Carton forming mechanism, carton forming machine and carton forming method for corrugated boards

Abstract

The invention discloses a carton forming mechanism, a carton forming machine and a carton forming method for corrugated boards. The carton forming mechanism comprises a rack, a sliding table, a first rotary table, a first suction cup, a second rotary table, a second suction cup, a board folding device, a bottom support and a guide rod. The carton forming machine comprises a carton forming mechanism, a paperboard storage mechanism is arranged on the feeding side of the rack and comprises a paperboard storage rail, a paperboard pushing plate and a linear driving assembly, the paperboard storage rail and the driving assembly are both installed on the rack, and the paperboard pushing plate is connected with the moving end of the driving assembly. The carton forming method using the carton forming mechanism for the corrugated boards sequentially comprises the steps of paper taking, carton opening, carton forming and resetting. The carton forming mechanism and the carton forming machine are simple in structure, the operation method is convenient, the functions of paper board preparation and storage, board taking, carton opening and carton leading-out are integrated, manual intervention is little, the automation degree is high, and high-speed operation can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of carton forming equipment, in particular to a carton forming mechanism, a carton forming machine and a carton forming method for corrugated paperboard. Background Art

[0002] Cartons are one of the main packaging products. For the printing industry, in order to make the printed products neat and clean, they are usually packaged in rotating cartons. With the increasing production volume, the efficiency of traditional manual folding of cardboard into cartons is too slow, and the choice of carton forming equipment has become the first trend. At present, most of the carton forming equipment on the market changes the angle of two adjacent faces of the carton board in the vertical state to form a "mouth"-shaped carton, and then folds the four bottom plates at the bottom of the cardboard to finally form an open carton that can be used for packaging.

[0003] For example, the Chinese invention patent with the authorization publication number CN113479401B and the name of a carton opening method of a vertical high-speed carton opening machine, and the Chinese utility model patent with the publication number CN214383429U and the name of a carton opening mechanism proposed in the prior art. They both use the above-mentioned carton opening method, but in terms of structure, for example: the angle control structure between the small-leaf suction cup assembly and the large-leaf suction cup assembly needs to rotate with the first connecting pin as the axis under the drive of the connecting rod, and the closed carton blank is pulled open into a "mouth" shape, and the angle edge of the "mouth"-shaped carton blank is required to be coaxial with the first connecting pin.

[0004] Therefore, when using the above-mentioned existing equipment, before each unpacking, it is necessary to adjust the position of the small-leaf suction cup assembly and the large-leaf suction cup assembly to grab the cardboard according to the specifications of the current carton. Not only is the structure of the unpacking components relatively complex, the use conditions are more restricted, and the program control and pre-operation of the equipment are also relatively cumbersome. In addition, the unpacking angle is limited by the stroke of the piston rod of the base translation system. The angle range between the small-leaf suction cup assembly and the large-leaf suction cup assembly varies to a certain extent. For some carton types that are not very "square", such as pentagonal, hexagonal and other carton shapes, the unpacking angle is too large, and the unpacking machine cannot meet the unpacking work. Summary of the invention

[0005] The object of the present invention is to provide a corrugated cardboard box-forming mechanism, a box-forming machine and a box-forming method, so as to solve the problems that the existing box-opening equipment has a complex structure, cumbersome operation, more restricted working conditions, a certain box-opening angle range and a small scope of application.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A corrugated cardboard box-forming mechanism comprises a frame, a slide, a first rotating table, a first suction cup, a second rotating table, a second suction cup, a plate folding device, a bottom support and a guide rod; The slide is driven by a motor and slidably mounted on the frame rail; The first turntable and the second turntable are coaxially arranged and rotatably mounted on the slide, and the first turntable and the second turntable are driven by motors respectively; The first suction cup and the second suction cup are respectively mounted on the first turntable and the second turntable through supporting arms, and an angle of 0-360° can be formed between the first suction cup and the second suction cup; The plate folding device is mounted on the supporting arm and is adapted to the first suction cup; The bottom bracket is mounted on the frame and is consistent with the forward direction of the slide; The guide rods are mounted on the frame and are located on both sides of the base, and the two guide rods gradually approach and increase in height along the advancing direction of the slide.

