Automatic deviation correction type intelligent box folding and packaging line

Abstract

The present application belongs to the technical field of carton stacking packaging line, and particularly relates to an automatic deviation correction type intelligent carton stacking packaging line, which comprises a main conveying mechanism, a deviation correction device, a stacking adjusting conveying mechanism and a terminal conveying mechanism; the independent intelligent deviation correction device is arranged, a servo drive multi-stage gear transmission is matched with a synchronous deviation correction structure, and the packaging boxes deviated and inclined in the conveying process can be automatically corrected in real time and dynamically; when the calibrated packaging boxes enter the stacking adjusting conveying mechanism, the outer frame swings upward relative to the second leg around the sixth rotating shaft, the inner frame synchronously slides outward and extends, linkage of the two can dynamically compensate the spacing between the stacking adjusting conveying mechanism and the terminal conveying mechanism, eliminate the material conveying fault, and the multi-layer stacked packaging boxes can be smoothly and continuously transferred from the second transmission belt to the terminal conveying mechanism, so that the problems of jamming, falling and suspended deviation do not occur, and the stacking formation is ensured to be coherent and complete.

Description

Technical Field

[0001] This invention belongs to the field of stacked box packaging line technology, and particularly relates to an automatic correction type intelligent stacked box packaging line. Background Technology

[0002] With the upgrading of large-scale and flexible production in industries such as food, daily chemicals, pharmaceuticals, and light industry, the packaging of end products is showing characteristics of multi-specification, small batches, and rapid iteration. As a core process in product manufacturing, warehousing, and logistics, the level of automation, precision, and stability of stacked box packaging directly determines the yield rate, operating efficiency, and production cost control capabilities of the entire packaging production line. Currently, mainstream packaging production lines in China are comprehensively replacing manual operation and extensive automated equipment, transforming towards high-precision intelligent manufacturing. The technological shortcomings of traditional stacked box packaging equipment are becoming increasingly prominent, and it can no longer meet the stringent requirements of modern industrial production.

[0003] Traditional equipment relies entirely on rigid mechanical positioning, which easily leads to packaging box deformation, breakage, and scratches, resulting in material waste and increased production losses and quality control pressure for enterprises. In the stacking process, traditional mechanical stacking methods have poor alignment accuracy, resulting in loose stacks with inconsistent neatness and insufficient stability of the finished stack. This easily leads to stack collapse and scattering problems during subsequent warehousing, stacking, and logistics transportation, indirectly increasing logistics losses and rework costs, and failing to meet the packaging quality standards and standardized warehousing and logistics requirements of high-end products. Furthermore, traditional equipment lacks flexible adjustment capabilities, making it difficult to adapt to the needs of customized production with multiple specifications and small batches. Changeover and debugging are time-consuming and labor-intensive, severely restricting production efficiency.

[0004] Against the backdrop of industry development and technological iteration, intelligent alignment and stacking packaging lines have emerged. Relying on core technologies such as machine vision inspection, dynamic alignment algorithms, servo precision control, and intelligent stacking logic, these devices specifically address the core pain points of traditional equipment, including lack of autonomous alignment capabilities, low stacking accuracy, poor flexibility, high failure rates, and strong reliance on manual labor. They enable real-time offset detection and dynamic, precise alignment throughout the entire packaging box conveying process, as well as adaptive multi-specification box stacking with high uniformity. This effectively avoids problems such as stacking misalignment, machine jamming, box damage, and loose stacking, significantly improving stacking packaging accuracy and production stability, reducing manual intervention and material waste. Adapting to the demands of modern packaging production—characterized by multi-category, high efficiency, and high precision—these lines facilitate the full-process automation, intelligentization, and flexibility upgrade of packaging production lines, aligning with the core development trend of cost reduction, efficiency improvement, and quality enhancement in intelligent industrial manufacturing.

[0005] This invention designs an automatic correction type intelligent stacking and packaging line to solve the above problems. Summary of the Invention

[0006] Therefore, it is necessary to provide an automatic correction intelligent stacking packaging line to address the problems existing in current stacking packaging lines. This would solve the technical problems of traditional stacking equipment, such as lack of correction capability, low stacking accuracy, poor flexibility and adaptability, high failure rate, and strong reliance on manual labor, and realize the full automation and intelligent operation of packaging box conveying, correction, stacking, and unloading.

