A fully automatic carton forming apparatus and forming method

Abstract

The application discloses a kind of full-automatic carton forming equipment and forming method, belong to carton preparation technical field.The equipment includes support platform, conveying chain and first to seventh workstations sequentially arranged along conveying chain, each workstation is equipped with in-place detection sensor and position detection sensor;First workstation is used to supply paper box blank one by one;Second workstation is used to erect and superimpose the front and rear side plates and end single plate of flat blank, and press the first folding ear;Third workstation is used to push the lock tongue into the lock port to complete locking and press the second folding ear;Fourth workstation is used to erect left and right folding edge plate;Fifth workstation is used to bend inwardly and shape folding edge plate;Sixth workstation is used to push flat and press into the box;Seventh workstation is used to take out and output finished product paper box.The application realizes the whole process automation operation of paper box blank from flat to three-dimensional forming, each workstation is compactly connected, effectively overcome the forming defects caused by material springback.

Description

Technical Field

[0001] This invention relates to the field of cardboard box manufacturing technology, specifically to a fully automatic cardboard box forming equipment and forming method. Background Technology

[0002] Cardboard boxes, as the primary carrier of product packaging, are widely used in many fields such as food, electronics, daily chemicals, and logistics. With the rapid development of the packaging industry, enterprises are placing increasingly higher demands on the automation level, production efficiency, and forming quality of cardboard box forming equipment.

[0003] Currently, most of the existing carton forming equipment on the market adopts a semi-automatic or split-type operation mode. Each forming process is scattered in different independent equipment or manual operation table. The carton blanks need to be transferred between processes by manual or auxiliary conveying devices. This not only results in large equipment footprint and high labor costs, but also in long process connection time, making it difficult to meet the requirements of high efficiency and high consistency for large-scale production.

[0004] Therefore, there is an urgent need in this field for a fully automated carton forming equipment and method that can achieve fully automated forming throughout the entire process and ensure that the actions of each station are closely and orderly connected. Summary of the Invention

[0005] To address the problems in the existing technology, the present invention provides a fully automatic carton forming equipment and forming method, which realizes fully automated forming, with compact and orderly connection of each station's actions, and can effectively overcome various forming defects caused by material springback.

[0006] The technical solution adopted by this invention to solve its technical problem is a fully automatic carton forming equipment, comprising:

[0007] Support platform, serving as the foundation for installation;

[0008] A conveyor chain, set on the support platform, is used to sequentially transfer cardboard box blanks along the material conveying direction;

[0009] The first to seventh workstations, arranged sequentially along the material transport direction of the conveyor chain, are each equipped with a position detection sensor, and each drive component is also equipped with a position detection sensor.

[0010] The first station is configured to separate stacks of cardboard box blanks one by one and feed them to the conveyor chain;

[0011] The second station is configured to stand up and stack the front side panel, rear side panel and end panel of the flattened cardboard box blank, while pressing the first folding ears on the left and right sides of the front extension panel.

[0012] The third station is configured to push the stacked bolt into the lock opening to lock the end plate, and at the same time press out a second folded ear on at least one edge of the left and right folded plates.

[0013] The fourth station is configured to assemble the horizontal left and right folding plates into a vertical position.

[0014] The fifth station is configured to bend the upright left and right folded plates inward along their fold lines and flatten and shape them.

[0015] The sixth station is configured to flatten the upright front extension plate and press it into the box body;

[0016] The seventh station is configured to remove the formed finished cardboard box from the conveyor chain and output it.

[0017] Furthermore, the second station is equipped with an adsorption assembly, a limiting rod, a push plate assembly, a holding structure, and a folded ear forming component;

[0018] The adsorption component is used to vertically press down the flat blank.

[0019] The limiting rods are respectively located on the front and rear sides of the second station, and are used to squeeze the front and rear edges of the blank during the pressing process to make the side plate flip upward.

[0020] The pusher assembly is located on the left and right sides of the second work station and is used to push the end plates on the same side toward the center to overlap.

[0021] The retaining structure is used to temporarily press and position the inner single plate after it has been rotated into place; the folding ear forming component is used to press out the first folding ears on the left and right sides of the front extension plate.

[0022] Furthermore, the third workstation is equipped with a locking actuator and a folding ear forming mechanism on both the left and right sides; the locking actuator includes push rods symmetrically arranged on the left and right sides of the third workstation and drive cylinders connected to them, the push rods are directly opposite the already stacked lock tongue, and are used to push the lock tongue into the corresponding lock mouth; the folding ear forming mechanism includes an upper pressing component and a lower supporting component arranged on the left and right sides of the third workstation, the upper pressing component and the lower supporting component move relative to each other, and are used to press out the second folding ear on the edge of the left and right folding plate.

[0023] Furthermore, the fourth workstation is equipped with a pressing component, a lifting component, a straightening component, and a guiding mechanism on both the left and right sides; the pressing component is located at the top of the fourth workstation and is used to press and fix the bottom plate of the box onto the conveyor chain; the lifting component is located on the left and right sides of the fourth workstation and is used to push the horizontal left and right folded edge plates upward; the straightening component is located on the left and right sides of the fourth workstation and is used to abut against the folded edge plates from the outside to keep them in a vertical position when they are upright; the guiding mechanism is symmetrically located on the left and right sides of the fourth workstation and is used to constrain and guide the folded edge ears of the folded edge plates during the process of the folded edge plates being upright.

[0024] Furthermore, the guiding mechanism includes a driving assembly and a guide plate. The driving assembly includes a first driving unit, a second driving unit, and a third driving unit that are sequentially connected in a three-dimensional direction. The guide plate is connected to the output end of the third driving unit. The shape of the guide plate is designed based on the motion trajectory of the folded edge plate when it is erected, and its surface facing the folded edge plate is a sliding mating surface.

[0025] Furthermore, the fifth workstation is equipped with an inner flange structure and a pressing edge structure on both the left and right sides; the inner flange structure includes a base that can move along a direction perpendicular to the conveyor chain and a bracket set on the base. A push plate with an arc-shaped inclined surface is fixed on the bracket for gradually pushing the left and right folded edge plates into the box in an inward direction; the bracket is also equipped with a snap-on plate assembly for snapping and fixing the folded edge plates that have entered the box; the pressing edge assembly is set on the bracket and includes a pressing edge block that can move up and down. The bottom of the pressing edge block is provided with a shaping groove that matches the top of the folded edge plate for secondary shaping of the folded edge plate after bending.