[0007] A further technical solution is: the plate folding device comprises a cylinder and a flap, the flap is rotatably mounted on the support arm, and two ends of the cylinder are rotatably connected to the support arm and the flap respectively.

[0008] A further technical solution is: proximity sensors respectively used for the first turntable and the second turntable are arranged on the slide.

[0009] A corrugated cardboard box-forming machine comprises a corrugated cardboard box-forming mechanism, a cardboard storage mechanism is arranged on the feeding side of the frame, the cardboard storage mechanism comprises a cardboard storage track, a cardboard pusher and a linear drive assembly, the cardboard storage track and the drive assembly are both mounted on the frame, and the cardboard pusher is connected to the moving end of the drive assembly.

[0010] A further technical solution is: the linear drive assembly includes a motor, a lead screw and a slider, the lead screw is arranged along the direction of the storage plate track and is rotatably installed on the frame, the motor drives the lead screw to rotate, the slider is slidably connected to the frame, and the slider is threadedly connected to the lead screw.

[0011] A further technical solution is that an anti-dropping block adapted to the paperboard is provided at the discharging end of the board storage track.

[0012] A further technical solution is: a paper box guide platform is arranged on the discharging side of the frame, and a belt conveyor is arranged on the inner side of the paper box guide platform.

[0013] A further technical solution is that a guide plate is provided at the feed end of the paper box guide platform.

[0014] A method for forming a box of corrugated cardboard uses a box forming mechanism for forming a box of corrugated cardboard and performs the following steps under the action of a controller: S1, take paper, the motor drives the first turntable and the second turntable to rotate, the first suction cup and the second suction cup are in the same plane, and move toward the paperboard on the slide, and the working surfaces of the first suction cup and the second suction cup are respectively attached to the two folded surfaces of the paperboard; S2, unpacking, the slide moves away from the cardboard, the motor drives the first turntable and the second turntable to rotate again, the angle between the first suction cup and the second suction cup is consistent with the angle after the carton is boxed, and the folding device at the second suction cup folds a bottom plate of the carton after unpacking, and the folded bottom plate avoids the bottom support; S3, the carton is formed, the slide moves further away from the cardboard, and after the carton is opened, the other three bottom plates of the carton are folded by the bottom support and two guide rods to obtain a carton with an upper opening; S4, reset, the first suction cup and the second suction cup are shut off and put down the carton, the slide table retreats, and the first turntable and the second turntable rotate in opposite directions and reset.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: The present invention provides a corrugated cardboard box-forming mechanism and a box-forming method, which have a simple structure and a convenient operation method. When unpacking, only two independently rotating turntables are needed to change the angles of two suction cups. The two turntables do not interfere with each other, and the rotation angle can be changed arbitrarily without restriction. When the angle between the two suction cups is at 0°, the flatly stacked cardboard can be sucked. When the angle between the two suction cups is greater than 0°, such as 90°, the four-corner carton can be unpacked to form a "mouth"-shaped carton. Moreover, the angle change is large, and many types of cartons are applicable. In addition, the four bottom plates at the bottom of the "mouth"-shaped carton are folded by using a plate folding device, a bottom support and two guide rods, and finally a paper box with an upper opening is obtained for packaging articles.

[0016] The cartoning machine integrates the functions of cardboard preparation storage, cardboard retrieval, box unpacking and carton export into one, with less manual intervention, high degree of automation and high-speed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of a corrugated cardboard box-forming mechanism and a box-forming machine.

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the structure from another perspective.

[0019] Figure 3 For the present invention Figure 1 Schematic diagram of the structure in working state.

[0020] Figure 4 For the present invention Figure 2 Schematic diagram of the structure in working state.

[0021] Figure 5 For the present invention Figure 1 Schematic diagram of the structure from a top-down perspective.