[0007] The above objectives are achieved through the following technical solutions: An automatic correction-type intelligent stacking box packaging line includes a main conveyor mechanism, a correction device, a stacking adjustment conveyor mechanism, and an end conveyor mechanism. The main conveyor mechanism is used to complete the uniform feeding and conveying of packaging boxes, providing a continuous material supply for subsequent processes. The correction device is mounted on the discharge end of the main conveyor mechanism and is used to automatically correct and calibrate packaging boxes that are offset or tilted during the conveying process in real time, ensuring uniform box posture and accurate position. It includes fixed plates, synchronous pulleys, and synchronous belts, wherein two parallel fixed plates are oscillatingly mounted on the upper side of the main conveyor mechanism, and the synchronous pulleys are rotatably mounted on the two fixed plates. Between the plates, a synchronous belt is meshed and assembled on the outside of the synchronous pulley; a buffer assembly is provided on the inner side of the synchronous belt; the synchronous belt is connected to the main conveyor mechanism and rotates synchronously with the uniform movement of the packaging boxes on the main conveyor mechanism; the stacking adjustment conveyor mechanism is connected to the discharge end of the main conveyor mechanism and is used to adaptively align and regularize the calibrated packaging boxes, stack them in layers, and adjust the spacing to adapt to the stacking operation of boxes of different specifications; the end conveyor mechanism is connected to the discharge end of the stacking adjustment conveyor mechanism and is used to stably output the regularized stack after stacking, while completing the end limiting and shaping to avoid the stack from becoming loose.

[0008] In one embodiment, the main conveying mechanism includes a frame, a support leg, adjustable feet, a conveyor belt, a drive roller, a tail roller, idlers, and a geared motor. The support leg is fixed to the bottom of the frame, and the adjustable feet are mounted on the bottom of the support leg. A vertical beam and a horizontal beam are fixed to the inner side of the frame. The drive roller and the tail roller are rotatably mounted between the frame via a first transmission shaft. The geared motor is fixed to the frame via a motor mounting plate. The output end of the geared motor is connected to the drive roller via a sprocket transmission assembly. The drive roller and the tail roller are connected by a ring transmission via the conveyor belt. Several idlers are evenly arranged inside the conveyor belt to support it. A light sensor and corresponding electrical control components are installed on the frame of the main conveying mechanism.

[0009] In one embodiment, the correction device further includes a servo motor, a U-shaped fixing rod, a first support, a second rotating shaft, a second support, a first spur gear, a second spur gear, a third rotating shaft, a fourth rotating shaft, a first bevel gear, a second bevel gear, a mounting sleeve, and a fifth rotating shaft. The U-shaped fixing rod is fixed to an upper end of the frame, and the first and second supports are respectively fixed to both sides of the U-shaped fixing rod. The mounting sleeve is fixed to the U-shaped fixing rod, and the tubular third rotating shaft is rotatably mounted on the mounting sleeve. Two parallel fixing plates are fixedly connected by multiple connecting plates, and the lower end of the third rotating shaft is fixedly connected to the two fixing plates. The second spur gear is fixedly mounted on the third rotating shaft, and the servo motor is fixedly mounted on the upper side of the second support. The output end of the servo motor is fixedly mounted with the first spur gear, and the first and second spur gears mesh with each other. A synchronous pulley is rotatably mounted between the two fixing plates via the fifth rotating shaft, and the fourth rotating shaft is rotatably mounted inside the third rotating shaft. The lower end of the rotating shaft is fixedly connected to a fifth rotating shaft near the servo motor; a first bevel gear is fixedly installed on the upper end of the fourth rotating shaft; a second rotating shaft is rotatably installed on the first support; a second bevel gear is fixedly installed on one end of the second rotating shaft, and the first and second bevel gears mesh with each other; a second sprocket is fixedly installed on the other end of the second rotating shaft; a first sprocket is fixedly installed on the first transmission shaft on which the first drive roller is installed; the first sprocket and the second sprocket are connected by a first chain; the transmission belt and synchronous belt of the first drive roller, the first tail roller, the first sprocket, the first chain, the second sprocket, the fourth rotating shaft, the first bevel gear, the second bevel gear, the fifth rotating shaft, and the synchronous pulley can maintain the same speed of rotation and movement; multiple synchronous pulleys are evenly installed between the two fixed plates; a buffer belt to prevent deformation of the upper area of ​​the synchronous belt is fixedly installed on the inner side of the upper end of the synchronous belt; and an avoidance area adapted to the buffer belt to prevent interference with the buffer belt is provided on the upper end of the synchronous pulley.