[0026] Furthermore, the buckle assembly includes a support rod, a rotating plate, and a drive cylinder. The support rod is horizontally mounted on the bracket, and the rotating plate is rotatably connected to the support rod. Both ends of the rotating plate are connected to the drive cylinder and the pressing plate, respectively. The free end of the pressing plate has an arc-shaped pressing surface. The drive cylinder drives the pressing plate to swing around the support rod through the rotating plate to realize the buckling action of the left and right folded edge plates.

[0027] Furthermore, a leveling component and a pressing component are provided on either the left or right side of the sixth workstation; the leveling component includes a second slide rail arranged along a first direction, a third slide rail slidably connected to the second slide rail and extending along a second direction, and a support block slidably connected to the third slide rail, with a top tongue fixed on the support block, the protruding direction of the top tongue facing the vertical front extension plate; the first direction is parallel to the conveying direction of the conveyor chain, and the second direction is perpendicular to the conveying direction of the conveyor chain; the pressing component is disposed at the top of the sixth workstation, including a driving component and a pressure plate connected to its end, for pressing the front extension plate, which has been leveled to a horizontal state, into the box body;

[0028] The leveling assembly further includes a first driving member and a second driving member. The first driving member is driven to the second slide rail and is used to drive the second slide rail to reciprocate along the first slide rail. The second driving member is driven to the support block and is used to drive the support block to reciprocate along the second slide rail.

[0029] Furthermore, the seventh station is equipped with a lifting drive and a clamp connected to its end. The clamp includes two clamping members arranged opposite each other. The distance between the two clamping members is adapted to the width of the finished paper box. The lifting drive drives the clamp to move up and down. The clamp can move horizontally along the top track to remove the finished paper box from the conveyor chain and transfer it to the discharge table.

[0030] This invention also discloses a fully automatic carton forming method, using the aforementioned fully automatic carton forming equipment, characterized by comprising the following sequentially performed process steps:

[0031] S1. Separate the stacked flat cardboard box blanks one by one and transfer them to the conveyor belt;

[0032] S2. Press down the flat blank to make the front and rear side plates stand up. Then, the push plate assemblies on the left and right sides push the inner and outer end plates towards the center in sequence to make the lock and the lock tongue aligned. At the same time, press out the first folding ears on the left and right sides of the front extension plate.

[0033] S3. Push the bolt into the lock opening to lock the end plate, and at the same time press out the second folded ears on the edges of the left and right folded plates;

[0034] S4. Press and fix the bottom plate of the box, push the horizontal left and right folded plates upward and keep them vertical, and at the same time constrain and guide the second folded ear to prevent it from elastically expanding.

[0035] S5. Push the left and right folded edge plates inward at an angle and press them down to flatten them. Then, perform a second shaping on the top of the folded edge plates.

[0036] S6. Move the top tongue to the front of the upright front extension plate and push it to a horizontal position, then press the front extension plate down into the box body;

[0037] S7. Clamp the finished cardboard box, remove it from the conveyor chain, and transfer it to the discharge table.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] This invention, by arranging seven functional stations sequentially along a conveyor chain, achieves fully automated forming of the cardboard box blank, from flat feeding, side panel erection and end panel stacking, end panel locking and ear pre-pressing, edge panel erection, edge panel bending and shaping, front side panel folding in, to finished product output. Each station is controlled collaboratively by sensors, with actions seamlessly and orderly coordinated. This significantly improves the forming accuracy, structural strength, and product qualification rate of cardboard boxes, substantially increasing production efficiency and reducing labor costs. Attached Figure Description

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Figure 1 This is a flowchart of the paper box blank forming process at seven stations in this invention;

[0042] Figure 2 This is a front view of the first workstation in this invention;

[0043] Figure 3 This is a perspective view of the second workstation in this invention;

[0044] Figure 4 This is a perspective view of the folded ear forming component at the second station in this invention;

[0045] Figure 5 This is a perspective view of the third workstation in this invention;

[0046] Figure 6 This is a perspective view of the fourth workstation in this invention;

[0047] Figure 7 This is a perspective view of the guiding mechanism of the fourth station in this invention;

[0048] Figure 8 This is a perspective view of the fifth workstation in this invention;

[0049] Figure 9 This is a perspective view of the fifth station buckle assembly in this invention;

[0050] Figure 10 This is a perspective view of the sixth workstation in this invention;

[0051] Figure 11 This is a perspective view of the seventh workstation in this invention;

[0052] In the diagram: 1. First workstation; 1-1. Lifting platform; 1-2. First suction cup assembly;

[0053] 2. Second station; 2-1. Second suction cup assembly; 2-2. First limiting rod; 2-3. First cylinder assembly; 2-4. Second cylinder assembly; 2-5. Second cylinder; 2-6. Gear and rack transmission pair; 2-7. Paddle; 2-8. Bending cylinder; 2-9. Tip pressure plate; 2-10. Molded body;

[0054] 3. Third station; 3-1. First push rod; 3-2. Third cylinder; 3-3. Fourth cylinder; 3-4. Formed part; 3-5. Press block;

[0055] 4. Fourth station; 4-1. Seventh cylinder; 4-2. Positioning rod; 4-3. Guide plate; 4-4. Cylinder one; 4-5. Cylinder two; 4-6. Cylinder three;

[0056] 5. Fifth station; 5-1. Base; 5-2. Support; 5-3. Push plate; 5-4. Ninth cylinder; 5-5. Rotating plate; 5-6. Edge pressing plate; 5-7. First slide rail; 5-8. Support rod; 5-9. Vertical edge pressing cylinder; 5-10. Edge pressing block; 5-11. U-shaped groove;

[0057] 6. Sixth station; 6-1. Second slide rail; 6-2. Third slide rail; 6-3. Tenth cylinder; 6-4. Support block; 6-5. Eleventh cylinder; 6-6. Support plate; 6-7. Top tongue;

[0058] 7. Seventh station; 7-1. Thirteenth cylinder; 7-2. Horizontal connecting plate; 7-3. Clamping plate; 7-4. Discharge platform;

[0059] 8. Paper box blank; 8-1. Box bottom plate; 8-2. Front side plate; 8-3. Rear side plate; 8-4. Front extension plate; 8-5. First folding lug; 8-6. Rear extension plate; 8-7. Left end plate; 8-8. Left folding edge plate; 8-9. Locking opening; 8-10. Locking tongue; 8-11. Folding edge extension plate; 8-12. Second folding lug. Detailed Implementation

[0060] The directional terms involved in the technical solution of the fully automatic carton forming equipment provided by the present invention are all defined based on the material conveying direction of the carton blank 8 in the forming process.

[0061] To facilitate a clear description of the relative positions of the components, the following conventions are made: the downstream direction of material movement is defined as "front," i.e., the side closer to the discharge end, based on the operator's perspective from the feed end towards the discharge end; the upstream direction of material entry is defined as "back," i.e., the side closer to the feed end; and when facing the discharge end, the left side is "left" and the right side is "right."

