A cardboard box folding system and method

Abstract

This invention discloses a carton folding system and method. The system includes a frame; a feeding mechanism; a first conveying mechanism; a moving adsorption mechanism for unfolding a flat carton into a carton body with openings on the left and right sides; a first folding mechanism for pressing and folding the opposite first and second side plates on the right side of the unfolded carton body; a second folding mechanism for pressing and folding the opposite third and fourth side plates on the right side of the unfolded carton body; an end rolling mechanism for rolling and pressing the right end of the folded carton body; and a tape bonding mechanism for bonding tape to the right end of the folded carton body and cutting the bonded tape. This invention integrates the adsorption forming, folding, and tape sealing of the carton on the same production line, and the adsorption forming, folding, and tape sealing are performed automatically, greatly improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of folding box technology, and more specifically to a carton folding system and method. Background Technology

[0002] Cardboard boxes are the most widely used packaging products. Depending on the materials used, there are corrugated cardboard boxes, single-layer cardboard boxes, etc., and they come in various specifications and models.

[0003] Flat cardboard boxes need to be folded and unfolded to hold items, so devices for unfolding folded cardboard boxes have appeared on the market. However, currently, cardboard box folding is usually done manually, and after folding, each box needs to be fed into a tape bonding machine for sealing, which is inefficient.

[0004] Furthermore, after folding the side panels of the cardboard box, the side panels often warp up. If the cardboard box is sealed with tape directly at this time, the tape seal will not be secure due to the warping of the side panels.

[0005] In addition, for cardboard boxes to be filled with items, one end of the box needs to be folded, leaving the other end open to facilitate the filling of items. After the items are filled, the open end is then sealed. However, commercially available tape bonding machines can usually only seal the top of the box, forcing workers to place the box with the end to be sealed facing upwards and the open end facing downwards. After sealing, workers also need to flip the box over before they can put the items in, which is very inconvenient and inefficient. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low sealing efficiency of folded carton, unstable tape sealing due to the warping of the carton side panels, and the need for workers to flip the carton after sealing, thereby providing a carton folding system and method.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A cardboard box folding system, comprising:

[0009] frame;

[0010] The feeding mechanism, located at the front of the frame, is used to lift flat cartons;

[0011] The roller pressing mechanism is located at the discharge end of the feeding mechanism and is used to flatten the flat carton.

[0012] The first conveying mechanism is connected to the discharge port of the roller pressing mechanism and is set on the frame. The frame is divided into an adsorption area, a first folding area, a second folding area, an end roller pressing area, a tape bonding area and a box unloading port in sequence according to the conveying direction.

[0013] A movable adsorption mechanism is set in the adsorption area of ​​the frame. The movable adsorption mechanism moves to the position directly above the side panel of the flat cardboard box, and after rotating 90°, adsorbs the side panel of the flat cardboard box. Then, it drives the side panel of the flat cardboard box to rotate 90° in the opposite direction, so as to unfold the flat cardboard box into a cardboard box body with openings on the left and right sides.

[0014] The first folding mechanism is located in the first folding area of ​​the frame and is used to press and fold the opposite first and second side plates on the right side of the unfolded carton body.

[0015] The second folding mechanism is located in the second folding area of ​​the frame and is used to press and fold the opposite third and fourth side plates on the right side of the unfolded carton body so that the right end of the carton body is a closed end and the left end is an open end.

[0016] An end-rolling mechanism is located at the end-rolling area of ​​the frame. The rolling direction of the end-rolling mechanism is opposite to the conveying direction of the first conveying mechanism. The end-rolling mechanism is used to roll the right end of the folded carton body.

[0017] The tape bonding mechanism is located in the tape bonding area of ​​the frame. It is used to bond tape to the right end of the folded carton body and cut the bonded tape.

[0018] A material loading conveyor line is set at the rear end of the unloading port of the frame and below the unloading port; a baffle box is connected to the rear end of the unloading port. The top, bottom and rear end of the baffle box are open. An extension plate is provided on the baffle box along the conveying direction of the first conveying mechanism. The extension plate is connected to the unloading port and close to the left side of the unloading port, so that the right end of the carton that moves to this position will be flipped and fall first, and the end of the carton with adhesive tape will be flipped to the lower position.

[0019] The second conveying mechanism is located directly above the first conveying mechanism and at the rear end of the moving adsorption mechanism. The second conveying mechanism has several pushing plates. After the moving adsorption mechanism adsorbs the flat cardboard box into a cardboard box body, the pushing plates contact the front end face of the cardboard box body and, together with the first conveying mechanism, convey the cardboard box body.

[0020] The technical solution is further optimized, and the mobile adsorption mechanism includes:

[0021] Suction cup positioning frame;

[0022] At least one suction cup is positioned on the end face of the suction cup positioning frame;

[0023] The sliding frame is slidably mounted on the slide rail frame in the front-to-back direction;

[0024] A rotary motor, the output shaft of which is rotatably mounted on a sliding frame via a connecting shaft and extends out of the sliding frame to connect with a suction cup positioning frame, the rotary motor being used to drive the suction cup and the suction cup positioning frame to rotate;

[0025] The sliding frame drive cylinder has its piston rod end connected to the sliding frame. The sliding frame drive cylinder is used to drive the sliding frame to move back and forth on the slide rail frame.