[0010] In one embodiment, two synchronous wheels are installed at both ends of the two fixed plates, and a buffer plate is fixedly installed between the two fixed plates and located between the two synchronous wheels.

[0011] In one embodiment, the stacking adjustment conveyor mechanism includes a second frame, a second conveyor belt, a second motor mounting plate, a first connecting rod, a second support leg, a second geared motor, a second sprocket drive assembly, a fourth support leg, a third geared motor, a third sprocket drive assembly, a sixth rotating shaft, a fourth sprocket drive assembly, a third bevel gear, a seventh rotating shaft, a fourth bevel gear, a telescopic drive shaft, a fifth bevel gear, an eighth rotating shaft, a rack, a third spur gear, a third support, a sixth bevel gear, a fourth support, a fifth support, a second drive roller, a ninth rotating shaft, a first adjusting roller, a second adjusting roller, and a second tail roller. The second frame is composed of an outer frame and an inner frame, with the inner frame capable of sliding relative to the outer frame. One end of the outer frame is oscillatingly mounted between two support legs via two sixth rotating shafts. The drive roller two is rotatably mounted on the outer frame via a ninth rotating shaft. The tail roller two is rotatably mounted on the inner frame. The adjusting roller one is rotatably mounted on the lower side of the inner frame via two symmetrically distributed fourth supports, located between the drive roller two and the tail roller two. The adjusting roller two is rotatably mounted on the lower side of the outer frame via two symmetrically distributed fifth supports, located below the adjusting roller one and biased towards the tail roller two. The drive roller two and the tail roller two are connected by a transmission belt two. The adjusting roller one and adjusting roller two are adjustablely mounted inside the transmission belt two. The geared motor three is fixed via a motor mounting plate two. On the outer frame; the output end of the geared motor is connected to the drive roller 2 via a sprocket drive assembly 3; the seventh rotating shaft is rotatably mounted on one side of the outer frame, and the eighth rotating shaft is rotatably mounted on one side of the inner frame; the two ends of the telescopic drive shaft are rotatably mounted on one side of the outer frame and the inner frame respectively via two third supports; the seventh rotating shaft and the sixth rotating shaft located on the same side are connected by a sprocket drive assembly 4; the sprocket mounted on the sixth rotating shaft in the sprocket drive assembly 4 is fixedly connected to the support leg 2 on the corresponding side, and the sixth rotating shaft passes through the circular hole in the middle of the sprocket; the third bevel gear is fixedly mounted on the seventh rotating shaft, the fourth bevel gear is fixedly mounted on one end of the telescopic drive shaft, and the sixth bevel gear... The fifth bevel gear is fixedly installed at one end of the eighth rotating shaft, and the third spur gear is fixedly installed at the other end of the eighth rotating shaft; the rack is fixed to the outer frame, and the third spur gear meshes with the rack; two support legs are fixedly installed on the lower side of the two fifth supports; a reduction motor is installed on the lower side of the frame, and the reduction motor and the sixth rotating shaft are connected by a sprocket transmission assembly; the motor mounting plate is fixedly installed on the lower side of the outer frame by four first connecting rods; a second connecting rod is fixedly connected in the middle of the frame; several idler rollers are evenly arranged on the inner side of the conveyor belt; a buffer pad is fixedly installed at the lower end of the support leg.