[0062] It should be clearly pointed out that the aforementioned "front, back, left, and right" orientations are merely relative position references set to align with the accompanying drawings and the operational logic of the forming equipment in specific embodiments. They do not constitute any restriction on the absolute spatial orientation of the paper box blank 8 in actual packaging, transportation, or use. Any operations performed by those skilled in the art, such as overall rotation or mirror flipping, on the paper box blank 8 without departing from the essential spirit of the present invention, should be included within the scope of protection of this invention, provided that the connection relationships between its components and the forming logic remain substantially unchanged.

[0063] The present invention will be further described below with reference to specific embodiments.

[0064] The "blank" processed in this invention refers to the cardboard blank 8 before the cardboard box is formed. The cardboard blank 8 is made from a single sheet of board with foldable properties, such as cardboard, cardboard or similar material, by cutting it in one piece through conventional processes such as die-cutting and creasing.

[0065] In its initial, unformed state, the cardboard box blank 8 mainly includes the following structures: a box bottom plate 8-1 located in the central area, serving as the base of the box bottom; a front side plate 8-2 and a rear side plate 8-3 extending from the front and rear edges of the box bottom plate 8-1, respectively. The outer edge of the front side plate 8-2 further extends integrally to form a front extension plate 8-4, and the front side plate 8-2 and the front extension plate 8-4 are connected by a pre-defined fold line. Creases are pressed into the left and right edges of the front extension plate 8-4 to form the first folded ears 8-5. The outer edge of the rear side plate 8-3 also integrally extends to form a rear extension plate 8-6, and both are similarly... The rear extension plate 8-6, connected by fold lines, will form the top plate of the box after final forming; it also includes end plates 8-7 on the left and right sides of the box blank, the end plates including inner plates and outer plates; the end plates 8-7 extend outward from the left or right edge of the front plate 8-2 and the rear plate 8-3 respectively; and an outer folded edge plate assembly, the outer folded edge plate assembly including a left folded edge plate 8-8 and a right folded edge plate, which extend from the left and right edges of the box bottom plate 8-1 respectively, and each of the left folded edge plate 8-8 and the right folded edge plate has a fold line pre-set on its surface, the part above the fold line is the folded edge extension plate 8-11, which is used to bend inward during forming. In addition, the paper box blank 8 is also provided with multiple locking structures, specifically including an end plate locking structure and a folding edge locking structure. The end plate locking structure is set on the end plate 8-7 and is formed by the locking opening 8-9 on the inner plate and the locking tongue 8-10 on the outer plate. The folding edge locking structure is formed by pressing creases on one side edge of the left folding plate 8-8 and the right folding plate to form the second folding ear 8-12. The first folding ear 8-5 and the second folding ear 8-12 can utilize the elasticity of the material itself to form a tight contact with other inner walls of the box body through the rebound force after bending and forming, thereby generating a squeezing force to achieve an auxiliary locking function.

[0066] Example 1

[0067] Based on the unique structure of the aforementioned paper box blank 8, such as Figures 1 to 5 As shown in the figure, this embodiment provides a detailed description of the fully automatic carton forming equipment provided by the present invention.

[0068] In this embodiment, the fully automatic carton forming equipment includes a support platform serving as the installation base, a conveyor chain disposed on the support platform for transferring carton blanks 8, operating tables spaced apart on the conveyor chain, and a frame 11 arranged around, on top of, and at the bottom of the support platform. Along the material transport direction of the support platform, from the inlet to the outlet, the equipment is sequentially divided into a first station 1 to a seventh station 7. The conveyor chain, carrying the operating tables, stops operating at each station, restarts after the station completes its operation, and moves the blanks to the next station. The orderly transfer of blanks between stations is achieved through the conveyor chain.

[0069] Preferably, each workstation is equipped with a position detection sensor to monitor in real time whether the blank has accurately reached the predetermined position. Each drive component is also equipped with a position detection sensor to ensure that each movement stroke is accurate, thereby ensuring the reliability and stability of the entire molding process. Through the coordinated operation of the sensors and the drive components, closed-loop control is achieved, which not only ensures the consistency of molding accuracy but also allows for timely shutdown in case of abnormalities, effectively avoiding blank damage or equipment jamming caused by movement deviations and significantly reducing the scrap rate.

[0070] The first workstation 1 is mainly used for the automatic lifting and feeding of stacked blanks. This workstation is equipped with a lifting platform 1-1, on which stacked cardboard box blanks 8 are pre-placed. The platform itself raises the blanks step-by-step to a picking height compatible with the conveyor chain. The storage capacity of the lifting platform 1-1 is determined by its initial height and can be flexibly adjusted according to actual production needs. A fiber optic through-beam sensor is installed at the loading endpoint to accurately detect whether the cardboard box has reached the preset picking position. When the blank arrives, the first suction cup assembly 1-2 on the frame 11 above the feeding end is activated, using vacuum adsorption to pick up the topmost cardboard box blank 8 and transfer it to the conveyor chain at the second workstation 2. The fiber optic through-beam sensor ensures precise and controllable triggering of the picking action, avoiding the phenomenon of the suction cup picking up empty or repeatedly picking up multiple layers of blanks, further improving the reliability and stability of the feeding process.

[0071] The second station 2 is configured to stand up and fold the front side panel 8-2, rear side panel 8-3, and end panels of the flattened cardboard box blank 8. The second station 2 is equipped with an adsorption assembly, a limiting rod, a push plate assembly, a holding structure, and a folding ear forming component; the adsorption assembly is used to vertically press down the flattened blank; the limiting rod is located on the front and rear sides of the second station 2, and is used to squeeze the front and rear edges of the blank during the pressing process to make the side panels flip upward; the push plate assembly is located on the left and right sides of the second station 2, and is used to push the end panels on the same side to overlap towards the center; the holding structure is used to temporarily press and position the inner panel after it has rotated into place; the folding ear forming component is used to press out the first folding ears 8-5 on the left and right sides of the front extension plate 8-4.

[0072] First, the adsorption assembly includes a second suction cup assembly 2-1 located at the top of the second workstation 2. The first suction cup assembly 1-2 picks up the workpiece and releases it above the conveyor chain where the second workstation 2 is located. At this time, the second suction cup assembly 2-1 immediately takes over the adsorption of the workpiece. After the second suction cup assembly 2-1 has firmly adsorbed the workpiece, the first suction cup assembly 1-2 immediately removes the vacuum and retracts along the original path, completing the suction cup handover.

