Carton bottom buckling forming machine

Abstract

The utility model relates to a paper box bottom buckling forming machine which comprises a rack, a storage mechanism, a conveying mechanism used for conveying a paper box to be unfolded, an unfolding mechanism used for adsorbing the paper box to be unfolded to a bottom buckling position and unfolding the paper box and a bottom buckling mechanism located below the unfolding mechanism and used for conducting bottom buckling treatment on the unfolded paper box. The to-be-unfolded paper box comprises swing wing assemblies in random directions; the conveying mechanism comprises a conveying shaft, a conveying assembly moving left and right on the conveying shaft, a left suction cup assembly installed on the two sides of the conveying assembly and used for conveying a to-be-unfolded paper box to the unfolding mechanism, and a right suction cup assembly used for conveying a bottom-buckled paper box to the finished product storage mechanism. According to the carton bottom buckling forming machine, cartons to be subjected to bottom buckling can be randomly arranged, the front faces of the cartons with the bottoms buckled can face upwards, an operator can conveniently and synchronously place articles in the cartons, full automation and full intelligence are achieved, and the problem that in the using process of a bottom buckling machine, the placing directions of the cartons need to be unified is fundamentally solved.

Description

Technical Field

[0001] The utility model relates to a paper box bottom buckle forming machine, belonging to the technical field of paper box bottom buckle machines. Background Art

[0002] Paper boxes are now ubiquitous in our daily lives, with the most common type being the plug-in, self-locking bottom box. These boxes typically share similar bottom flap structures, requiring the flaps to be folded upwards according to a specific folding sequence, and finally the front tongues of the flaps to be pressed into the bottom structure to lock the bottom. This process, commonly known as bottom buckling, is currently performed by a box bottom buckling machine or manually.

[0003] The bottom buckle machines currently available on the market all have only one specific processing direction, which requires the carton board raw materials to be placed in a specific direction. The bottom buckle machines in the entire market also do not have the direction recognition function after the carton is opened, and can only be used for bottom buckles of cartons with fixed directions. When the direction of the carton is changed, the system cannot recognize the change in the carton direction and make corresponding changes. If the machine is operated according to its original action, the bottom structure of the carton will be destroyed. Therefore, the entire bottom buckle system still relies on a certain amount of manpower, and it is necessary to manually unify the direction of the carton and then put it into the feed port (the knife plate for carton production must also be fixed). The whole process is no problem for carton boards with neat and uniform directions, but when the direction of the carton boards is disrupted, manual intervention is required.

[0004] Currently, very few bottom-locking machines on the market can identify the direction of an object. These typically rely on a graphical scanning method, where a camera scans the current image information and uploads it to a control system. The control system then uses an algorithm to restore and analyze the current image data, determining the specific details of the surface being scanned by the camera. However, this method is costly and energy-intensive for bottom-locking machines, and the machine structure is relatively complex. Furthermore, in harsh industrial production environments, cameras can easily blur, resulting in anomalies in the collected carton data. Furthermore, this method is expensive to develop. Consequently, current bottom-locking machines on the market generally do not include a process for determining carton direction.

[0005] Nowadays, many product manufacturing industries use small paper boxes for packaging, and most of the paper boxes adopt the packaging method of buckled bottom boxes. However, most of the existing small paper box packaging uses manual buckling of the box bottom, which is inefficient, costly, and occupies a large area of ​​the assembly line. Chinese patent CN218171538U discloses an automatic box folding machine, which is applied in the field of paper box folding devices. The key points of its technical solution are: it includes a frame, a supporting plate fixed on the frame, and a supporting frame fixed above the supporting plate, and the supporting plate is provided with a plurality of openings and sliding holes; a feeding assembly is slidably connected to the supporting frame, and a material taking assembly is provided below the feeding assembly, and the material taking assembly is vertically slidably connected to the supporting plate; extrusion mechanisms are provided on both sides of the material taking assembly, and the extrusion mechanisms slide horizontally on the supporting plate; and a paper folding mechanism is provided on one side of the extrusion mechanism. The technical solution of the above patent is that the cartons to be buckled are placed from top to bottom, the bottom cartons are unfolded by the suction cup, and then the bottoms are buckled by the cylinder and the push plate, and then the processed cartons are blown into the collection bin through the air holes. The opening of the processed cartons faces right, and the bottoms are buckled on the left. There are two disadvantages here: 1. The feeding is placed flat and relies on gravity to let the boxes fall to the suction cup below. When the boxes are relatively light or there are only a few boxes left, the suction cup below will adsorb abnormally and require manual intervention, which increases labor. In addition, the cartons with buckled bottoms placed from top to bottom can only hold a limited amount of materials (limited height); 2. The discharged materials are placed flat and in a disordered direction, and need to be manually straightened before the items can be placed. It is also difficult to achieve automated connection after this process.