[0012] In one embodiment, the end conveying mechanism includes a frame three, a conveyor belt three, a geared motor four, a side baffle assembly, a sprocket drive assembly five, a rear baffle, a guide rod cylinder, a cylinder mounting plate, a sixth support, a roller three, and idler rollers three. The frame three has a support leg four fixed to its bottom. The roller three is divided into a drive roller three and a tail roller three, which are rotatably mounted between the frame three. The geared motor four is fixed to one side of the frame three and connected to the drive roller three via the sprocket drive assembly five. The drive roller three and the tail roller three are connected by a ring drive via the conveyor belt three. Several idler rollers three are evenly arranged inside the conveyor belt three. Multiple idler rollers three are evenly fixedly mounted on the conveyor belt three. The side baffle assembly consists of a cylinder mounting plate fixedly mounted on one side of the frame three via a sixth support, a guide rod cylinder fixedly mounted on the cylinder mounting plate, and a rear baffle fixedly mounted on the output end of the guide rod cylinder for limiting, regulating, and pushing the stacked boxes out; the side baffle assembly includes a side baffle and a buffer plate, with two side baffles symmetrically and adjustablely mounted on the conveyor belt three, and the side baffles having an inclined guide plate near the stacking adjustment conveyor mechanism; the buffer plate is mounted on the opposite wall surface of the two side baffles; each side baffle is fixedly mounted with two magnetic blocks two, and a magnetic block one is mounted on the inner side of the conveyor belt three, with the side baffles mounted on the conveyor belt three through the cooperation of the corresponding magnetic blocks one and two.

[0013] Compared with existing technologies, the advantages of this invention are: 1. This invention features an independent intelligent correction device that uses a servo-driven multi-stage gear transmission in conjunction with a synchronous correction structure to dynamically and automatically correct misaligned or tilted packaging boxes during transport. This replaces traditional mechanical rigid limits, achieving flexible and precise correction and completely solving problems such as box misalignment, skewing, crushing damage, and jamming. This significantly improves the packaging yield and production line stability.

[0014] 2. In this invention, a light sensor and corresponding electrical control structure are installed on the frame of the main conveying mechanism. The light sensor emits an infrared beam in real time and captures the occlusion signals of the left and right edges of the packaging box. By changing the light on and off, it accurately collects the lateral offset and tilt data of the box and transmits the position electrical signal to the control unit simultaneously. The control system drives the servo motor to operate according to the offset feedback from the light sensor. Through multi-stage gears and synchronous belt transmission, the buffer plate flexibly pushes the box, dynamically completing real-time alignment and correction. Relying on the high-precision edge detection of the light sensor, non-contact position recognition is achieved, avoiding the box squeezing and damage caused by the hard contact of traditional mechanical limiters. This ensures that the packaging box is in a regular posture and accurately positioned during the conveying process, eliminating stacking misalignment and material blockage failures from the source.

[0015] 3. This invention incorporates a buffer structure on the synchronous belt, specifically designed for the conveying and correction of stacked packaging boxes, providing multiple protection and limiting functions. This prevents bulging, collapse, and deformation caused by prolonged localized pressure on the synchronous belt, maintaining its overall straightness and ensuring stable meshing between the belt and pulleys. It also eliminates problems such as delayed correction actions and misalignment caused by belt deformation. Furthermore, the buffer belt, made of flexible material, provides a close-fitting lateral restraint to the packaging boxes, increasing frictional resistance against the box's sidewalls and limiting its slippage. This works in conjunction with the synchronous belt. The synchronous conveyor reference prevents the boxes from shifting or misaligning during the correction phase. Simultaneously, the buffer belt provides elastic cushioning, absorbing the rigid impact when the synchronous belt contacts the packaging box, preventing direct scraping and squeezing of the box by the hard synchronous belt. This prevents damage to the box's edges, scratches, and wear on the printed layer. While achieving precise correction and alignment of the boxes, it simultaneously protects the synchronous belt drive structure and the boxes to be processed, reducing equipment wear and material defect rates. This ensures stable posture and neat stacking of multi-layer stacked boxes throughout the entire conveying and correction process. The upper end of the synchronous pulley is equipped with a buffer zone to prevent interference with the buffer belt.

[0016] 4. When the calibrated packaging boxes enter the stacking adjustment conveyor mechanism, the outer frame swings upward relative to the second support leg around the sixth pivot, and the inner frame slides outward synchronously. The linkage between the two can dynamically compensate for the gap between the stacking adjustment conveyor mechanism and the end conveyor mechanism, eliminate material conveying gaps, and allow multi-layer stacked packaging boxes to be transferred smoothly and continuously from the second conveyor belt to the end conveyor mechanism without problems such as box jamming, falling, or suspension offset, ensuring that the stacking formation is continuous and complete.