[0026] The technical solution is further optimized, and the first folding mechanism includes:

[0027] A first actuating structure is used to fold the first side panel on the right end of the unfolded carton body; the first actuating structure includes a first cylinder, a first arc-shaped plate, a second arc-shaped plate, and a first actuating plate; the fixed end of the first cylinder is hinged to a first cylinder positioning plate, the first cylinder positioning plate is disposed on the side wall of the frame, and the piston rod end of the first cylinder is hinged to the middle of the first arc-shaped plate; one end of the first arc-shaped plate is hinged to the first fixed plate through a first hinge shaft, and the other end of the first arc-shaped plate is connected to the first actuating plate; one end of the second arc-shaped plate is hinged to the first fixed plate through a second hinge shaft, and the other end of the second arc-shaped plate is connected to the first actuating plate;

[0028] The second actuating structure is used to fold the second side panel on the right end of the unfolded carton body; the second actuating structure includes a second cylinder, a third arc-shaped plate, a fourth arc-shaped plate, and a second actuating plate; the fixed end of the second cylinder is hinged to the second cylinder positioning plate, and the second cylinder positioning plate is set on the side wall of the frame; the middle part of the third arc-shaped plate is hinged to the second fixed plate through a third hinge shaft, one end of the third arc-shaped plate is a movable end and is hinged to the piston rod end of the second cylinder, and the other end of the third arc-shaped plate is a fixed end and is connected to the second actuating plate; one end of the fourth arc-shaped plate is hinged to the second fixed plate through a fourth hinge shaft, and the other end of the fourth arc-shaped plate is connected to the second actuating plate.

[0029] The technical solution is further optimized, and the second folding mechanism includes:

[0030] The third actuation structure is used to press and fold the third side panel on the right end of the unfolded carton body; the third actuation structure includes a third cylinder, a third actuation plate, and a third actuation rod; the third cylinder is vertically arranged, the fixed end of the third cylinder is set on the side wall of the frame, and the piston rod end of the third cylinder is hinged to the middle of the third actuation plate; the upper end of the third actuation plate is rotatably set on the side wall of the frame through the third actuation rod.

[0031] The fourth actuation structure is used to press and fold the fourth side plate on the right end of the unfolded carton body; the fourth actuation structure includes a fourth cylinder, a fourth actuation plate, and a fourth actuation rod; the fourth cylinder is vertically arranged, the fixed end of the fourth cylinder is set on the side wall of the frame, and the piston rod end of the fourth cylinder is hinged to the middle of the fourth actuation plate; the lower end of the fourth actuation plate is rotatably set on the side wall of the frame through the fourth actuation rod.

[0032] The technical solution is further optimized, and the end roller pressing mechanism includes:

[0033] The drive shaft and driven shaft are vertically mounted on the frame.

[0034] The extrusion belt drive motor is connected to the drive shaft;

[0035] An extrusion belt is fitted onto the drive shaft and the driven shaft, with one side of the extrusion belt facing the first conveying mechanism and capable of flattening the end face of the carton body.

[0036] The technical solution is further optimized, and the tape bonding mechanism includes:

[0037] The tape release structure includes a tape feed roll, a fixed frame, a movable frame, tape winding rollers, a clamping plate, and a drive motor for the movable frame. The fixed frame is fixed to the machine frame, and the movable frame is mounted on the fixed frame. The movable frame is connected to the drive motor and rotates relative to the fixed frame under the drive of the drive motor, so as to drive the tape on the movable frame to move to one side of the carton when tape needs to be applied to the carton. Several tape winding rollers are respectively provided on the fixed frame and the movable frame, and the clamping plate is mounted on the movable frame. The tape feed roll is used to hold the tape roll, and the tape released from the tape roll passes sequentially around the tape winding rollers on the fixed frame and the movable frame before extending from the clamping plate to above the first conveying mechanism.

[0038] A tape cutting structure is located at the rear end of the tape release structure. The tape cutting structure includes a cutter fixing frame, a cutter, and a cutter drive motor. The cutter fixing frame is fixedly mounted on the frame, and the cutter is rotatably mounted on the cutter fixing frame. The cutter drive motor is connected to the cutter and is used to drive the cutter to rotate.

[0039] The technical solution is further optimized. The roller pressing mechanism includes several roller groups. Each roller group includes an upper roller and a lower roller. A flat carton transport space is formed between the upper roller and the lower roller. The upper roller and the lower roller are connected by a first gear and a second gear. The upper roller or the lower roller is connected to a roller drive motor.

[0040] To further optimize the technical solution, the frame is also equipped with a dustproof transparent glass cover.

[0041] A method for folding a cardboard box, the method being based on a cardboard box folding system, includes the following steps:

[0042] S1. The feeding mechanism lifts the flat carton to the position of the first conveying mechanism, and the roller pressing mechanism flattens the flat carton to ensure its flatness.

[0043] S2. The flat carton is conveyed by the first conveying mechanism;

[0044] S3. The moving adsorption mechanism moves to the position directly above the side panel of the flat cardboard box, and after rotating 90°, adsorbs the side panel of the flat cardboard box. The moving adsorption mechanism then moves in the same direction as the first conveying mechanism, causing the side panel of the flat cardboard box to rotate 90° in the opposite direction, unfolding the flat cardboard box into a cardboard box body with openings on the left and right sides.

[0045] After completing the unfolding of a flat cardboard box, the moving adsorption mechanism moves in the opposite direction to the first conveying mechanism, returns to its original position, and begins adsorption of the next flat cardboard box.

[0046] S4. The first folding mechanism presses and folds the opposite first and second side panels on the right side of the unfolded carton body;

[0047] S5. The second folding mechanism presses and folds the opposite third and fourth side plates on the right side of the unfolded carton body, so that the right side of the carton body is closed and the left side is open.