[0006] This patent specifically addresses this issue by designing a truly fully compatible machine. Full compatibility means that boxes within the standard size range can function normally regardless of orientation or whether the two sides are the same length. Materials can also be placed randomly without affecting normal operation. The buckle-bottom folding machine designed using this structural concept achieves excellent compatibility at a relatively low cost. It can be electrically adjusted to the appropriate position without manual structural adjustments (such as screw tightening). Compared to previous products, it is more convenient and applicable, faster, more efficient, and more labor-saving! Utility Model Content

[0007] The utility model provides a fully automatic and intelligent paper box bottom buckle forming machine and bottom buckle method, which can randomly arrange paper boxes to be buckled, and the paper boxes after the bottom is buckled can face up to facilitate the operator to place items in the box simultaneously. It fundamentally solves the problem of the need to unify the direction of paper boxes when using the bottom buckle machine. The function is simple to implement and the execution is convenient and reliable.

[0008] A carton bottom buckle forming machine comprises a frame, a storage mechanism located on one side of the frame and used to store cartons to be unfolded, a conveying mechanism for conveying cartons to be unfolded, an unfolding mechanism for sucking the cartons to be unfolded to a bottom buckle position and unfolding them, and a bottom buckle mechanism located below the unfolding mechanism and used to buckle the bottom of the unfolded cartons; the cartons to be unfolded include a swing wing assembly with random directions;

[0009] The conveying mechanism includes a conveying shaft, a conveying assembly that moves left and right on the conveying shaft, a left suction cup assembly installed on both sides of the conveying assembly and used to convey the paper box to be unfolded to the unfolding mechanism, and a right suction cup assembly used to convey the paper box with a buckled bottom to the finished product storage mechanism;

[0010] The unfolding mechanism includes an unfolding device that can be moved left and right to adjust the position so that the center of the paper box to be unfolded corresponds to the center of the bottom-fastening mechanism, an unfolding suction cup assembly installed on the unfolding device and used to adsorb the paper box to be unfolded, which is adsorbed by the left suction cup assembly, to the bottom-fastening position, and a folding plate assembly installed on the unfolding device and used to unfold the paper box to be unfolded;

[0011] The bottom buckling mechanism is located below the bottom buckling position; the bottom buckling mechanism includes a hollow square mounting platform, which drives the mounting platform to move horizontally so that the center of the paper box to be buckled corresponds to the center of the mounting platform, and a paper box bottom buckling component symmetrically installed on the four sides of the mounting platform and inclined to the mounting platform; the paper box bottom buckling component includes an actuator cylinder component and an actuator bracket component installed at the front end of the actuator cylinder component for folding the paper box swing wings in turn; the fifth actuator bracket for folding the paper box swing wings and a top and bottom cylinder that can rotate to change the direction of the fifth actuator bracket are installed in the hollow part of the mounting platform, and the fifth actuator bracket is installed at the front end of the top and bottom cylinder.

[0012] The rocker assembly includes a first rocker, a second rocker, a third rocker and a fourth rocker.

[0013] The storage mechanism comprises left and right baffles for fixing both sides of the paper box to be unfolded and a rear baffle for preventing the paper box to be unfolded from tipping over and pushing the paper box forward.

[0014] The frame includes a carrying plate, the conveying mechanism and the unfolding mechanism are located above the carrying plate, and the bottom buckling mechanism is located below the carrying plate.

[0015] The bottom buckle mechanism is also provided with a sensor for identifying the specific direction of each rocker in the rocker assembly.

[0016] The carton to be buckled includes a swing wing assembly (four flaps) with random orientations. After the actuator cylinder assembly extends, the actuator bracket assembly mounted on the top of the cylinder, which contacts the four flaps of the carton, points toward the center point of the bottom of the buckled carton, without interfering or contacting each other. This design allows the carton's four orientations to be freely interchanged.