[0017] 5. This invention adopts a four-section modular structure design, with the main conveying, correction, stacking, and unloading processes working in synergy and independently controllable, achieving fully automated unmanned operation. The stacking is highly neat and the stack shape is stable, effectively avoiding the problems of stack collapse and scattered stacks during subsequent warehousing and logistics, and reducing production and logistics losses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall component distribution.

[0019] Figure 2 This is a schematic diagram of the main conveying mechanism.

[0020] Figure 3 This is a schematic diagram of the main conveying mechanism.

[0021] Figure 4 This is a schematic diagram showing the distribution of the drive roller 1, tail roller 1, and idler roller 1.

[0022] Figure 5 This is a schematic diagram of the installation of the idler roller.

[0023] Figure 6This is a schematic diagram of the first sprocket installation.

[0024] Figure 7 This is a schematic diagram of the second sprocket installation.

[0025] Figure 8 This is a schematic diagram of the meshing of the first and second spur gears, and the first and second bevel gears.

[0026] Figure 9 This is a schematic diagram of the installation of the third and fourth rotating shafts.

[0027] Figure 10 This is a schematic diagram of the meshing of the synchronous belt and synchronous pulley in the first type of correction device.

[0028] Figure 11 This is a schematic diagram of the synchronous pulley installation in the first type of correction device.

[0029] Figure 12 This is a schematic diagram of the synchronous pulley structure in the first type of correction device.

[0030] Figure 13 This is a schematic diagram of the synchronous belt installation in the second type of correction device.

[0031] Figure 14 This is a schematic diagram of the coordination between the synchronous belt and the buffer plate in the second type of correction device.

[0032] Figure 15 This is a schematic diagram of the synchronous pulley installation in the second type of correction device.

[0033] Figure 16 This is a schematic diagram of the appearance of the stacking adjustment conveyor mechanism.

[0034] Figure 17 This is a schematic diagram of the appearance of the stacking adjustment conveyor mechanism.

[0035] Figure 18 This is a schematic diagram of the installation of the third spur gear and rack.

[0036] Figure 19 This is a schematic diagram showing the distribution of adjusting roller one and adjusting roller two.

[0037] Figure 20 This is a schematic diagram of the frame two structure.

[0038] Figure 21 This is a schematic diagram of the appearance of the end-of-line conveyor mechanism.

[0039] Figure 22 This is a schematic diagram of the appearance of the end-conveying mechanism.

[0040] Figure 23 This is a schematic diagram of the guide rod cylinder installation.

[0041] Figure 24This is a schematic diagram showing the distribution of magnetic block one and magnetic block two.

[0042] Figure 25 This is a schematic diagram of the installation of magnetic block one and magnetic block two.

[0043] Figure 26 This is a schematic diagram of the side guard assembly structure.