[0048] S6. The end roller pressing mechanism rolls the right end of the folded carton body;

[0049] S7. The tape bonding mechanism applies tape to the right end of the folded carton and cuts the bonded tape.

[0050] S8. The carton body with adhesive tape is output from the unloading port. Under the action of the extension plate, the right end of the carton body with adhesive tape is flipped and falls first, so that the end of the carton body with adhesive tape is flipped to the lower position, and the open end of the carton body is flipped to the upper position.

[0051] The technical solution of this invention has the following advantages:

[0052] 1. The present invention provides a carton folding system that integrates the adsorption forming, folding, and tape sealing of cartons on the same production line, and the adsorption forming, folding, and tape sealing of cartons are performed automatically, which greatly improves production efficiency.

[0053] The end roller pressing mechanism in this invention can flatten the folded end of the carton, ensuring the flatness of the carton body end face and effectively preventing the carton side panels from warping, thus making the side panels more firmly bonded with adhesive tape.

[0054] This invention combines the lifting, unfolding, and unloading of a flat cardboard box, allowing the tape-sealing mechanism to simultaneously seal the box with tape and automatically flip the sealed box so that the open end faces upwards. This significantly improves the production efficiency of the cardboard boxes and the efficiency of storing goods. The invention first lifts the flat cardboard box to a certain height and unfolds it so that the box is open on both sides. After tape is applied to the right end of the box, as it is conveyed to the unloading port, an extension plate causes the right end of the box to extend longer than the left end, causing the box to tilt to the right and fall. This flips the tape-sealed end of the box to the lower position, allowing the unsealed end to directly hold items.

[0055] 2. This invention provides a cardboard box folding system. When a flat cardboard box needs to be suctioned, the piston rod of the sliding frame drive cylinder retracts, causing the suction cup, suction cup positioning frame, and rotary motor to move a distance in the opposite direction to the conveying direction of the first conveying mechanism. The rotary motor causes the suction cup and suction cup positioning frame to rotate 90°, at which point the suction cup contacts the flat cardboard box and suctions it. Then, the piston rod of the sliding frame drive cylinder extends, causing the suction cup, suction cup positioning frame, and rotary motor to move in the same direction as the conveying direction of the first conveying mechanism. Simultaneously, the rotary motor causes the suction cup and suction cup positioning frame to rotate 90° in the opposite direction, thus unfolding the flat cardboard box into a box body. This invention ingeniously combines the suction, rotation, and movement of a flat cardboard box, enabling the box body to be opened like a human hand.

[0056] 3. The present invention provides a carton folding system in which the first actuating structure and the second actuating structure are symmetrically arranged. The first cylinder and the second cylinder operate simultaneously, which can simultaneously drive the first actuating plate and the second actuating plate to move in the horizontal direction, thereby pressing and folding the opposite first side plate and the second side plate on the right side of the unfolded carton body.

[0057] The third and fourth actuation structures are symmetrically arranged. The third and fourth cylinders operate simultaneously, driving the third actuation lever and the fourth actuation plate to move vertically, thereby pressing and folding the opposite third and fourth side plates on the right side of the unfolded carton.

[0058] 4. The present invention provides a carton folding system in which the compression band can contact the end face of the carton, thereby flattening the folded carton body and enabling the carton body to better maintain its folded state.

[0059] 5. The present invention provides a carton folding system in which, when the carton body is transported to the position of the tape release structure, the movable frame drive motor drives the movable frame to move to one side of the carton body, thereby firmly adhering the tape to the carton body, which can prevent the problem of insufficient adhesion caused by insufficient contact between the tape and the carton body. Attached Figure Description

[0060] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0061] Figure 1 This is a first-view structural diagram of a cardboard box folding system provided by the present invention;

[0062] Figure 2 This is a second-view structural diagram of a carton folding system provided by the present invention;

[0063] Figure 3 A schematic diagram of the moving adsorption mechanism of a carton folding system provided by the present invention;

[0064] Figure 4 A schematic diagram of the structure of the first folding mechanism of a carton folding system provided by the present invention;

[0065] Figure 5 This invention provides a schematic diagram of the structure of the second folding mechanism of a carton folding system.

[0066] Figure 6 This is a schematic diagram of the tape bonding mechanism of a carton folding system provided by the present invention when releasing the tape;

[0067] Figure 7 This is a schematic diagram of the tape bonding mechanism of a carton folding system provided by the present invention when the tape is not released;

[0068] Figure 8 This is a partial structural diagram of the tape release structure of a carton folding system provided by the present invention;

[0069] Figure 9 This invention provides a diagram showing the positional relationship between the extension plate and the unloading port of a carton folding system.

[0070] Figure label:

[0071] 1. Feeding mechanism,

[0072] 2. Roller pressing mechanism, 21. Upper pressure roller, 22. First gear, 23. Second gear, 24. Lower pressure roller;

[0073] 3. Moving adsorption mechanism; 31. Suction cup; 32. Suction cup positioning frame; 33. Rotary motor; 34. Sliding frame; 36. Slide rail frame body; 37. Sliding frame drive cylinder.