[0017] The hollow part of the installation platform is equipped with a fifth execution bracket for folding the rocking wings of the paper box and a top and bottom cylinder that can rotate to change the direction of the fifth execution bracket. The fifth execution bracket (top plate) is installed at the front end of the top and bottom cylinder.

[0018] The mounting platform is mounted on the bottom-locking machine via a fixed bracket assembly. The moving assembly includes two pairs of linear bearing assemblies mounted at the lower end of the mounting platform, which support the stable linear motion of the mounting platform. A linear track is installed between each pair of linear bearing assemblies, and the linear track passes through the linear bearing assembly and is mounted on the fixed bracket assembly. A first motor and a screw connected to the first motor that drives the mounting platform are also located at the lower end of the mounting platform. The direction and distance of movement of the mounting platform are controlled by the first motor driving the horizontal screw.

[0019] The first motor, mounted on a fixed bracket, rotates the lead screw, which in turn drives the lead nut, which in turn drives the mounting platform, which in turn drives all cylinders on the mounting platform. The resulting effect is that the motor's movement causes the center points of all actuators to move relative to the fixed bracket. A position sensor installed between the fixed bracket and the platform detects when the structure has reached a specified position.

[0020] The inclination angle between the carton bottom buckle assembly and the mounting platform is 40°-50°, preferably 45°.

[0021] A first top and bottom support plate and a second top and bottom support plate are provided in the hollow of the mounting platform, and an upper connecting plate, a motor plate and a lower connecting plate are provided between the first top and bottom support plates and the second top and bottom support plates.

[0022] The top and bottom cylinders are installed on a screw shaft. The other end of the screw shaft is provided with a threaded portion. The threaded portion passes through the upper connecting plate, the motor plate and the lower connecting plate and is connected to the screw nut. The screw shaft is driven to rotate by the second motor.

[0023] The screw shaft is sleeved with a sliding bearing, a synchronous wheel and an electric slip ring.

[0024] The fixed bracket assembly and the mounting platform are equipped with position sensors that can identify whether the mounting platform has reached the specified position.

[0025] The actuator cylinder assembly and the top and bottom cylinders are equipped with magnetic sensors for identifying the movement positions of the cylinders during operation.

[0026] The contact surface between the execution bracket assembly and the paper box is polished and smooth, and the corners are curved.

[0027] The execution cylinders are all at an angle of about 45 degrees to the installation platform. As long as the execution centers of the four execution cylinders are basically consistent with the center of the box, it can be ensured that the flaps at the bottom of the paper box within the design range can be folded normally.

[0028] The mounting platform is connected to the fixed bracket through a linear bearing and is designed with a screw rod assembly. The mounting platform can rotate the screw rod according to the size of the box to adjust the center position of the cylinder in the linear direction.

[0029] Preferably, the top and bottom cylinders are mounted on a screw shaft, which is connected to the mounting platform via linear bearings, screw nuts, and connecting accessories. The screw can rotate to drive the top and bottom cylinders to adapt to boxes of different sizes and directions.

[0030] The focus of the above structure is the symmetrical compatibility of the cylinders during execution, and the adjustment methods include but are not limited to the use of motor adjustment. This structure can realize automatic or manual adjustment of the center point position of the entire cylinder combination, and the mounting platform only moves in one horizontal direction, with very reliable mechanical stability; the top and bottom cylinders can rotate with the shaft, and by controlling the movement sequence of the four symmetrical cylinders and the rotation direction of the top and bottom cylinders, the four directions of the carton can be operated in any order. At the same time, the position of the cylinder is designed to be compatible with boxes of different sizes. The above structure can realize electronic control to adjust the position and sequence, ignoring the compatibility issues caused by the direction and size of the box, and bringing full compatibility to the bottom buckle folding machines on the market. The mechanical structure is simple and reliable, the inertia of the actuator is small, and high-speed bottom buckle action can be performed. This structure has faster speed and better compatibility than all similar products currently available, and can adapt to a wider compatibility range without replacing structural parts.