[0073] Subsequently, driven by the first cylinder assembly 2-3, the second suction cup assembly 2-1 carries the flattened blank vertically downward, pressing it into the material bin formed by the first limiting rods 2-2 located on the front and rear sides of the second work station 2. During the pressing process, the first limiting rods 2-2 located on the front and rear sides apply pressure to the front and rear edges of the blank, forcing the front side plate 8-2 and the rear side plate 8-3 to flip upward around the horizontal crease between them and the bottom plate to a vertical state.

[0074] At this time, the bottom plate of the blank is placed flat on the surface of the conveyor chain, the front side plate 8-2 and the rear side plate 8-3 are upright facing each other, and the end plates extending from the left and right edges of the front side plate 8-2 and the rear side plate 8-3, namely the front end plate and the rear end plate constituting the left end plate, and the front end plate and the rear end plate constituting the right end plate, still maintain a vertical posture coplanar with the side plates they are connected to, and are located at two different positions at the front and rear of the box body, and have not yet been folded.

[0075] Based on this, the second cylinder assemblies 2-4 located on the left and right sides of the workstation begin to perform the stacking operation of the end plates. Each side of the second cylinder assembly 2-4 includes two second cylinders 2-5, which are arranged opposite each other along the conveying direction. The extension and retraction direction of their piston rods is parallel to the conveyor chain, and they can move towards each other. Taking the left side as an example, one of the second cylinders 2-5 corresponds to the front end plate located on the left edge of the front side plate 8-2, and the other second cylinder 2-5 corresponds to the rear end plate located on the left edge of the rear side plate 8-3. The piston rod ends of the two cylinders are respectively facing the outer side of their respective end plates.

[0076] To further ensure precise alignment of the locking lug 8-9 and the locking tongue 8-10 after stacking, the timing of the actions of the two second cylinders 2-5 is designed to be slightly different: the second cylinder 2-5 used to push the inner panel moves first, extending its piston rod to rotate the inner panel to the predetermined stacking position before retracting; subsequently, the second cylinder 2-5 used to push the outer panel moves again, stacking the outer panel outside the inner panel before retracting. This sequential pushing method effectively avoids interference between the two panels during stacking, while ensuring accurate alignment of the locking lug 8-9 on the inner panel and the locking tongue 8-10 on the outer panel at the moment of stacking.

[0077] When performing the end-plate stacking operation at the second workstation 2, the inner plate, after being disengaged from the push of the front second cylinder 2-5, may experience a certain degree of angular rebound due to its material elasticity, thus interfering with the subsequent rotational stacking path of the outer plate. Therefore, this workstation is specially equipped with a retaining structure to temporarily press and position the inner plate after it has rotated into place. This retaining structure is installed on the support platform where the second suction cup assembly 2-1 is located. This support platform is driven and raised by the first cylinder assembly 2-3 and mainly includes a power mechanism, a gear and rack transmission pair 2-6, and a flip-up lever 2-7. The workflow is as follows: After the inner panel is pushed to the predetermined stacking position by the front second cylinder 2-5, the power mechanism drives the gear and rack transmission pair 2-6 to rotate 180° around its axis. One axial end of the gear is fixedly connected to the lever 2-7. The lever 2-7 is initially vertically downward, and rotates downward by 180° as the gear rotates, finally pressing against the outer surface of the inner panel, thereby effectively suppressing its rebound tendency. Afterward, the rear second cylinder 2-5 is activated again, pushing the outer panel to rotate and stack. The lever 2-7 is only about 1mm thick, and its pressing state does not substantially affect the tightness of the fit between the inner and outer panels. By designing the sequence of folding the front edge first, pressing down the lever, and then folding the back edge, it ensures that the end panels of the carton can be tightly stacked and smoothly enter the subsequent workstations, solving the problem of stacking misalignment caused by the rebound of the cardboard material.

[0078] After all actions at the second workstation 2 are completed, the first cylinder assembly 2-3 rises as a whole, causing the support platform and the holding structure to reset, making room for the blank to be transferred to the next workstation.

[0079] Preferably, the second station 2 also integrates an ear-forming component to press first ears 8-5 on the left and right sides of the front extension plate 8-4, providing an auxiliary locking structure for the subsequent edge-folding and wrapping process. Creases are pre-processed on the left and right edges of the front extension plate 8-4 of the blank. A bending component is provided on each of the left and right sides of the support platform where the second suction cup assembly 2-1 is located. Each bending component consists of a bending cylinder 2-8 and a pointed pressure plate 2-9 fixed to the front end of its cylinder rod. The pointed pressure plate 2-9 faces the creases on the edge of the front extension plate 8-4. When the bending cylinder 2-8 is activated, its cylinder rod extends forward, driving the pointed pressure plate 2-9 to press against the crease area. With the reverse support of the forming body 2-10, the left and right sides of the front extension plate 8-4 are compressed and bent, thereby forming symmetrical first ears 8-5. The first folding lug 8-5, during subsequent molding, utilizes the elastic deformation of the material to abut against the inner wall of the box, playing an auxiliary locking role and enhancing the structural stability of the box after final molding.

[0080] The third station 3 is configured to perform the following actions: First, precisely push the overlapping and aligned locking tongues 8-10 from the second station 2 into the corresponding locking slots 8-9 to complete the final locking of the left and right end plates; Second, press a second folded lug 8-12 into at least one edge of the left folded plate 8-8 and the right folded plate, laying the structural foundation for subsequent folding and auxiliary locking. The two operations are performed simultaneously or alternately without interference.

[0081] Specifically, locking actuators and folding lug forming mechanisms are symmetrically arranged on the left and right sides of the third workstation 3. The locking actuator includes a first push rod 3-1, the axis of which is directly opposite the position of the already stacked locking tongue 8-10. Each first push rod 3-1 is fixedly connected to the piston rod end of a third cylinder 3-2. When the sensor detects that the blank is accurately positioned, the third cylinders 3-2 on both sides start synchronously, their piston rods extend smoothly, driving the first push rod 3-1 forward in the horizontal direction, accurately pushing the locking tongue 8-10 pre-formed on the outer single plate into the corresponding locking slot 8-9 on the inner single plate. This pushing process relies on the stroke control of the third cylinder 3-2 to ensure the insertion depth between the locking tongue 8-10 and the locking slot 8-9, thereby completing the reliable locking of the left end plate and the right end plate. After the locking tongue 8-10 and the locking port 8-9 are engaged, the inner and outer single plates of the left end plate and the right end plate are firmly bound together as one, effectively preventing the end plates from loosening or misaligning due to external forces during subsequent molding processes.