[0074] 4. First folding mechanism; 41. First actuating structure; 411. First cylinder; 412. First fixed plate; 413. First arc-shaped plate; 414. Second arc-shaped plate; 415. First hinge shaft; 416. Second hinge shaft; 417. First actuating plate; 42. Second actuating structure; 421. Second cylinder; 422. Second fixed plate; 423. Third arc-shaped plate; 424. Fourth arc-shaped plate; 425. Third hinge shaft; 426. Fourth hinge shaft; 427. Second actuating plate;

[0075] 5. Second folding mechanism; 51. Third toggle structure; 511. Third cylinder; 512. Third toggle plate; 513. Third toggle lever; 52. Fourth toggle structure; 521. Fourth cylinder; 522. Fourth toggle plate; 523. Fourth toggle lever.

[0076] 6. End roller pressing mechanism; 61. Extrusion belt;

[0077] 7. Tape bonding mechanism; 71. Tape release structure; 711. Tape unloading roll; 712. Tape; 713. Fixed frame; 714. Movable frame; 715. Tape winding roller; 716. Clamping plate; 717. Movable frame drive motor; 72. Tape cutting structure; 721. Cutter fixing frame; 722. Cutter; 723. Cutter drive motor.

[0078] 8. First conveying mechanism; 81. Unloading port;

[0079] 9. Loading conveyor line; 91. Extension plate; 92. Material retaining box;

[0080] 10. Second conveying mechanism; 101. Push plate. Detailed Implementation

[0081] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0082] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0083] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0084] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0085] Example 1

[0086] like Figures 1 to 9 A specific embodiment of a carton folding system shown includes a frame, a feeding mechanism 1, a roller pressing mechanism 2, a first conveying mechanism 8, a moving adsorption mechanism 3, a first folding mechanism 4, a second folding mechanism 5, an end roller pressing mechanism 6, a tape bonding mechanism 7, a loading conveyor line 9, and a second conveying mechanism 10.

[0087] The feeding mechanism 1 is located at the front end of the frame and is used to lift flat cartons.

[0088] The roller pressing mechanism 2 is located at the discharge port end of the feeding mechanism 1 and is used to flatten the flat carton.

[0089] The first conveying mechanism 8 is connected to the discharge port of the roller pressing mechanism 2 and is set on the frame. The frame is divided into an adsorption area, a first folding area, a second folding area, an end roller pressing area, a tape bonding area and a box unloading port 81 in sequence according to the conveying direction.

[0090] The movable adsorption mechanism 3 is set in the adsorption area of ​​the frame. The movable adsorption mechanism 3 moves to the position directly above the side panel of the flat carton, and after rotating 90°, it adsorbs the side panel of the flat carton. Then, it drives the side panel of the flat carton to rotate 90° in the opposite direction, so as to unfold the flat carton into a carton body with openings on the left and right sides.

[0091] The first folding mechanism 4 is located in the first folding area of ​​the frame and is used to press and fold the opposite first and second side plates on the right side of the unfolded carton body.

[0092] The second folding mechanism 5 is located in the second folding area of ​​the frame and is used to press and fold the opposite third and fourth side plates on the right side of the unfolded carton body so that the right end of the carton body is a closed end and the left end is an open end.

[0093] The end roller pressing mechanism 6 is located at the end roller pressing area of ​​the frame. The roller pressing direction of the end roller pressing mechanism is opposite to the conveying direction of the first conveying mechanism 8. The end roller pressing mechanism is used to press the right end of the folded carton body.

[0094] The tape bonding mechanism 7 is located in the tape bonding area of ​​the frame and is used to bond the tape to the right end of the folded carton body and cut the bonded tape 712.

[0095] The loading conveyor line 9 is located at the rear end of the unloading port 81 of the frame and below the unloading port 81. A baffle box 92 is connected to the rear end of the unloading port 81. The top, bottom and rear end of the baffle box 92 are open. An extension plate 91 is provided on the baffle box 92 along the conveying direction of the first conveying mechanism. The extension plate 91 is connected to the unloading port 81 and close to the left side of the unloading port 81, so that the right end of the carton body that moves to this position will be flipped and fall first, and the end of the carton body with adhesive tape will be flipped to the lower position.

[0096] The second conveying mechanism 10 is located directly above the first conveying mechanism 8 and at the rear end of the moving adsorption mechanism 3. The second conveying mechanism 10 has several push plates 101. After the moving adsorption mechanism 3 adsorbs the flat cardboard box into a cardboard box body, the push plates 101 contact the front end face of the cardboard box body and, together with the first conveying mechanism 8, convey the cardboard box body.

[0097] The aforementioned carton folding system integrates the adsorption forming, folding, and tape sealing of the carton on the same production line, and the adsorption forming, folding, and tape sealing of the carton are carried out automatically, which greatly improves production efficiency.

[0098] The end roller pressing mechanism 6 in this embodiment can flatten the folded end of the carton, ensuring the flatness of the carton body end face and effectively preventing the carton side panels from warping, thus making the side panels more firmly bonded with adhesive tape.

[0099] This embodiment combines the lifting, unfolding, and unloading of the flat cardboard box, allowing the tape-sealing mechanism 7 to simultaneously seal the box with tape and automatically flip the sealed box so that the open end faces upwards, greatly improving the production efficiency and the efficiency of the contents. In this embodiment, the flat cardboard box is first lifted to a certain height and unfolded so that the box is open on both sides. After tape is applied to the right end of the box, as it is conveyed to the unloading port 81, the extended plate 91 causes the right end of the box to extend longer than the left end, causing the box to tilt to the right and fall. This flips the tape-sealed end of the box to the lower position, allowing the unsealed end to directly hold the contents.

[0100] In some embodiments, the roller pressing mechanism 2 includes several roller groups, each roller group including an upper roller 21 and a lower roller 24, forming a flat carton transport space between the upper roller and the lower roller, and the upper roller and the lower roller are connected by a first gear 22 and a second gear 23, and the upper roller or the lower roller is connected to a roller drive motor.