[0022] Figure 6 For the present invention Figure 1 Schematic diagram of the structure of the center folding device.

[0023] Figure numerals: 1. frame; 2. slide; 3. first turntable; 4. first suction cup; 5. second turntable; 6. second suction cup; 7. plate folding device; 8. bottom support; 9. guide rod; 10. support arm; 11. cylinder; 12. flap; 13. cardboard storage mechanism; 14. board storage track; 15. cardboard pusher; 16. linear drive assembly; 17. anti-slip block; 18. carton guide platform; 19. belt conveyor; 20. guide plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Embodiment 1: In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a corrugated cardboard box-forming mechanism includes a frame 1, a slide 2, a first turntable 3, a first suction cup 4, a second turntable 5, a second suction cup 6, a plate folding device 7, a bottom support 8 and a guide rod 9; The slide 2 is driven by a motor and slidably mounted on the rail of the frame 1; The first turntable 3 and the second turntable 5 are coaxially arranged and rotatably mounted on the slide 2, and the first turntable 3 and the second turntable 5 are driven by motors respectively; The first suction cup 4 and the second suction cup 6 are respectively mounted on the first turntable 3 and the second turntable 5 through the support arm 10, and an angle of 0-360° can be formed between the first suction cup 4 and the second suction cup 6; The plate folding device 7 is mounted on the support arm 10 and is adapted to the first suction cup 4; The bottom bracket 8 is mounted on the frame 1 and is consistent with the forward direction of the slide 2; The guide rods 9 are mounted on the frame 1 and are located on both sides of the base 8 . The two guide rods 9 gradually approach each other and increase in height along the advancing direction of the slide 2 .

[0031] The cartoning mechanism uses slotted and crimped cardboard.

[0032] Before taking the board, the first turntable 3 and the second turntable 5 are driven by motors, and the working surfaces of the first suction cup 4 and the second suction cup 6 are in the same plane; Then the sliding table 2 moves towards the cardboard under the drive of the motor until the suction cups hold the cardboard, and then the sliding table 2 retracts in the direction away from the cardboard to leave a space for the first suction cup 4 and the second suction cup 6 to open the box, and the sliding table 2 stops; At this time, the box-opening step is entered. Under the drive of the motor, the first turntable 3 and the second turntable 5 rotate independently, and the first suction cup 4 and the second suction cup 6 form a certain box-opening angle, such as Figure 1-2 In the figure, a 90° box-opening action forms a "mouth"-shaped cardboard box. At the same time, the folding plate 7 folds one of the bottom plates of the "mouth"-shaped cardboard box, which is one of the box-forming actions. In addition, this action also prepares for the cardboard box to avoid the bottom support 8 when moving forward; Finally, the sliding table 2 continues to move, and the bottom support 8 and the two guide rods 9 fold the remaining three bottom plates of the "mouth"-shaped cardboard box, and finally a paper box with an upper opening is obtained for packing items.

[0033] It should be noted that the angle between the first suction cup 4 and the second suction cup 6 changes greatly, and it is applicable to a variety of cardboard box types.

[0034] Preferably, the folding plate 7 includes a cylinder 11 and a flap 12. The flap 12 is rotatably installed on the support arm 10, and both ends of the cylinder 11 are rotatably connected to the support arm 10 and the flap 12 respectively.

[0035] When the cylinder 11 extends, it drives the flap 12 to rotate, and one end of the flap 12 tilts up to fold the bottom plate of the cardboard box.

[0036] Preferably, proximity sensors for the first turntable 3 and the second turntable 5 are provided on the sliding table 2.

[0037] The proximity sensors are arranged at different positions to control the rotation angles of the first turntable 3 and the second turntable 5, and to achieve fine adjustment when the specifications of the paper box change.