[0031] The above structure is universal and can be used to perform the bottom-locking operation on any box that meets this standard. It does not require replacement or manual modification of structural components to accommodate different boxes. To achieve this function, a machine-controlled motor moves the mounting platform so that the actuation center points of the four actuator cylinders are roughly aligned with the centerline of the bottom surface of the box to be folded. A larger tolerance is acceptable for this consistency; the smaller the tolerance, the better the execution and compatibility. Once the box is secured, the machine identifies the orientation of the clamped box and determines the execution sequence of the actuator cylinders in this patented structure. The final step is the activation of the top and bottom cylinders, which can be adjusted by the motor before execution. The actuator assembly, which is used to lock the bottom of the box, must meet the minimum box size. When the flaps are in place, the point of force applied to the flaps must be at least one centimeter from the edge of the box. As long as the center points are within a reasonable distance (within half the dimension of the assembly's force-bearing surface), large boxes can fold properly, and larger boxes will fold properly, with greater force applied. Magnetic sensors or time delays are used to control the cylinder sequence for more stable operation.

[0032] The bottom buckle forming machine designed by this patented utility model adopts a fully symmetrical bottom buckle structure and a simple two-way photoelectric sensor design. The ability to collect direction is relatively stable and simple to implement. With the fully symmetrical bottom buckle structure, the execution order of the bottom buckle structure can be automatically changed to ensure that boxes with different orientations have normal bottom buckles. No manual intervention is required. Boxes can be placed in random directions and still work normally. Compared with other bottom buckle machines, the loading workload of this patented bottom buckle forming machine is only less than 30% of that of other machines. If other bottom buckle machines require one person to manage 5 machines, then this machine can manage 20 machines by one person.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] The current folding and bottom-locking machines on the market use crude and simple discharging methods, typically implemented using the following schemes: 1. Blowing out the finished boxes with air; 2. Using the finished product at the back to push out the front; 3. Using a pneumatic cylinder to push out; 4. Using a gravity ramp to slide out. The boxes folded using these methods are stacked messily and have irregular discharging directions. To load the products into the boxes, they need to be manually picked up again, which may involve additional movements such as bending over and reaching, increasing production time. More importantly, the current common folding and bottom-locking machines all discharge the materials flatly because the feed material is flat. This has two disadvantages: 1. The flat feed material relies on gravity to drop the boxes onto the suction cups below. When the boxes are light or only a few boxes are left, the suction cups below may not adhere properly, requiring manual intervention and increasing labor costs. 2. The discharging materials are flat and oriented incorrectly, requiring manual adjustment before the items can be placed, making it difficult to achieve automated connection to the subsequent process.

[0035] When using the bottom buckle forming machine of this invention, the opened products are neatly arranged with the front side facing upwards. Workers can put the items directly without any action, and it can also be more convenient to connect to the automated equipment behind, such as a robot. Compared with the way of placing paper boxes flat, the materials of the bottom buckle forming machine of this invention are stacked vertically, and the material bin can be set horizontally. More paper boxes to be folded can be stored. This patent is preferably 3 times that of other machines! Because other bottom buckle machines are stacked horizontally, the more boxes there are, the higher the material is stacked, and the more difficult it is to put the boxes in. This problem does not exist in this patent. If you want to put more boxes, you only need to lengthen the material bin of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a structural diagram of a paper box in a paper box bottom buckle forming machine according to the present invention (1);

[0038] Figure 2 This is a structural diagram of a paper box in a paper box bottom buckle forming machine of the utility model (2);

[0039] Figure 3 This is a structural diagram of a paper box bottom buckle forming machine according to the present invention;

[0040] Figure 4 This is a structural diagram of the storage mechanism, conveying mechanism and unfolding mechanism in a paper box buckle bottom forming machine of the utility model;

[0041] Figure 5 This is a structural diagram of a storage mechanism in a paper box buckle bottom forming machine of the utility model;

[0042] Figure 6 This is a structural diagram of a conveying mechanism in a carton bottom buckle forming machine according to the present invention;

[0043] Figure 7 This is a structural diagram of an unfolding mechanism in a paper box bottom buckle forming machine of the present utility model;

[0044] Figure 8 This is a structural schematic diagram of a bottom buckle mechanism in a paper box bottom buckle forming machine according to the present invention (1);

[0045] Figure 9 This is a structural schematic diagram of a bottom buckle mechanism in a paper box bottom buckle forming machine according to the present invention (2);

[0046] Figure 10 This is a structural schematic diagram of a bottom buckle mechanism in a paper box bottom buckle forming machine according to the present invention (3);

[0047] Figure 11 This is the recommended installation method for the top and bottom cylinders and the top and bottom support plates in the paper box buckle bottom forming machine of the utility model;

[0048] Figure 12 This is a schematic diagram of a folding box bottom pushing machine for a paper box buckle bottom forming machine according to the present invention.