[0044] The labels in the diagram are as follows: 1. Main conveying mechanism; 2. Correction device; 3. Stacking and adjusting conveying mechanism; 4. End conveying mechanism; 1001. Frame 1; 1002. Support Leg 1; 1003. Adjustable Foot; 1004. Vertical Beam; 1005. Horizontal Beam; 1006. Motor Mounting Plate 1; 1007. Gear Motor 1; 1008. Sprocket Drive Assembly 1; 1009. Conveyor Belt 1; 1010. Drive Roller 1; 1011. Tail Roller 1; 1012. Idler Roller 1; 1013. First Drive Shaft; 2001, First chain; 2002, First sprocket; 2003, Second sprocket; 2004, U-shaped fixing rod; 2005, First support; 2006, Second shaft; 2007, Servo motor; 2008, Synchronous belt; 2009, Fixing plate; 2010, Second support; 2011, First spur gear; 2012, Second spur gear; 2013, Third shaft; 2014, Fourth shaft; 2015, First bevel gear; 2016, Second bevel gear; 2017, Mounting sleeve; 2018, Synchronous pulley; 2019, Buffer belt; 2020, Fifth shaft; 2021, Connecting plate; 2022, Clearance area; 2023, Buffer plate; 3001. Frame Two; 3002. Conveyor Belt Two; 3003. Motor Mounting Plate Two; 3004. First Connecting Rod; 3005. Support Leg Two; 3006. Gear Motor Two; 3007. Sprocket Drive Assembly Two; 3008. Support Leg Three; 3009. Buffer Pad; 3010. Gear Motor Three; 3011. Sprocket Drive Assembly Three; 3012. Sixth Rotating Shaft; 3013. Sprocket Drive Assembly Four; 3014. Third Bevel Gear; 3015. Seventh Rotating Shaft; 3016. Fourth Bevel Gear; 3017. Extension 3018. Drive shaft; 3019. Fifth bevel gear; 3020. Eighth rotating shaft; 3021. Rack; 3022. Third spur gear; 3023. Third support; 3024. Sixth bevel gear; 3025. Fourth support; 3026. Fifth support; 3027. Second connecting rod; 3028. Second drive roller; 3029. Ninth rotating shaft; 3030. Adjusting roller one; 3031. Adjusting roller two; 3032. Tail roller two; 3033. Inner frame; 3034. Outer frame; 4001. Support leg four; 4002. Frame three; 4003. Conveyor belt three; 4004. Gear motor four; 4005. Sprocket drive assembly five; 4006. Side baffle assembly; 4007. Rear baffle; 4008. Guide rod cylinder; 4009. Cylinder mounting plate; 4010. Sixth support; 4011. Drive roller three; 4012. Idler roller three; 4013. Magnetic block one; 4014. Magnetic block two; 4015. Side baffle; 4016. Buffer plate. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0046] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] like Figure 1-26 As shown, an automatic correction type intelligent stacking and packaging line, such as Figure 1As shown, it includes a main conveying mechanism 1, a correction device 2, a stacking and adjusting conveying mechanism 3, and an end conveying mechanism 4. The main conveying mechanism 1 is used to complete the uniform feeding and conveying of packaging boxes, providing a continuous material supply for subsequent processes. The correction device 2 is installed at the discharge end of the main conveying mechanism 1 and is used to automatically correct and calibrate packaging boxes that are offset or tilted during the conveying process in real time, ensuring uniform box posture and accurate position. Figure 7 , 13 As shown, it includes a fixed plate 2009, a synchronous pulley 2018, and a synchronous belt 2008. Two parallel fixed plates 2009 are oscillatingly mounted on the upper side of the main conveyor mechanism 1. The synchronous pulley 2018 is rotatably mounted between the two fixed plates 2009. The synchronous belt 2008 is meshed with the outer side of the synchronous pulley 2018. A buffer assembly is provided on the inner side of the synchronous belt 2008. The synchronous belt 2008 is connected to the main conveyor mechanism 1 and rotates synchronously with the uniform movement of the packaging boxes on the main conveyor mechanism 1. The stacking adjustment conveyor mechanism 3 is connected to the discharge end of the main conveyor mechanism 1 and is used for adaptive alignment, layered stacking, and spacing adjustment of the calibrated packaging boxes to adapt to stacking operations of boxes of different specifications. The end conveyor mechanism 4 is connected to the discharge end of the stacking adjustment conveyor mechanism 3 and is used to stably output the stacked, orderly stack, while simultaneously completing end-limiting shaping to prevent the stack from becoming loose.

[0049] In a further embodiment, such as Figure 2 , 3 As shown, the main conveying mechanism 1 includes a frame 1001, support legs 1002, adjustable feet 1003, a conveyor belt 1009, a drive roller 1010, a tail roller 1011, idlers 1012, and a geared motor 1007. The support legs 1002 are fixed to the bottom of the frame 1001, and the adjustable feet 1003 are mounted on the bottom of the support legs 1002, allowing for fine-tuning of the equipment's level to adapt to different installation sites. Vertical beams 1004 and horizontal beams 1005 are fixed to the inner side of the frame 1001 to enhance the overall structural strength of the frame. The drive roller 1010 and the tail roller 1011 are connected by a first drive shaft 10. 13 is rotatably mounted between frames 1001; a geared motor 1007 is fixed to the frame 1001 via a motor mounting plate 1006, ensuring stable installation and convenient disassembly and maintenance; the output end of the geared motor 1007 is connected to the drive roller 1010 via a sprocket transmission assembly 1008, and the drive roller 1010 and the tail roller 1011 are connected by a conveyor belt 1009 for ring transmission. The geared motor 1007 can control the rotation of the drive roller 1010, and the rotation of the drive roller 1010 drives the conveyor belt 1009 to rotate, ensuring uniform feeding and conveying of packaging boxes and providing continuous material supply for subsequent processes; Figure 4 , 5As shown, several idlers 1012 are evenly arranged inside the conveyor belt 1009 to support the conveyor belt 1009, effectively supporting the conveyor belt 1009 and the packaging box above it, preventing the conveyor belt from collapsing and ensuring stable conveying.

