit of the straightening plate. At this time, the carton can still move up and down between the limit plate and the straightening plate; S4, folding the upper and lower folds: after shaping, the vertical folding assembly corresponds to the upper and lower folds one by one, and the control box starts the fourth telescopic device of the vertical folding assembly. The folding plate gradually overlaps with the outer wall of the corresponding fold under the pushing action. At the same time, under the continuous output action of the fourth telescopic device, the folding plate pushes the corresponding fold into the carton to form a fold. After the output is to the bottom, the folding is completed, and the fourth telescopic device is retracted to the initial position; S5, folding the left and right folds: after completing the upper and lower folds, the control box starts the fifth telescopic device of the horizontal folding assembly to output the specified length, and drives the rotating disk to rotate synchronously through the fisheye bearing. The rotating disk rotates to make the folding roller rotate out of the arc groove and make a quarter-circle rotation. During the rotation process, the folding roller contacts the outer wall of the corresponding left and right folds, pressing the corresponding folds to rotate toward the inside of the box. When the folding roller rotates to the final position, the left and right folds are just completely folded to the top of the upper and lower folds and remain flush with the bottom of the box. When it reaches the final position, the fifth telescopic device brakes to keep the bottom of the box flush under the restriction of the folding roller; S6, back sealing: After the left and right folding is completed, the control box starts the glue 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 folding roller, the limit plate and the straightening plate to the side wall. The glue sealing device glues the middle seam after folding the left and right folding pages to seal the back, and continues to lower after the back sealing is completed; S7, feeding: lower until the second carton sensing sensor senses the bottom of the carton at this time. After receiving the signal here, the control box stops lowering first, brakes the connection of the vacuum suction cup and cancels the adsorption, and moves the second telescopic device of the adsorption component to the initial position. At the same time, the fifth telescopic device and the third telescopic device are controlled respectively to restore the folding roller and the straightening plate to their initial positions. The carton with bottom sealing falls onto the discharging device, and the control box starts the discharging device to send the carton out until the second carton sensing sensor can no longer sense the signal, brakes the discharging device, and re-executes S2~S7 until all the cartons are bottom sealed.

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