[0049] In the figure: 1-carrying plate; 1.1-mounting platform; 1.2-first fixed bracket; 1.3-second fixed bracket; 1.4-first top and bottom support plates; 1.5-second top and bottom support plates; 1.6-upper connecting plate; 1.7-lower connecting plate; 1.8-motor plate; 2.1-first executing cylinder; 2.2-second executing cylinder; 2.3-third executing cylinder; 2.4-fourth executing cylinder; 2.5-top and bottom cylinders; 3.1-first linear bearing; 3.2-second linear bearing; 3.3-third linear bearing; 4.1-first motor; 4.2-second motor; 5.1-first executing bracket; 5.2-second executing bracket; 5.3-third executing bracket; 5.4-fourth executing bracket; 5.5-fifth executing bracket; 6.1-smallest box; 6.2-largest box 6.1.1-Minimum box edge; 6.1.2-Maximum box edge; 7.1-First linear rail; 7.2-Second linear rail; 7.3-First optical axis; 7.4-Second optical axis; 8.1-Screw rod; 8.2-Screw rod shaft; 10-Sliding bearing; 11-Electric slip ring; 13-Screw rod nut; 14-Linear bearing; 15-Control panel; 16-Frame; 17-Storage mechanism; 18-Conveying mechanism; 19-Unfolding mechanism; 20-Left and right baffles; 21-Rear baffle; 22-Left suction cup assembly; 23-Conveying assembly; 24-Right suction cup assembly; 25-Conveying shaft; 26-Folding plate assembly; 27-Unfolding suction cup assembly; 28-Installing side panels; 29-Moving cylinder; 30-First rocker wing; 31-Second rocker wing; 32-Third rocker wing; 33-Fourth rocker wing. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] Reference Figure 1-Figure 7A carton bottom buckle forming machine includes a frame 16, a storage mechanism 17 located on one side of the frame 16 and used to store the carton to be unfolded, a conveying mechanism 18 for conveying the carton to be unfolded, an unfolding mechanism 19 for adsorbing the carton to be unfolded to the bottom buckle position and unfolding it, and a bottom buckle mechanism located below the unfolding mechanism 19 and used to buckle the bottom of the unfolded carton; the carton to be unfolded includes a rocking wing assembly with random directions; the frame 16 is equipped with a control panel 15.

[0052] The conveying mechanism 18 includes a conveying shaft 25, a conveying assembly 23 that moves left and right on the conveying shaft 25, a moving cylinder 29 that provides power to the conveying assembly 23, a left suction cup assembly 22 installed on both sides of the conveying assembly 23 and used to convey the paper boxes to be unfolded to the unfolding mechanism 19, and a right suction cup assembly 24 for conveying the paper boxes with buckled bottoms to the finished product storage mechanism; the conveying shaft 25 is installed on the mounting side plate 28;

[0053] The unfolding mechanism 19 includes an unfolding device that can be moved left and right to adjust the position so that the center of the carton to be buckled is aligned with the center of the bottom buckling mechanism, an unfolding suction cup assembly 27 installed on the unfolding device and used to suck the carton to be unfolded, which is sucked by the left suction cup assembly 22, to the bottom buckling position, and a folding plate assembly 26 installed on the unfolding device and used to unfold the carton to be unfolded;

[0054] Reference Figure 8-11 , the bottom buckling mechanism is located below the bottom buckling position; the bottom buckling mechanism includes a hollow square mounting platform 1.1, which drives the mounting platform 1.1 to move horizontally so that the center of the carton to be buckled corresponds to the center of the mounting platform 1.1 and a carton bottom buckling component symmetrically installed on the four sides of the mounting platform 1.1 and inclined to the mounting platform 1.1; the carton bottom buckling component includes an actuator cylinder component and an actuator bracket component installed at the front end of the actuator cylinder component for folding the carton rocking wings in turn; the fifth actuator bracket 5.5 for folding the carton rocking wings and the top and bottom cylinder 2.5 that can rotate to change the direction of the fifth actuator bracket 5.5 are installed in the hollow part of the mounting platform 1.1, and the fifth actuator bracket 5.5 is installed at the front end of the top and bottom cylinder 2.5. The actuator cylinder assembly includes a first actuator cylinder 2.1, a second actuator cylinder 2.2, a third actuator cylinder 2.3 and a fourth actuator cylinder 2.4, and the actuator bracket assembly includes a first actuator bracket 5.1, a second actuator bracket 5.2, a third actuator bracket 5.3, a fourth actuator bracket 5.4 and a fifth actuator bracket 5.5.