[0101] In some embodiments, the movable adsorption mechanism includes a suction cup positioning frame 32, a suction cup 31, a sliding frame 34, a rotary motor 33, and a sliding frame drive cylinder 37. At least one suction cup 31 is provided and positioned on the end face of the suction cup positioning frame 32. The suction cup 31 is connected to a vacuum system, and the operating state of the suction cup is controlled by the vacuum system. The sliding frame 34 is slidably mounted on the slide rail frame 36 in a front-to-back direction. The output shaft of the rotary motor 33 is rotatably mounted on the sliding frame 34 via a connecting shaft and extends out of the sliding frame 34 to connect with the suction cup positioning frame 32. The rotary motor 33 drives the suction cup 31 and the suction cup positioning frame 32 to rotate. The piston rod end of the sliding frame drive cylinder 37 is connected to the sliding frame 34, and the sliding frame drive cylinder 37 drives the sliding frame 34 to reciprocate back and forth on the slide rail frame 36.

[0102] In this embodiment, when it is necessary to adsorb a flat cardboard box, the piston rod of the sliding frame drive cylinder 37 retracts, causing the suction cup 31, suction cup positioning frame 32, and rotary motor 33 to move a distance in the opposite direction to the conveying direction of the first conveying mechanism 8. The rotary motor 33 causes the suction cup 31 and suction cup positioning frame 32 to rotate 90°, at which point the suction cup contacts the flat cardboard box and adsorbs it. Then, the piston rod of the sliding frame drive cylinder 37 extends, causing the suction cup 31, suction cup positioning frame 32, and rotary motor 33 to move in the same direction as the conveying direction of the first conveying mechanism 8. At the same time, the rotary motor 33 causes the suction cup 31 and suction cup positioning frame 32 to rotate 90° in the opposite direction, thereby unfolding the flat cardboard box into a cardboard box body. This embodiment ingeniously combines the adsorption, flipping, and movement of the flat cardboard box, realizing the opening of the cardboard box body as if by human hand.

[0103] In some embodiments, the first folding mechanism 4 includes a first actuating structure 41 and a second actuating structure 42.

[0104] The first actuating structure 41 is used to fold the first side panel on the right end of the unfolded carton body; the first actuating structure 41 includes a first cylinder 411, a first arc plate 413, a second arc plate 414 and a first actuating plate 417; the fixed end of the first cylinder 411 is hinged to the first cylinder positioning plate, the first cylinder positioning plate is set on the side wall of the frame, and the piston rod end of the first cylinder 411 is hinged to the middle of the first arc plate 413; one end of the first arc plate 413 is hinged to the first fixed plate 412 through the first hinge shaft 415, and the other end of the first arc plate 413 is connected to the first actuating plate 417; one end of the second arc plate 414 is hinged to the first fixed plate 412 through the second hinge shaft 416, and the other end of the second arc plate 414 is connected to the first actuating plate 417.

[0105] The second actuating structure 42 is used to fold the second side panel on the right end of the unfolded carton body; the second actuating structure 42 includes a second cylinder 421, a third arc plate 423, a fourth arc plate 424, and a second actuating plate 427; the fixed end of the second cylinder 421 is hinged to the second cylinder positioning plate, and the second cylinder positioning plate is set on the side wall of the frame; the middle part of the third arc plate 423 is hinged to the second fixed plate 422 through the third hinge shaft 425, one end of the third arc plate 423 is a movable end and is hinged to the piston rod end of the second cylinder 421, and the other end of the third arc plate 423 is a fixed end and is connected to the second actuating plate 427; one end of the fourth arc plate 424 is hinged to the second fixed plate 422 through the fourth hinge shaft 426, and the other end of the fourth arc plate 424 is connected to the second actuating plate 427.

[0106] In this embodiment, the first actuating structure 41 and the second actuating structure 42 are symmetrically arranged. The first cylinder 411 and the second cylinder 421 operate simultaneously, which can simultaneously drive the first actuating plate 417 and the second actuating plate 427 to move in the horizontal direction, thereby pressing and folding the opposite first side plate and second side plate on the right end of the unfolded carton body.

[0107] In some embodiments, the second folding mechanism 5 includes a third actuating structure 51 and a fourth actuating structure 52.

[0108] The third actuation structure 51 is used to press and fold the third side plate on the right end of the unfolded carton body; the third actuation structure 51 includes a third cylinder 511, a third actuation plate 512 and a third actuation rod 513; the third cylinder 511 is arranged vertically, the fixed end of the third cylinder 511 is arranged on the side wall of the frame, and the piston rod end of the third cylinder 511 is hinged to the middle of the third actuation plate 512; the upper end of the third actuation plate 512 is rotatably arranged on the side wall of the frame through the third actuation rod 513.

[0109] The fourth actuation structure 52 is used to press and fold the fourth side plate on the right end of the unfolded carton body; the fourth actuation structure 52 includes a fourth cylinder 521, a fourth actuation plate 522 and a fourth actuation rod 523; the fourth cylinder 521 is vertically arranged, the fixed end of the fourth cylinder 521 is set on the side wall of the frame, and the piston rod end of the fourth cylinder 521 is hinged to the middle of the fourth actuation plate 522; the lower end of the fourth actuation plate 522 is rotatably set on the side wall of the frame through the fourth actuation rod 523.