[0038] Embodiment 2: On the basis of the above embodiment, this embodiment shows a cardboard box-forming machine for corrugated cardboard, including a cardboard box-forming mechanism for corrugated cardboard. A cardboard storage mechanism 13 is provided on the feeding side of the frame 1. The cardboard storage mechanism 13 includes a board storage track 14, a pusher board 15 and a linear drive assembly 16. The board storage track 14 and the drive assembly 16 are both installed on the frame 1, and the pusher board 15 is connected to the moving end of the drive assembly 16.

[0039] The cardboard storage mechanism 13 is used for a large amount of preparatory storage of the corrugated cardboard after grooving and indentation. According to the working speed of the cardboard box-forming mechanism, the drive assembly 16 provides a suitable propulsion speed to the pusher board 15 to ensure the normal supply of the cardboard and reduce the amount of paper loading by workers.

[0040] Preferably, the linear drive assembly 16 includes a motor, a lead screw and a slider. The lead screw is arranged along the direction of the plate storage track 14 and is rotatably mounted on the frame 1. The motor drives the lead screw to rotate. The slider is slidably connected to the frame 1, and the slider is threadedly connected to the lead screw.

[0041] The motor drives the lead screw to rotate, and the slider moves on the frame 1 under the action of the lead screw. The pushing speed of the push paper board 15 is controlled by the rotation speed of the motor.

[0042] Preferably, the discharging end of the board storage track 14 is provided with an anti-dropping block 17 adapted to the paperboard.

[0043] The anti-dropping block 17 is used to prevent the cardboard in the cardboard storage mechanism 13 from falling over. The anti-dropping block 17 is not too large to ensure that the suction cup can smoothly take out the cardboard.

[0044] Embodiment three: On the basis of the above-mentioned embodiment, this embodiment shows that a paper box guide platform 18 is provided on the discharge side of the frame 1 , and a belt conveyor 19 is provided on the inner side of the paper box guide platform 18 .

[0045] There are two belt conveyors 19 which are arranged opposite to each other and are used to timely discharge the cartons made by the carton forming mechanism to prevent material blockage.

[0046] Preferably, a guide plate 20 is provided at the feeding end of the carton guide platform 18 .

[0047] The guide plate 20 guides the paper box to smoothly enter the paper box guide platform 18 .

[0048] A method for forming a box of corrugated cardboard uses a box forming mechanism for forming a box of corrugated cardboard and performs the following steps under the action of a controller: S1, take paper, the motor drives the first turntable 3 and the second turntable 5 to rotate, the first suction cup 4 and the second suction cup 6 are in the same plane, and move toward the paperboard on the slide 2, and the working surfaces of the first suction cup 4 and the second suction cup 6 are respectively attached to the two folded surfaces of the paperboard; S2, unpacking, the slide 2 moves away from the cardboard, the motor drives the first turntable 3 and the second turntable 5 to rotate again, the angle between the first suction cup 4 and the second suction cup 6 is consistent with the angle after the carton is boxed, and the folding device 7 at the second suction cup 6 folds a bottom plate of the carton after unpacking, and the folded bottom plate avoids the bottom support 8; S3, the carton is formed, the slide 2 further moves away from the cardboard, and after the carton is opened, the other three bottom plates of the carton are folded by the bottom support 8 and the two guide rods 9 to obtain a carton with an upper opening; S4, reset, the first suction cup 4 and the second suction cup 6 stop breathing and put down the carton, the slide 2 retreats, and the first turntable 3 and the second turntable 5 rotate in the opposite direction and reset.

[0049] It is worth noting that the coordinated control of the controller requires the use of various sensors, such as displacement sensors, photoelectric sensors and proximity sensors. Appropriate sensors can be selected and used according to the corresponding steps.