[0055] The rocker assembly includes a first rocker wing 30 , a second rocker wing 31 , a third rocker wing 32 and a fourth rocker wing 33 .

[0056] The storage mechanism 17 includes left and right baffles 20 for securing the unfolded cartons, and a rear baffle 21 for preventing the unfolded cartons from tipping over and for advancing them. The frame 16 includes a carrier plate 1. The conveying mechanism 18 and unfolding mechanism 19 are located above the carrier plate 1, and the bottom-locking mechanism is located below the carrier plate 1. The bottom-locking mechanism is also equipped with a sensor for identifying the specific orientation of each swinging wing in the swinging wing assembly.

[0057] The paper box to be buckled includes a rocking wing assembly (four flaps) with random directions; after the execution cylinder assembly is extended, the execution bracket assembly of the four flaps of the contact paper box installed on the top of the cylinder all points to the bottom center point of the buckled paper box, but the four flap accessories do not interfere with or contact each other. This design can meet the requirement that the order of the four directions of the paper box can be changed at will. The fifth execution bracket 5.5 for folding the rocking wings of the paper box and the top-bottom cylinder 2.5 that can rotate to change the direction of the fifth execution bracket 5.5 are installed in the hollow part of the installation platform 1.1. The fifth execution bracket 5.5 (top plate) is installed at the front end of the top-bottom cylinder 2.5.

[0058] The mounting platform 1.1 is mounted on the bottom buckle machine via a fixed bracket assembly. The moving assembly includes two pairs of linear bearing assemblies mounted at the lower end of the mounting platform 1.1 to support the stable linear motion of the mounting platform 1.1. A first linear track 7.1 and a second linear track 7.2 are mounted between each pair of linear bearing assemblies. The linear tracks pass through the linear bearing assemblies and are mounted on the fixed bracket assembly. The lower end of the mounting platform 1.1 is also provided with a first motor 4.1 and a screw 8.1 connected to the first motor 4.1 and driving the mounting platform 1.1 to move. The direction and distance of movement of the mounting platform 1.1 can be determined by the first motor 4.1 driving the horizontal screw 8.1 to move. The fixed bracket assembly includes a first fixed bracket 1.2 and a second fixed bracket 1.3. The linear bearing assembly includes a first linear bearing 3.13.1, a second linear bearing 3.2, and a third linear bearing 3.3.

[0059] A first motor 4.1 is fixed to the fixed bracket, driving the screw 8.1. This drives the screw nut 13, which in turn drives the mounting platform 1.1, which in turn drives all the cylinders attached to it. The resulting effect is that the motor's movement causes the center points of all actuators to move relative to the fixed bracket. A position sensor is installed between the fixed bracket and the platform to detect when the structure has reached a specified position.

[0060] The inclination angle between the carton bottom buckle assembly and the mounting platform 1.1 is 40°-50°, preferably 45°.

[0061] The hollow portion of the mounting platform 1.1 is provided with a first top and bottom support plate 1.4 and a second top and bottom support plate 1.5. An upper connecting plate 1.6, a motor plate 1.8, and a lower connecting plate 1.7 are located between the first and second top and bottom support plates 1.4 and 1.5. The top and bottom cylinder 2.5 is mounted on a screw shaft 8.2. The other end of the screw shaft 8.2 is provided with a threaded portion that passes through the upper connecting plate 1.6, the motor plate 1.8, and the lower connecting plate 1.7, connecting to the screw nut 13. The screw shaft 8.2 is driven for rotation by the second motor 4.2. A first optical axis 7.3 and a second optical axis 7.4 are mounted between the motor plate 1.8 and the upper connecting plate 1.6.