[0110] In this embodiment, the third actuation structure 51 and the fourth actuation structure 52 are symmetrically arranged. The third cylinder 511 and the fourth cylinder 521 operate simultaneously, which can simultaneously drive the third actuation rod 513 and the fourth actuation plate 522 to move in the vertical direction, thereby pressing and folding the opposite third side plate and fourth side plate on the right end of the unfolded carton body.

[0111] In some embodiments, the end roller pressing mechanism 6 includes a drive shaft, a driven shaft, a pressing belt drive motor, and a pressing belt 61. The drive shaft and the driven shaft are respectively vertically arranged on the frame; the pressing belt drive motor is connected to the drive shaft; the pressing belt 61 is sleeved on the drive shaft and the driven shaft, with one side of the pressing belt 61 facing the first conveying mechanism 8 and capable of flattening the end face of the carton body.

[0112] In this embodiment, the compression band 61 can contact the end face of the carton, thereby flattening the folded carton body and allowing the carton body to better maintain its folded state.

[0113] In some embodiments, the tape bonding mechanism 7 includes a tape release structure 71 and a tape cutting structure 72.

[0114] The tape release structure 71 includes a tape feeding roll 711, a fixed frame 713, a movable frame 714, a tape winding roller 715, a clamping plate 716, and a movable frame drive motor 717. The fixed frame 713 is fixed to the machine frame, and the movable frame 714 is mounted on the fixed frame 713. The movable frame 714 is connected to the movable frame drive motor 717 and rotates relative to the fixed frame 713 under the drive of the movable frame drive motor 717, so as to release the carton body as needed. When applying adhesive tape, the tape on the movable frame is driven to move towards one side of the carton body; several tape winding rollers 715 are respectively provided on the fixed frame 713 and the movable frame 714, and the clamping plate 716 is provided on the movable frame 714; the tape unloading roll 711 is used to hold the tape roll, and the tape 712 released from the tape roll passes through the tape winding rollers 715 on the fixed frame 713 and the movable frame 714 in sequence and then extends from the clamping plate 716 to above the first conveying mechanism 8.

[0115] In this embodiment, when the carton body is conveyed to the position of the tape release structure 71, the movable frame drive motor 717 drives the movable frame 714 to move to one side of the carton body, thereby firmly adhering the tape to the carton body. This prevents insufficient adhesion caused by insufficient contact between the tape and the carton body. Furthermore, multiple tape release rolls 711 can be provided in this embodiment, so that after the tape on one tape release roll 711 is exhausted, tape can be quickly released from another tape release roll 711.

[0116] The tape cutting structure 72 is located at the rear end of the tape release structure 71. The tape cutting structure 72 includes a cutter fixing frame 721, a cutter 722 and a cutter drive motor 723. The cutter fixing frame 721 is fixedly mounted on the frame. The cutter 722 is rotatably mounted on the cutter fixing frame 721. The cutter drive motor 723 is connected to the cutter 722 and is used to drive the cutter 722 to rotate.

[0117] In this embodiment, after the carton body is bonded with tape, the cutter drive motor 723 drives the cutter 722 to rotate and cut the tape. The structure is simple and very convenient.

[0118] In some embodiments, the front end of the feeding mechanism 1 is further provided with a stacking mechanism for stacking single-piece flat cardboard boxes into a stack. During the stacking of single-piece flat cardboard boxes, if the orientation of the stacked boxes is incorrect—that is, if the fold lines on the boxes are parallel to the first conveying mechanism 8—the moving suction mechanism 3 will be unable to unfold the boxes. To solve this technical problem, a single-piece flat cardboard box status detection mechanism is also provided at the front end of the stacking mechanism. This mechanism detects the position of the fold lines between the side panels of the single-piece flat cardboard box, ensuring that the fold lines between the side panels are perpendicular to the conveying direction of the first conveying mechanism 8, thus preventing the boxes from failing to unfold.

[0119] The status detection mechanism includes a camera and a computer. The camera is used to take pictures of the single-piece flat cardboard box. The computer receives the image information from the camera and compares it with preset information, wherein the fold line between the side panels of the single-piece flat cardboard box in the preset information is perpendicular to the conveying direction of the first conveying mechanism 8. If the image information matches the preset information, it indicates that the cardboard box is placed correctly; if the image information does not match the preset information, it indicates that the cardboard box is placed incorrectly and its position needs to be adjusted.

[0120] To prevent dust from the workshop from falling onto the cardboard boxes, the outside of the machine frame is also equipped with a dustproof transparent glass cover.

[0121] Example 2

[0122] This embodiment discloses a carton folding method, which is based on the carton folding system of Embodiment 1 and includes the following steps:

[0123] S1. The feeding mechanism 1 is used to lift the flat carton to the position of the first conveying mechanism 8, and the roller pressing mechanism 2 is used to flatten the flat carton to ensure the flatness of the flat carton.

[0124] S2. The flat carton is conveyed by the first conveying mechanism 8.

[0125] S3. The moving adsorption mechanism 3 moves to a position directly above the side panel of the flat cardboard box, and after rotating 90°, adsorbs the side panel of the flat cardboard box. The moving adsorption mechanism 3 then moves in the same direction as the first conveying mechanism 8, causing the side panel of the flat cardboard box to rotate 90° in the opposite direction, unfolding the flat cardboard box into a cardboard box body with openings on the left and right sides.

[0126] After unfolding a flat cardboard box, the moving adsorption mechanism 3 moves in the opposite direction to the first conveying mechanism 8, returns to its original position, and begins adsorption of the next flat cardboard box.