[0082] The folding ear forming mechanism includes second bending components located on the left and right sides of the third workstation 3. Each component consists of an upper pressing component and a lower supporting component. The upper pressing component and the lower supporting component move relative to each other to press the second folding ear onto the edges of the left and right folding plates. The upper pressing component includes a fourth cylinder 3-3 located at the top and a pressing block 3-5 with a pointed tip at the end of the cylinder rod. The lower supporting component includes two fifth cylinders located below the fourth cylinder 3-3. The two fifth cylinders are spaced apart along the edge direction of the folding plates. A forming component 3-4 is fixedly mounted on the top of the piston rod of each fifth cylinder. The forming surfaces of both forming components 3-4 are designed as inclined planes, tilting away from the side where the second folding ear is to be pressed. Together, they enclose a V-shaped operating space that is wider at the top and narrower at the bottom. When the blank enters the third station 3, the left folded plate 8-8 or the right folded plate to be pressed is placed horizontally above the forming parts 3-4 of the two fifth cylinders, with the pre-prepared strip creases on its edges facing the pressure block 3-5. The fourth cylinder 3-3 is activated, its piston rod extends downward, driving the tip of the pressure block 3-5 connected to the rod end to move vertically downward. The tip of the pressure block 3-5 first contacts the upper surface of the edge of the folded plate and applies downward concentrated pressure along the crease line; at the same time, the two fifth cylinders are activated synchronously, their piston rods push the forming part 3-4 upward, so that the two inclined forming surfaces support the bottom surface of the edge of the folded plate from below and form opposing pressure with the tip of the pressure block 3-5 above. Under the synergistic effect of the downward pressure of the tip of the pressure block 3-5 and the upward movement of the inclined surface of the forming part 3-4, the edge of the folded plate is forcibly bent along the pre-processed creases, the material undergoes plastic deformation, and finally forms a downward-protruding V-shaped second fold. After the second folded ear is pressed, when it is flipped into the box body at the fifth station 5 along with the folded edge plate, it utilizes the elastic deformation characteristics of its own material—that is, the springback tendency after bending—to make its protruding part closely abut against the inner wall surface of the corresponding front side plate 8-2 or rear side plate 8-3. The positive pressure generated by contact friction forms an auxiliary locking effect, which can effectively enhance the position retention ability of the folded edge plate after flipping without the need for additional connectors or glue application process.

[0083] The fourth workstation 4 is equipped with a lifting component, a straightening component, and a guiding mechanism on both its left and right sides. The lifting component is located on both sides of the fourth workstation 4 and is used to push the horizontal left folded plate 8-8 and right folded plate upwards. The straightening component is located on both sides of the fourth workstation 4 and is used to abut against the folded plate from the outside to keep it in a vertical position when it is erected. The guiding mechanism is symmetrically located on both sides of the fourth workstation 4 and is used to constrain and guide the folded ears on the edge of the folded plate during the process of erecting the folded plate.

[0084] The platform panels on both sides of the fourth workstation 4 have hollowed-out structures. Within these hollowed-out structures are lifting components located below the platform. These lifting components are driven by the seventh cylinder 4-1 to achieve an upward, oblique lifting motion. When the lifting components rise obliquely, they can push the horizontally positioned left and right folded edge plates 8-8 and 8-8 vertically upwards. During the process of the seventh cylinder 4-1 driving the lifting components to vertically lift the left and right folded edge plates 8-8 and 8-8, the lifting force and lateral thrust on the folded edge plates will cause the bottom plate to shift back and forth or tilt left and right on the conveyor chain. Therefore, a clamping component (not shown in the figure) is also provided on the frame at the top of the fourth workstation 4 to clamp and fix the bottom plate 8-1 onto the conveyor chain. The clamping plate carried by the sixth cylinder effectively counteracts the aforementioned external force interference by firmly constraining the bottom plate onto the conveyor chain. The clamping assembly (not shown in the figure) is installed on the frame at the top of the fourth station 4. Specifically, the clamping assembly includes a sixth cylinder installed on the frame at the top of the fourth station 4 and a clamping plate connected to the bottom of the cylinder rod. When the sensor detects that the box blank has accurately arrived at the fourth station 4, the sixth cylinder receives the signal and drives its piston rod to extend downward, pressing the box bottom plate 8-1 firmly onto the conveyor chain to prevent the box from shifting position during subsequent plate-standing operations.

[0085] The straightening assembly includes an eighth cylinder 4-4 located on the left and right sides of the fourth station 4. The cylinder rod end is connected to a positioning rod 4-5 parallel to the direction of the conveyor chain. After receiving the signal that the left folding plate 8-8 and the right folding plate are upright, the positioning rod 4-5 quickly extends outward to the left folding plate 8-8 and the right folding plate to keep them in a vertical state.

[0086] To prevent the pre-formed second folded ears on the edges of the left and right folded plates from expanding outwards due to material elasticity during the erection process, which could prevent the folded plates from standing up smoothly or cause interference between the folded ears and adjacent plates, symmetrical guide mechanisms are also provided on the left and right sides of the fourth workstation 4. These mechanisms mainly include a three-dimensional power guide assembly and a guide plate 4-3. The three-dimensional power guide assembly is controlled by cylinders 4-4, 4-5, and 4-6 to achieve motion control in three dimensions: forward / backward, left / right, and up / down. The cylinders are connected in series via connectors: the piston rod of cylinder 4-4 is connected to the first frame, driving the first frame to move in the forward / backward direction; cylinder 4-5 is fixedly installed on the first frame, and its piston rod is connected to the second frame, driving the second frame to move in the left / right direction; cylinder 4-6 is fixedly installed on the second frame, and its piston rod is connected to the guide plate 4-3 via the third frame. The shape of the guide plate 4-3 is designed to mimic the movement trajectory of the left folding plate 8-8 and the right folding plate when they are erected. A plastic sliding film is attached to the surface facing the folding plate to reduce sliding friction with the folding plate.

[0087] The guide plate 4-3 adopts an upward-then-away withdrawal sequence. This is to prevent the edge of the guide plate 4-3 from hooking onto the second folding lug or edge plate body when directly pulled outwards horizontally. The operation of first lifting it upwards away from the edge plate area and then retracting horizontally effectively avoids this risk. The cylinder 4-4 can also fine-tune the overall front-to-back position of the folding lug guide mechanism according to the actual positional deviation of the blank at the workstation, adapting to the guiding requirements of different sized cartons. This significantly improves the equipment's compatibility with cartons of different sizes, enabling rapid changeover without replacing guide components, reducing production changeover time and spare parts costs.