[0062] The screw shaft 8.2 is provided with a sliding bearing 10, a synchronous wheel and an electric slip ring 11. The fixed bracket assembly and the mounting platform 1.1 are equipped with position sensors that can identify whether the mounting platform 1.1 has reached the specified position. The actuator cylinder assembly and the top and bottom cylinders 2.5 are equipped with magnetic sensors that identify the movement position of the cylinder during operation. The contact surface of the actuator bracket assembly with the paper box is polished and smooth, and the corners are curved. The actuator cylinders are all at an angle of about 45 degrees to the mounting platform 1.1. As long as the execution center of the four actuator cylinders is basically consistent with the center of the box, it can be guaranteed that the flaps at the bottom of the paper box within the design range can be folded normally. The mounting platform 1.1 is connected to the fixed bracket through a linear bearing 14 and is designed with a screw 8.1 assembly. The mounting platform 1.1 can adjust the center position of the cylinder in the linear direction by rotating the screw 8.1 according to the size of the box.

[0063] The top and bottom cylinders 2.5 are installed on the screw shaft 8.2, and the screw shaft 8.2 is installed and connected to the mounting platform 1.1 through linear bearings 14, screw nuts 13 and connecting accessories. The screw 8.1 can rotate to drive the top and bottom cylinders 2.5 to adapt to boxes of different sizes and different directions.

[0064] The focus of the above structure is the symmetrical compatibility of the cylinders during execution, and the adjustment methods include but are not limited to the use of motor adjustment. This structure can realize automatic or manual adjustment of the center point position of the entire cylinder combination, and the mounting platform 1.1 only moves in one horizontal direction, with very reliable mechanical stability; the top and bottom cylinders 2.5 can rotate with the axis, and by controlling the movement sequence of the four symmetrical cylinders and the rotation direction of the top and bottom cylinders 2.5, the four directions of the carton can be operated in any order. At the same time, the position of the cylinder is designed to be compatible with boxes of different sizes. The above structure can realize electronic control to adjust the position and sequence, ignoring the compatibility issues caused by the direction and size of the box, and bringing full compatibility to the bottom buckle folding machines on the market. The mechanical structure is simple and reliable, the inertia of the actuator is small, and it can perform high-speed bottom buckle actions. It has faster speeds and better compatibility than all similar products currently available, and can adapt to a wider compatibility range without replacing structural parts.

[0065] The above-described structure is universal and can be used to perform the bottom-locking action on any box that meets this standard. It does not require replacement or manual modification of structural components to accommodate different boxes. To achieve this function, a machine-controlled motor moves the mounting platform 1.1 so that the actuation center points of the four actuator cylinders are roughly aligned with the centerline of the bottom surface of the box to be folded. A larger tolerance is acceptable for this consistency; the smaller the tolerance, the better the execution and compatibility. Once the box is secured, the machine identifies the orientation of the clamped box and determines the execution sequence of the actuator cylinders in this patented structure. The final step is the activation of the top and bottom cylinders 2.5, which can be adjusted by the motor before actuation. The actuator assembly, used to secure the bottom of the box, must ensure that, for a minimum box size of 6.1, the point at which the flap bears force is at least one centimeter from the edge of the box when the flap is in place. As long as the center points are within a reasonable distance (within half the dimension of the accessory's bearing surface), large boxes can fold properly, and the larger the force, the better. Use magnetic sensors or time delay effects to control the sequential process of the cylinders to make the operation more stable.

[0066] The bottom buckle forming machine designed by this patented utility model adopts a fully symmetrical bottom buckle structure and a simple two-way photoelectric sensor design. The ability to collect direction is relatively stable and simple to implement. With the fully symmetrical bottom buckle structure, the execution order of the bottom buckle structure can be automatically changed to ensure that boxes with different orientations have normal bottom buckles. No manual intervention is required. Boxes can be placed in random directions and still work normally. Compared with other bottom buckle machines, the loading workload of this patented bottom buckle forming machine is only less than 30% of that of other machines. If other bottom buckle machines require one person to manage 5 machines, then this machine can manage 20 machines by one person.