[0127] S4. The first folding mechanism 4 presses and folds the opposite first and second side panels on the right side of the unfolded carton body.

[0128] S5. The second folding mechanism 5 presses and folds the opposite third and fourth side plates on the right side of the unfolded carton body, so that the right end of the carton body is closed and the left end is open.

[0129] S6. The end roller pressing mechanism 6 rolls the right end of the folded carton body.

[0130] S7. Tape bonding mechanism 7: Tape is bonded to the right end of the folded carton body, and the bonded tape is cut.

[0131] S8. The carton body with adhesive tape is output from the unloading port 81. Under the action of the extension plate 91, the right end of the carton body with adhesive tape is flipped and falls first, so that the end of the carton body with adhesive tape is flipped to the lower position, and the open end of the carton body is flipped to the upper position.

[0132] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A cardboard box folding system, characterized in that, include: frame; The feeding mechanism (1) is located at the front end of the frame and is used to lift the flat carton; Roller pressing mechanism (2) is set at the discharge port end of feeding mechanism (1) and is used to flatten flat carton; The first conveying mechanism (8) is connected to the discharge port of the roller pressing mechanism (2) and is set on the frame. The frame is divided into an adsorption area, a first folding area, a second folding area, an end roller pressing area, a tape bonding area and a box unloading port (81) in sequence according to the conveying direction. The mobile adsorption mechanism (3) is set in the adsorption area of ​​the frame. The mobile adsorption mechanism (3) moves to the position directly above the side plate of the flat carton and adsorbs the side plate of the flat carton after rotating 90°. Then it drives the side plate of the flat carton to rotate 90° in the opposite direction so as to unfold the flat carton into a carton body with openings on the left and right sides. The first folding mechanism (4) is set in the first folding area of ​​the frame and is used to press and fold the opposite first side plate and second side plate on the right side of the unfolded carton body. The second folding mechanism (5) is set in the second folding area of ​​the frame and is used to press and fold the opposite third and fourth side plates on the right side of the unfolded carton body so that the right side of the carton body is a closed end and the left side is an open end. An end roller pressing mechanism (6) is set at the end roller pressing area of ​​the frame. The roller pressing direction of the end roller pressing mechanism (6) is opposite to the conveying direction of the first conveying mechanism (8). The end roller pressing mechanism (6) is used to press the right end of the folded carton body. The tape bonding mechanism (7) is set in the tape bonding area of ​​the frame and is used to bond the tape to the right end of the folded carton body and cut the bonded tape. The loading conveyor line (9) is set at the rear end of the unloading port (81) of the frame and located below the unloading port (81); a baffle box (92) is connected to the rear end of the unloading port (81). The top, bottom and rear end of the baffle box (92) are open. An extension plate (91) is provided on the baffle box (92) along the conveying direction of the first conveying mechanism. The extension plate (91) is connected to the unloading port (81) and close to the left side of the unloading port (81) so that the right end of the carton body that moves to this position will be flipped and fall first, and the end of the carton body with adhesive tape will be flipped to the lower position. The second conveying mechanism (10) is located directly above the first conveying mechanism (8) and at the rear end of the moving adsorption mechanism (3). The second conveying mechanism (10) has several push plates (101). After the moving adsorption mechanism (3) adsorbs the flat cardboard box into a cardboard box body, the push plates (101) contact the front end face of the cardboard box body and, together with the first conveying mechanism (8), convey the cardboard box body. The end roller pressing mechanism (6) includes: The drive shaft and driven shaft are vertically mounted on the frame. The extrusion belt drive motor is connected to the drive shaft; An extrusion belt (61) is fitted on the drive shaft and the driven shaft. One side of the extrusion belt (61) faces the first conveying mechanism (8) and can flatten the end face of the carton body.

2. The carton folding system according to claim 1, characterized in that, The mobile adsorption mechanism (3) includes: Suction cup positioning frame (32); At least one suction cup (31) is positioned on the end face of the suction cup positioning frame (32); The sliding frame (34) is slidably mounted on the slide rail frame (36) in the front-to-back direction; Rotary motor (33), whose output shaft rotates via a connecting shaft. The rotary motor (33) is set on the sliding frame (34) and extends out from the sliding frame (34) to connect with the suction cup positioning frame (32). The rotary motor (33) is used to drive the suction cup (31) and the suction cup positioning frame (32) to rotate. The sliding frame drive cylinder (37) has its piston rod end connected to the sliding frame (34). The sliding frame drive cylinder (37) is used to drive the sliding frame (34) to move back and forth on the slide rail frame (36).

3. A carton folding system according to claim 1, characterized in that, The first folding mechanism (4) includes: The first actuating structure (41) is used to fold the first side panel on the right end of the unfolded carton body; the first actuating structure (41) includes a first cylinder (411), a first arc plate (413), a second arc plate (414) and a first actuating plate (417); the fixed end of the first cylinder (411) is hinged to the first cylinder positioning plate, the first cylinder positioning plate is set on the side wall of the frame, and the piston rod end of the first cylinder (411) is hinged to the middle of the first arc plate (413); one end of the first arc plate (413) is hinged to the first fixed plate (412) through the first hinge shaft (415), and the other end of the first arc plate (413) is connected to the first actuating plate (417); one end of the second arc plate (414) is hinged to the first fixed plate (412) through the second hinge shaft (416), and the other end of the second arc plate (414) is connected to the first actuating plate (417); The second actuating structure (42) is used to fold the second side panel on the right end of the unfolded carton body; the second actuating structure (42) includes a second cylinder (421), a third arc plate (423), a fourth arc plate (424), and a second actuating plate (427); the fixed end of the second cylinder (421) is hinged to the second cylinder positioning plate, and the second cylinder positioning plate is set on the side wall of the frame; the middle part of the third arc plate (423) is connected by a third hinge shaft (425). The third arc plate (423) is hinged to the second fixed plate (422). One end of the third arc plate (423) is a movable end and is hinged to the piston rod end of the second cylinder (421). The other end of the third arc plate (423) is a fixed end and is connected to the second actuating plate (427). One end of the fourth arc plate (424) is hinged to the second fixed plate (422) through the fourth hinge shaft (426). The other end of the fourth arc plate (424) is connected to the second actuating plate (427).