[0088] The fifth station 5 is configured to bend the left folded edge plate 8-8 and the folded edge extension plate 8-11 of the right folded edge plate inward through the inward flanging structures located on the left and right sides of the blank. After bending, the left end plate and the right end plate are respectively covered by the corresponding folded edge extension plate 8-11. After the sensor of the fifth station 5 detects the arrival of the blank, the base 5-1 of the inward flanging structure moves to the position of the blank along the first slide 5-7 set perpendicular to the direction of the conveyor chain. A push plate 5-3 with an arc-shaped inclined surface is fixed on the base 5-1 by the bracket 5-2. During the movement of the base 5-1, the push plate 5-3 uses its arc-shaped inclined surface structure to gradually push the corresponding folded edge extension plate 8-11 in an inward direction to achieve initial bending guidance. Subsequently, the buckle plate assembly 5-5 set on the bracket 5-2 further presses the already tilted folded edge extension plate 8-11 downward and flattens it.

[0089] The snap-on assembly 5-5 includes a ninth cylinder 5-4, a rotating plate 5-5, a pressing plate 5-6, a bearing, and a support rod 5-8. The support rod 5-8 is arranged parallel to the direction of the conveyor chain and is located between two supports 5-2. The middle part of the support rod 5-8 passes through the rotating plate 5-5 through the bearing and is rotatably connected to it. One end of the rotating plate 5-5 is fixed to the cylinder rod of the ninth cylinder 5-4, and the other end is connected to the pressing plate 5-6. The pressing plate 5-6 and the ninth cylinder 5-4 are located on both sides of the support rod 5-8, forming a seesaw structure. When the piston rod of the ninth cylinder 5-4 pushes upward, the pressing plate 5-6 on the other side of the support rod 5-8 rotates and descends in the opposite direction due to the lever action of the rotating plate 5-5. The other end of the pressing plate 5-6 is a downwardly bent arc structure, which uses its arc end to smoothly and evenly snap the folded edge extension plate 8-11 downward. To prevent the pressing plate 5-6 from scratching the box surface during the pressing process, a flexible partition is attached to the side of the pressing plate 5-6 that contacts the folding plate, which effectively protects the appearance of the cardboard surface while ensuring the forming quality.

[0090] Although the pressing plate 5-6 has fastened the folded edge extension plate 8-11 into the box, in actual production, due to the elastic recovery characteristics of the cardboard material itself, the edge or bending area of ​​the folded edge extension plate 8-11 may slightly warp after the pressing plate 5-6 retracts. Therefore, this embodiment provides an additional pressing structure on the bracket 5-2 to perform secondary shaping of the crease after bending. This pressing structure includes a vertical pressing cylinder 5-9 fixed to the bracket 5-2. The bottom of the cylinder rod of the vertical pressing cylinder 5-9 is connected to a pressing block 5-10. The bottom of the pressing block 5-10 is provided with a U-shaped groove 5-11, which is the same width as the top of the flipped left folded edge plate 8-8 or the right folded edge plate. After the left folding plate 8-8 or the right folding plate completes the bending, the vertical pressing cylinder 5-9 moves downward, and the U-shaped groove 5-11 of the pressing block 5-10 is inserted into the crease to press and maintain the shape. After completion, the vertical pressing cylinder 5-9 moves upward back to its original position.

[0091] This secondary shaping structure, through the wrapping clamping of the fold lines by the U-shaped grooves 5-11, effectively eliminates the warping deformation of the folded edge extension plate 8-11 caused by material springback, ensuring that the folded edge plate maintains a flat posture before entering the next processing station, significantly improving the dimensional accuracy and appearance flatness of the final formed box. The combined design of this flexible partition and the U-shaped groove 5-11 shaping structure ensures forming quality while also protecting the product's appearance, making it particularly suitable for high-quality paper box packaging needs with printed or laminated surfaces.

[0092] The sixth station 6 is equipped with a flattening component and a pressing component on either side. The upright front extension plate 8-4 is bent horizontally by the flattening component, changing its posture from vertical to horizontal, in preparation for subsequent pressing into the box. The pressing component is located at the top of the sixth station 6 and includes a driving component and a pressure plate connected to its end, used to press the front extension plate 8-4, which has been flattened to a horizontal state, into the box.

[0093] Specifically, the leveling assembly is located on the left or right side of the sixth station 6, and is mounted on a second slide rail 6-1 arranged parallel to the direction of the conveyor chain. A set of third slide rails 6-2 arranged perpendicular to the direction of the conveyor chain is slidably connected to the second slide rail 6-1, that is, the third slide rails 6-2 can reciprocate along the second slide rail 6-1 in the back-and-forth direction. A tenth cylinder 6-3 is provided on one side of the second slide rail 6-1, parallel to its running trajectory. The end of the cylinder rod of the tenth cylinder 6-3 is fixedly connected to the third slide rail 6-2, and is used to drive the third slide rail 6-2 to move back and forth along the second slide rail 6-1. A support block 6-4 is slidably connected to the top of the third slide rail 6-2. The support block 6-4 can reciprocate along the extension direction of the third slide rail 6-2, i.e., perpendicular to the conveyor chain. An eleventh cylinder 6-5 is provided on one side of the third slide rail 6-2, parallel to its running trajectory. The end of the cylinder rod of the eleventh cylinder 6-5 is fixedly connected to the support block 6-4, and is used to drive the support block 6-4 to move laterally along the third slide rail 6-2. A support plate 6-6 is fixedly installed on the top of the support block 6-4. A top tongue 6-7 extends rearward from the side of the support plate 6-6 facing the box blank. The extension direction of the top tongue 6-7 is directly opposite the vertical front extension plate 8-4.

[0094] Once the box blank is in place, the eleventh cylinder 6-5 is activated first, pushing the support block 6-4 and the support plate 6-6 above it to move laterally along the third slide rail 6-2, so that the top tongue 6-7 moves accurately to the front of the vertical front extension plate 8-4 to complete the lateral alignment; then the tenth cylinder 6-3 is activated, pushing the third slide rail 6-2 as a whole to move along the second slide rail 6-1 to the rear of the conveying direction, i.e., the feeding end, causing the support plate 6-6 and the top tongue 6-7 to move backward synchronously. During the movement, the top tongue 6-7 contacts and pushes the front extension plate 8-4, gradually pushing it from a vertical position to a horizontal position; after the front extension plate 8-4 is flattened, the twelfth cylinder at the top of the sixth station 6 is activated, its piston rod extends downward, driving the pressure plate connected to the bottom of the cylinder rod to descend vertically synchronously, pressing the already horizontal front extension plate 8-4 further downward into the box body, so that it is flatly stacked on the bottom surface of the box.