[0067] For a deeper understanding of the design ideas of this structure, refer to Figure 12 The thicker line in the figure shows two rectangular boxes of different sizes. The inner small box represents the center cross-section of the smallest box 6.1 in the design size, and the outer box represents the center cross-section of the largest box in the design size. In order to better illustrate the design, the smallest box 6.1 has the smallest box edge 6.1.1, and the largest box 6.2 has the smallest box edge 6.1.2. Figure 12 When drawing the cross-sectional view of the smallest box 6.1 and the largest box 6.2, the bottom right flap is shown as a schematic diagram of the cylinder extending to fold the flap, and the lower left part of the largest box 6.2 and the smallest box 6.1 is a schematic diagram showing the position of the cylinder not yet folded and ready to be extended. Figure 12The two thin, cross-shaped lines shown indicate the desired box position. The horizontal line represents the lower plane of the box's base, and the intersection of the horizontal and vertical lines represents the center point of the lower plane. The core design principle is that, regardless of the box's size, the folded edge always folds toward the center point of the box's base. The edge of the bottom flap is also proportionally defined, with a defined width and a smooth, curved front end to accommodate a wide range of movement. Regardless of the box's size, the cylinder always pushes the edge toward the center point when extended.

[0068] The bottom buckle machine is just a name. The bottom buckle machine, forming machine, forming machine, carton bottom buckle forming machine, and carton bottom buckle forming machine described in this article all refer to a type of machine used to make the bottom buckle of the buckle-shaped paper into an unfolded buckle shape.

[0069] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A carton bottom buckle forming machine, characterized by: The invention comprises a frame, a storage mechanism located on one side of the frame and used to store the paper boxes to be unfolded, a conveying mechanism for conveying the paper boxes to be unfolded, an unfolding mechanism for sucking the paper boxes to be unfolded to the bottom buckling position and unfolding them, and a bottom buckling mechanism located below the unfolding mechanism and used to buckle the bottom of the unfolded paper boxes; the paper boxes to be unfolded include a swing wing assembly with random directions; The conveying mechanism includes a conveying shaft, a conveying assembly that moves left and right on the conveying shaft, a left suction cup assembly installed on both sides of the conveying assembly and used to convey the paper box to be unfolded to the unfolding mechanism, and a right suction cup assembly used to convey the paper box with a buckled bottom to the finished product storage mechanism; The unfolding mechanism includes an unfolding device, an unfolding suction cup assembly mounted on the unfolding device and used to adsorb the paper box to be unfolded adsorbed by the left suction cup assembly to a bottom buckle position, and a folding plate assembly mounted on the unfolding device and used to unfold the paper box to be unfolded; The bottom buckle mechanism is located below the bottom buckle position; the bottom buckle mechanism includes a hollow square mounting platform and a carton bottom buckle assembly symmetrically mounted on the four sides of the mounting platform and inclined to the mounting platform; the carton bottom buckle assembly includes an actuator cylinder assembly and an actuator bracket assembly mounted at the front end of the actuator cylinder assembly for folding the carton wings in turn; a fifth actuator bracket and a top and bottom cylinder for folding the carton wings are installed in the hollow part of the mounting platform, and the fifth actuator bracket is mounted at the front end of the top and bottom cylinder.

2. The carton bottom buckle forming machine according to claim 1, characterized in that: The rocker assembly includes a first rocker, a second rocker, a third rocker and a fourth rocker.

3. The carton bottom buckle forming machine according to claim 1 or 2, characterized in that: The storage mechanism comprises left and right baffles for fixing both sides of the paper box to be unfolded and a rear baffle for preventing the paper box to be unfolded from tipping over and pushing the paper box forward.

4. The carton bottom buckle forming machine according to claim 3, characterized in that: The frame includes a carrying plate, the conveying mechanism and the unfolding mechanism are located above the carrying plate, and the bottom buckling mechanism is located below the carrying plate.

5. The carton bottom buckle forming machine according to claim 1, characterized in that: The bottom buckle mechanism is also provided with a sensor for identifying the specific direction of each rocker in the rocker assembly.

6. The carton bottom buckle forming machine according to claim 1, characterized in that: The mounting platform is mounted on the bottom buckle machine through a fixed bracket assembly. The moving assembly includes two pairs of linear bearing assemblies mounted at the lower end of the mounting platform. A linear rail is installed between each pair of linear bearing assemblies. The linear rail passes through the linear bearing assembly and is mounted on the fixed bracket assembly. The lower end of the mounting platform is also provided with a first motor and a screw connected to the first motor and driving the mounting platform to move.

7. The carton bottom buckle forming machine according to claim 6, characterized in that: The inclination angle between the carton bottom buckle assembly and the mounting platform is 40°-50°.

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