[0050] In a further embodiment, such as Figure 7 , 13 As shown, the correction device 2 further includes a servo motor 2007, a U-shaped fixing rod 2004, a first support 2005, a second rotating shaft 2006, a second support 2010, a first spur gear 2011, a second spur gear 2012, a third rotating shaft 2013, a fourth rotating shaft 2014, a first bevel gear 2015, a second bevel gear 2016, a mounting sleeve 2017, and a fifth rotating shaft 2020, wherein... Figure 26 As shown, the U-shaped fixing rod 2004 is fixed to the upper end of the frame 1001, as follows. Figure 8 , 9 As shown, the first support 2005 and the second support 2010 are respectively fixed to both sides of the U-shaped fixing rod 2004; Figure 9 As shown, the mounting sleeve 2017 is fixed to the U-shaped fixing rod 2004, and the tubular third rotating shaft 2013 is rotatably assembled onto the mounting sleeve 2017, as shown. Figure 10 , 11 As shown, two parallel fixed plates 2009 are fixedly connected by multiple connecting plates 2021, and the lower end of the third rotating shaft 2013 is fixedly connected to the two fixed plates 2009; Figure 8 , 9As shown, the second spur gear 2012 is fixedly mounted on the third rotating shaft 2013, and the servo motor 2007 is fixedly mounted on the upper side of the second support 2010. The output end of the servo motor 2007 is fixedly mounted with the first spur gear 2011, and the first spur gear 2011 and the second spur gear 2012 mesh with each other. The servo motor 2007 can control the rotation of the first spur gear 2011, which drives the second spur gear 2012 to rotate. The rotation of the second spur gear 2012 drives the third rotating shaft 2013 to rotate. Through multi-stage gear meshing, stable power transmission is achieved, ensuring synchronous and accurate correction actions. The rotation of the third rotating shaft 2013 drives the two fixed plates 2009 to swing, and the swing of the two fixed plates 2009 drives the synchronous pulley 2018 and the synchronous belt 2008 mounted on them to swing. The frame of the main conveying mechanism 1 in this invention is... A light sensor and corresponding electrical control structure are installed on unit 1001. The light sensor and its supporting structure are existing technology and are not explicitly shown in the attached diagram. The light sensor emits an infrared beam in real time and captures the occlusion signals of the left and right edges of the packaging box. It accurately collects the lateral offset and angular tilt data of the box by changing the light's on / off state, and simultaneously transmits the position electrical signal to the control unit. The control system drives the servo motor 2007 based on the offset feedback from the light sensor. Through multi-stage gears and a synchronous belt 2008, the system drives the buffer plate 2023 to flexibly push the box, dynamically completing real-time alignment and correction. High-precision edge detection using the light sensor achieves contactless position recognition, avoiding the box crushing and damage caused by traditional mechanical limiters, ensuring the packaging box maintains a regular posture and accurate positioning during transport, and preventing stacking misalignment and material blockage from the source. Figure 10 , 11 As shown, the synchronous pulley 2018 is rotatably mounted between two fixed plates 2009 via the fifth rotating shaft 2020, as... Figure 9 As shown, the fourth rotating shaft 2014 is rotatably mounted inside the third rotating shaft 2013, and the lower end of the fourth rotating shaft 2014 is fixedly connected to a fifth rotating shaft 2020 near the servo motor 2007; as Figure 8 , 9 As shown, a first bevel gear 2015 is fixedly mounted on the upper end of the fourth rotating shaft 2014, and a second rotating shaft 2006 is rotatably mounted on the first support 2005. A second bevel gear 2016 is fixedly mounted on one end of the second rotating shaft 2006, and the first bevel gear 2015 and the second bevel gear 2016 mesh with each other; stable power transmission is achieved through multi-stage gear meshing, ensuring synchronous and precise correction actions; a second sprocket 2003 is fixedly mounted on the other end of the second rotating shaft 2006; as... Figure 1 , 3As shown, a first sprocket 2002 is fixedly mounted on the first drive shaft 1013 of the mounting drive roller 1010. The first sprocket 2002 and the second sprocket 2003 are connected by a first chain 2001. When the first drive shaft 1013 is driven to rotate, the first drive shaft 1013 drives the first sprocket 2002 to