[0095] By sequentially executing three steps—lateral alignment, longitudinal flattening, and vertical pressing—the sixth station 6 achieves the accurate flipping and final placement of the front extension plate 8-4 from vertical to horizontal. Compared to the traditional simple pressing method, this embodiment, through a two-step approach of pre-flattening followed by pressing, effectively avoids twisting or wrinkling of the front extension plate 8-4 due to uneven force during the folding process. This method is particularly suitable for blanks with thicker cardboard or shallower fold lines, significantly improving the forming quality.

[0096] The seventh station 7 serves as the unloading station for the entire forming process and is also the end of the conveyor chain. After the formed cardboard box is transported to this station, a clamp driven by the thirteenth cylinder 7-1 located at the top of the seventh station 7 performs the unloading action. The clamp includes a horizontal connecting plate 7-2, which is fixedly connected to the end of the piston rod of the thirteenth cylinder 7-1 and is driven by the thirteenth cylinder 7-1 to perform vertical lifting and lowering movements. Two vertically extending clamping plates 7-3 are spaced apart at the bottom of the horizontal connecting plate 7-2. The distance between the two clamping plates 7-3 is adapted to the width of the finished cardboard box, ensuring that the clamping plates 7-3 can respectively fit against the left and right outer walls of the box body when clamped. When the finished cardboard box reaches the predetermined discharge position of the seventh station 7 via the conveyor chain, the two clamping plates 7-3 descend synchronously under the drive of the thirteenth cylinder 7-1, respectively clamping the left and right outer walls of the blank. Subsequently, the clamping plates 7-3 rise with the thirteenth cylinder 7-1 to lift the finished cardboard box and move it forward along the top track to the discharge platform 7-4 for discharge, thus completing the entire automated forming process. This discharge method, by clamping the finished box from the outer wall, avoids direct contact with the top or opening of the box, effectively preventing deformation of the formed cardboard box during the discharge process. It is especially suitable for open cardboard box structures where the top plate is not completely closed, ensuring the integrity of the box shape during discharge.

[0097] It should be noted that in Embodiment 1 above, the stroke control and action timing of each cylinder can be centrally controlled by a programmable logic controller (PLC). Each position detection sensor and position sensor feeds back detection signals to the controller in real time, and the controller sends action commands to each drive component according to preset program logic. This control method is a conventional technique in the art and will not be elaborated further here. Furthermore, the first to thirteenth cylinders and their numbers described in the above embodiments are only used to distinguish drive components with different workstations and functions, and do not constitute any limitation on the number, model, or installation method of cylinders. Those skilled in the art can select cylinders, electric cylinders, hydraulic cylinders, or other equivalent drive components to achieve the same drive function according to actual needs.

[0098] Example 2

[0099] The fully automatic carton forming method provided by the present invention will be described in detail below with reference to a preferred embodiment of the forming method. This embodiment is implemented using the fully automatic carton forming equipment described in the above-mentioned equipment embodiment, and mainly includes the following sequential process steps:

[0100] Based on the above equipment structure, the fully automatic carton forming method disclosed in this invention includes the following sequential process steps:

[0101] S1. Place the stack of flat cardboard box blanks 8 on the lifting platform 1-1, lift it to the material picking height, and then the first suction cup assembly 1-2 picks up a single blank and transfers it to the conveyor chain.

[0102] S2. The second suction cup assembly 2-1 takes over to adsorb the blank and presses it into the hopper. The first limiting material rod 2-2 squeezes to make the front side plate 8-2 and the rear side plate 8-3 stand up. Then, the second cylinders 2-5 on the left and right sides push the inner single plate and the outer end single plate towards the center in sequence, so that the locking mouth 8-9 and the locking tongue 8-10 are aligned one by one. At the same time, the first folding ears 8-5 are pressed out on the left and right sides of the front extension plate 8-4.

[0103] S3. The third cylinders 3-2 on the left and right sides drive the first push rod 3-1 to push the locking tongue 8-10 into the locking port 8-9, completing the end plate locking; at the same time, the fourth cylinder 3-3 above and the two fifth cylinders below cooperate to press out the second folded ears on the edges of the left folded plate 8-8 and the right folded plate.

[0104] S4. The sixth cylinder at the top presses down on the bottom plate, the seventh cylinder 4-1 drives the lifting assembly to push the horizontal left folded plate 8-8 and right folded plate upward, and the eighth cylinder 4-4 drives the positioning rod 4-5 to keep them vertical; the guiding mechanism simultaneously constrains and guides the second folded ear to prevent it from elastically expanding.

[0105] S5. The push plate 5-3 of the inner flange structure pushes the left flange plate 8-8 and the right flange plate inward with an arc slope. The buckle plate assembly 5-5 presses them down and flattens them. Then the U-shaped groove 5-11 of the pressing edge structure performs secondary shaping on the top of the flange plate.

[0106] S6. The eleventh cylinder 6-5 drives the top tongue 6-7 to move laterally to the front of the vertical front extension plate 8-4. The tenth cylinder 6-3 pushes the top tongue 6-7 to move longitudinally to push the front extension plate 8-4 to a horizontal state. Then, the twelfth cylinder at the top drives the pressure plate to move downward and press it into the box.

[0107] S7. The thirteenth cylinder 7-1 drives the clamp to descend and clamp the left and right outer walls of the finished paper box. After rising and lifting, it moves along the track to the discharge platform to complete the discharge.

[0108] Throughout the entire conveying process, the conveyor chain sequentially transfers the blanks between each workstation. In summary, the fully automatic carton forming equipment provided by this invention, by rationally arranging multiple functional workstations sequentially along the conveying direction and coordinating the compact and orderly action connections between each workstation, achieves fully automated operation of the carton blank 8 from a flat state to three-dimensional forming, effectively improving production efficiency and forming quality. Furthermore, the action of each workstation is collaboratively controlled by corresponding position detection sensors and cylinder stroke sensors to ensure precise connection and reliable operation of each forming step.

[0109] It should be noted that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple improvements can be made without departing from the concept of the present invention, and all such improvements should be considered to fall within the scope of protection of the present invention.

Claims

1. A fully automatic cardboard box forming equipment, characterized in that, include: Support platform, serving as the foundation for installation; A conveyor chain, set on the support platform, is used to sequentially transfer cardboard box blanks along the material conveying direction; The first to seventh workstations are arranged sequentially along the material transport direction of the conveyor chain; The first station is configured to separate stacks of cardboard box blanks one by one and feed them to the conveyor chain; The second station is configured to stand up and stack the front side panel, rear side panel and end panel of the flattened cardboard box blank, while pressing the first folding ears on the left and right sides of the front extension panel. The third station is configured to push the stacked bolt into the lock opening to lock the end plate, and at the same time press out a second folded ear on at least one edge of the left and right folded plates. The fourth station is configured to assemble the horizontal left and right folding plates into a vertical position. The fifth station is configured to bend the upright left and right folded plates inward along their fold lines and flatten and shape them. The sixth station is configured to flatten the upright front extension plate and press it into the box body; The seventh station is configured to remove the formed finished cardboard box from the conveyor chain and output it.