4. A carton folding system according to claim 1, characterized in that, The second folding mechanism (5) includes: The third actuation structure (51) is used to press and fold the third side plate on the right end of the unfolded carton body; the third actuation structure (51) includes a third cylinder (511), a third actuation plate (512) and a third actuation rod (513); the third cylinder (511) is arranged vertically, the fixed end of the third cylinder (511) is arranged on the side wall of the frame, and the piston rod end of the third cylinder (511) is hinged to the middle of the third actuation plate (512); the upper end of the third actuation plate (512) is rotatably arranged on the side wall of the frame through the third actuation rod (513); The fourth actuation structure (52) is used to press and fold the fourth side plate on the right end of the unfolded carton body; the fourth actuation structure (52) includes a fourth cylinder (521), a fourth actuation plate (522) and a fourth actuation rod (523); the fourth cylinder (521) is arranged vertically, the fixed end of the fourth cylinder (521) is arranged on the side wall of the frame, and the piston rod end of the fourth cylinder (521) is hinged to the middle of the fourth actuation plate (522); the lower end of the fourth actuation plate (522) is rotatably arranged on the side wall of the frame through the fourth actuation rod (523).

5. A carton folding system according to claim 1, characterized in that, The tape bonding mechanism (7) includes: The tape release structure (71) includes a tape release roll (711), a fixed frame (713), a movable frame (714), a tape winding roller (715), a clamping plate (716), and a movable frame drive motor (717). The fixed frame (713) is fixed to the machine frame, and the movable frame (714) is mounted on the fixed frame (713). The movable frame (714) is connected to the movable frame drive motor (717) and rotates relative to the fixed frame (713) under the drive of the movable frame drive motor (717) to release the tape from the carton. When adhesive tape needs to be applied, the tape on the movable frame is driven to move towards one side of the carton body; the fixed frame (713) and the movable frame (714) are respectively provided with a number of tape winding rollers (715), and the clamp (716) is provided on the movable frame (714); the tape unloading roll (711) is used to hold the tape roll, and the tape released from the tape roll passes through the tape winding rollers (715) on the fixed frame (713) and the movable frame (714) in sequence and then extends from the clamp (716) to above the first conveying mechanism (8); A tape cutting structure (72) is disposed at the rear end of the tape release structure (71). The tape cutting structure (72) includes a cutter fixing frame (721), a cutter (722), and a cutter drive motor (723). The cutter fixing frame (721) is fixedly disposed on the frame. The cutter (722) is rotatably disposed on the cutter fixing frame (721). The cutter drive motor (723) is connected to the cutter (722) and is used to drive the cutter (722) to rotate.

6. A carton folding system according to claim 1, characterized in that, The roller pressing mechanism (2) includes several roller groups. Each roller group includes an upper roller and a lower roller. A flat carton transport space is formed between the upper roller and the lower roller. The upper roller and the lower roller are connected by a first gear (22) and a second gear (23). The upper roller or the lower roller is connected to a roller drive motor.

7. A carton folding system according to claim 1, characterized in that, The frame is also equipped with a dustproof transparent glass cover.

8. A method for folding a cardboard box, characterized in that, The method is based on the carton folding system according to any one of claims 1-7, and includes the following steps: S1. The flat carton is lifted to the position of the first conveying mechanism (8) by the feeding mechanism (1), and the flat carton is flattened by the roller pressing mechanism (2) to ensure the flatness of the flat carton; S2. The flat carton is conveyed by the first conveying mechanism (8); S3. The moving adsorption mechanism (3) moves to the position directly above the side plate of the flat carton, and after rotating 90°, adsorbs the side plate of the flat carton. The moving adsorption mechanism (3) then moves in the same direction as the first conveying mechanism (8), causing the side plate of the flat carton to rotate 90° in the opposite direction, and unfolding the flat carton into a carton body with openings on the left and right sides. After completing the unfolding of a flat cardboard box, the moving adsorption mechanism (3) moves in the opposite direction to the first conveying mechanism (8) and returns to its original position to adsorb the next flat cardboard box. S4. The first folding mechanism (4) presses and folds the opposite first and second side panels on the right side of the unfolded carton body; S5. The second folding mechanism (5) presses and folds the opposite third and fourth side plates on the right side of the unfolded carton body, so that the right side of the carton body is a closed end and the left side is an open end. S6. End Roller Pressing Mechanism (6) rolls the right end of the folded carton body; S7. Tape bonding mechanism (7) The tape is bonded to the right end of the folded carton body and the bonded tape is cut off; S8. The carton body with adhesive tape is output from the unloading port (81). Under the action of the extension plate (91), the right end of the carton body with adhesive tape is flipped and falls first, so that the end of the carton body with adhesive tape is flipped to the lower position and the open end of the carton body is flipped to the upper position.

Images