[0050] Moreover, high-speed boxing operations require control of the S1 to S4 cycle.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrugated cardboard boxing mechanism, characterized in that: It comprises a frame (1), a slide (2), a first turntable (3), a first suction cup (4), a second turntable (5), a second suction cup (6), a plate folding device (7), a bottom bracket (8) and a guide rod (9); The slide (2) is driven by a motor and slidably mounted on the rail of the frame (1); The first turntable (3) and the second turntable (5) are coaxially arranged and rotatably mounted on the slide (2), and the first turntable (3) and the second turntable (5) are driven by motors respectively; The first suction cup (4) and the second suction cup (6) are respectively mounted on the first turntable (3) and the second turntable (5) via a support arm (10), and an angle of 0-360° can be formed between the first suction cup (4) and the second suction cup (6); The plate folding device (7) is mounted on the support arm (10) and is adapted to fit the first suction cup (4); The base bracket (8) is mounted on the frame (1) and is aligned with the forward direction of the slide (2); The guide rods (9) are mounted on the frame (1) and are located on both sides of the base (8), and the two guide rods (9) gradually approach each other and increase in height along the forward direction of the slide (2).

2. The corrugated cardboard box-forming mechanism according to claim 1, characterized in that: The plate folding device (7) comprises a cylinder (11) and a flap (12); the flap (12) is rotatably mounted on the support arm (10); and two ends of the cylinder (11) are rotatably connected to the support arm (10) and the flap (12) respectively.

3. The corrugated cardboard box-forming mechanism according to claim 1, characterized in that: The slide table (2) is provided with proximity sensors respectively used for the first turntable (3) and the second turntable (5).

4. A corrugated cardboard box forming machine, characterized in that: A corrugated cardboard box-forming mechanism comprising the corrugated cardboard box-forming mechanism as claimed in any one of claims 1 to 3, wherein a cardboard storage mechanism (13) is arranged on the feeding side of the frame (1), and the cardboard storage mechanism (13) comprises a cardboard storage track (14), a cardboard pusher (15) and a linear drive assembly (16), wherein the cardboard storage track (14) and the drive assembly (16) are both mounted on the frame (1), and the cardboard pusher (15) is connected to the moving end of the drive assembly (16).

5. The corrugated cardboard box forming machine according to claim 4, characterized in that: The linear drive assembly (16) comprises a motor, a lead screw and a slider, the lead screw being arranged along the direction of the plate storage track (14) and being rotatably mounted on the frame (1), the motor driving the lead screw to rotate, the slider being slidably connected to the frame (1), and the slider being threadably connected to the lead screw.

6. The corrugated cardboard box forming machine according to claim 4, characterized in that: The discharging end of the board storage track (14) is provided with an anti-slip block (17) adapted to the board.

7. The corrugated cardboard box forming machine according to claim 4, characterized in that: A paper box guide platform (18) is provided on the discharge side of the frame (1), and a belt conveyor (19) is provided on the inner side of the paper box guide platform (18).

8. The corrugated cardboard box forming machine according to claim 4, characterized in that: A guide plate (20) is provided at the feeding end of the paper box guide platform (18).

9. A method for forming a corrugated cardboard box, characterized in that: Using the corrugated cardboard box-forming mechanism as described in any one of claims 1 to 3, under the action of a controller, the following steps are performed: S1, taking paper, the motor drives the first turntable (3) and the second turntable (5) to rotate, the first suction cup (4) and the second suction cup (6) are located in the same plane, and move toward the paperboard on the slide (2), and the working surfaces of the first suction cup (4) and the second suction cup (6) are respectively attached to the two folded surfaces of the paperboard; S2, unpacking, the slide (2) moves in the direction away from the cardboard, the motor drives the first turntable (3) and the second turntable (5) to rotate again, the angle between the first suction cup (4) and the second suction cup (6) is consistent with the angle after the carton is formed, and the folding device (7) at the second suction cup (6) folds a bottom plate of the carton after unpacking, and the folded bottom plate avoids the bottom support (8); S3, the carton is formed, the slide (2) further moves in the direction away from the cardboard, and after the carton is opened, the other three bottom plates of the carton are folded by the bottom support (8) and the two guide rods (9) to obtain a carton with an upper opening; S4, reset, the first suction cup (4) and the second suction cup (6) are shut off to put down the paper box, the slide table (2) retreats, and the first turntable (3) and the second turntable (5) rotate in the opposite direction to reset.

Images