2. The fully automatic carton forming equipment according to claim 1, characterized in that, The second station is equipped with an adsorption assembly, a limiting rod, a push plate assembly, a holding structure, and a folded ear forming component; The adsorption component is used to vertically press down the flat blank. The limiting rods are respectively located on the front and rear sides of the second station, and are used to squeeze the front and rear edges of the blank during the pressing process to make the side plate flip upward. The pusher assembly is located on the left and right sides of the second work station and is used to push the end plates on the same side toward the center to overlap. The retaining structure is used to temporarily press and position the inner single plate after it has been rotated into place; the folding ear forming component is used to press out the first folding ears on the left and right sides of the front extension plate.

3. The fully automatic carton forming equipment according to claim 1, characterized in that, The third workstation is equipped with a locking actuator and a folding ear forming mechanism on both the left and right sides. The locking actuator includes push rods symmetrically arranged on the left and right sides of the third workstation and drive cylinders connected to them. The push rods are directly opposite the already stacked lock tongue and are used to push the lock tongue into the corresponding lock opening. The folding ear forming mechanism includes an upper pressing component and a lower supporting component arranged on the left and right sides of the third workstation. The upper pressing component and the lower supporting component move relative to each other and are used to press out the second folding ear on the edge of the left and right folding plate.

4. The fully automatic carton forming equipment according to claim 1, characterized in that, The fourth workstation is equipped with a pressing component, a lifting component, a straightening component, and a guiding mechanism on both the left and right sides. The pressing component is located at the top of the fourth workstation and is used to press and fix the bottom plate of the box onto the conveyor chain. The lifting component is located on the left and right sides of the fourth workstation and is used to push the horizontal left and right folded edge plates upward. The straightening component is located on the left and right sides of the fourth workstation and is used to abut against the folded edge plates from the outside to keep them in a vertical position when they are upright. The guiding mechanism is symmetrically located on the left and right sides of the fourth workstation and is used to constrain and guide the folded edge ears of the folded edge plates during the process of the folded edge plates being upright.

5. The fully automatic carton forming equipment according to claim 4, characterized in that, The guiding mechanism includes a driving assembly and a guide plate. The driving assembly includes a first driving unit, a second driving unit, and a third driving unit that are sequentially connected in a three-dimensional direction. The guide plate is connected to the output end of the third driving unit. The shape of the guide plate is designed based on the motion trajectory of the folded edge plate when it is erected, and its surface facing the folded edge plate is a sliding mating surface.

6. The fully automatic carton forming equipment according to claim 1, characterized in that, The fifth workstation is equipped with an inward flange structure and a pressing edge structure on both the left and right sides. The inward flange structure includes a base that can move along a direction perpendicular to the conveyor chain and a bracket set on the base. A push plate with an arc-shaped inclined surface is fixed on the bracket for gradually pushing the left and right folded edge plates into the box in an inward direction. The bracket is also equipped with a snap-on plate assembly for snapping and fixing the folded edge plates that have entered the box. The pressing edge assembly is set on the bracket and includes a pressing edge block that can move up and down. The bottom of the pressing edge block is provided with a shaping groove that matches the top of the folded edge plate for secondary shaping of the folded edge plate after bending.

7. The fully automatic carton forming equipment according to claim 6, characterized in that, The snap-on assembly includes a support rod, a rotating plate, and a drive cylinder. The support rod is horizontally mounted on the bracket, and the rotating plate is rotatably connected to the support rod. Both ends of the rotating plate are connected to the drive cylinder and the pressing plate, respectively. The free end of the pressing plate has an arc-shaped pressing surface. The drive cylinder drives the pressing plate to swing around the support rod through the rotating plate to achieve the snap-on action of the left and right folded edge plates.

8. The fully automatic carton forming equipment according to claim 1, characterized in that, The sixth workstation is provided with a leveling component and a pressing component on either side. The leveling component includes a second slide rail arranged along a first direction, a third slide rail slidably connected to the second slide rail and extending along the second direction, and a support block slidably connected to the third slide rail. A top tongue is fixed on the support block, and the protruding direction of the top tongue is directly opposite to the vertical front extension plate. The first direction is parallel to the conveying direction of the conveyor chain, and the second direction is perpendicular to the conveying direction of the conveyor chain. The pressing component is located at the top of the sixth workstation and includes a driving component and a pressure plate connected to its end, used to press the front extension plate, which has been leveled to a horizontal state, into the box body. The leveling assembly further includes a first driving member and a second driving member. The first driving member is driven to the second slide rail and is used to drive the second slide rail to reciprocate along the first slide rail. The second driving member is driven to the support block and is used to drive the support block to reciprocate along the second slide rail.

9. The fully automatic carton forming equipment according to claim 1, characterized in that, The seventh station is equipped with a lifting drive and a clamp connected to its end. The clamp includes two clamping members arranged opposite each other. The distance between the two clamping members is adapted to the width of the finished paper box. The lifting drive drives the clamp to move up and down. The clamp can move horizontally along the top track to remove the finished paper box from the conveyor chain and transfer it to the discharge table.

10. A fully automatic carton forming method, using the fully automatic carton forming equipment according to any one of claims 1 to 9, characterized in that, The process steps are as follows, performed sequentially: S1. Separate the stacked flat cardboard box blanks one by one and transfer them to the conveyor belt; S2. Press down the flat blank to make the front and rear side plates stand up. Then, the push plate assemblies on the left and right sides push the inner and outer end plates towards the center in sequence to make the lock and the lock tongue aligned. At the same time, press out the first folding ears on the left and right sides of the front extension plate. S3. Push the bolt into the lock opening to lock the end plate, and at the same time press out the second folded ears on the edges of the left and right folded plates; S4. Press and fix the bottom plate of the box, push the horizontal left and right folded plates upward and keep them vertical, and at the same time constrain and guide the second folded ear to prevent it from elastically expanding. S5. Push the left and right folded edge plates inward at an angle and press them down to flatten them. Then, perform a second shaping on the top of the folded edge plates. S6. Move the top tongue to the front of the upright front extension plate and push it to a horizontal position, then press the front extension plate down into the box body; S7. Clamp the finished cardboard box, remove it from the conveyor chain, and transfer it to the discharge table.

Images