rotate. The rotation of the first sprocket 2002 drives the second sprocket 2003 connected to it via the first chain 2001 to rotate. The rotation of the second sprocket 2003 drives the second rotating shaft 2006 to rotate. The rotation of the second rotating shaft 2006 drives the second bevel gear 2016 to rotate. The rotation of the second bevel gear 2016 drives the first bevel gear... The rotation of the first bevel gear 2015 drives the rotation of the fourth shaft 2014, which in turn drives the corresponding fifth shaft 2020. The fifth shaft 2020 then drives the corresponding synchronous pulley 2018, which in turn drives the synchronous belt 2008. Through the transmission of the drive roller 1010, tail roller 1011, first sprocket 2002, first chain 2001, second sprocket 2003, fourth shaft 2014, first bevel gear 2015, second bevel gear 2016, fifth shaft 2020, and synchronous pulley 2018, the transmission belt 1009 and synchronous belt 2008 can... It maintains the same rotational speed; ensures that the conveyor belt 1009 and the synchronous belt 2008 of the correction device 2 maintain synchronized speed and consistent direction of travel, with no relative slippage or speed difference between them; the bottom of the packaging box is uniformly supported by the conveyor belt 1009, and the sides are flexibly fitted and limited by the synchronous belt 2008, which can completely eliminate the problems of friction, pulling, slippage, and deflection between the bottom and sides of the box; the box's front-to-back and left-to-right posture is stable throughout the conveying process, and there will be no twisting, tilting, or misalignment due to the speed difference of the belt, which greatly reduces the position error detected by the light sensor and ensures accurate and reliable correction data; the synchronous following mode adopts flexible clamping positioning, without hard impact or squeezing, effectively avoiding packaging The edges and corners of the boxes are scratched, folded, deformed, or damaged. Simultaneously, the unified conveying rhythm matches the feeding sequence of the rear stacking and adjusting conveyor mechanism 3, ensuring each box enters the stacking station accurately and orderly, reducing material jamming and blockage, and improving the continuous operation stability and finished product uniformity of the entire stacking packaging line. Multiple synchronous pulleys 2018 are evenly installed between the two fixed plates 2009, and a buffer belt 2019 is fixedly installed on the inner side of the upper end of the synchronous belt 2008 to prevent deformation of the upper area of ​​the synchronous belt 2008. This invention uses a buffer belt 2019 fixedly installed on the inner side of the upper end of the synchronous belt 2008 to achieve multiple protection and limiting functions specifically for the stacking packaging box correction and conveying conditions.When conveying multi-layer stacked packaging boxes, the upper boxes only bear their own weight, resulting in insufficient vertical clamping force and low friction with the lower boxes. This makes them prone to lateral slippage and shifting during conveying and alignment, exacerbating box tilting and deviation. The alignment station relies on the synchronous belt 2008 for posture correction, but the upper part of the synchronous belt 2008 frequently comes into contact with the side wall of the upper packaging box. Prolonged single-point stress can cause the synchronous belt 2008 to dent and deform locally, reducing its transmission accuracy and lifespan. The buffer belt 2019 is integrally designed with the inner upper surface of the synchronous belt 2008, forming a flexible support contact surface. When the synchronous belt 2008 applies lateral alignment pressure to the box, the buffer belt 2019 disperses the concentrated pressure transmitted from the upper packaging box, preventing bulging, collapse, and deformation of the synchronous belt 2008 due to prolonged localized pressure. This maintains the overall straightness of the synchronous belt 2008 and ensures its smooth operation. The 2018 step wheel provides stable meshing transmission, eliminating problems such as delayed correction and misalignment caused by belt deformation. On the other hand, the 2019 buffer belt, made of flexible material, provides a close-fitting lateral restraint for easily sliding upper-layer packaging boxes, increasing frictional resistance with the box sidewalls and constraining the lateral slippage of the upper boxes. Combined with the synchronous conveying reference of the 2008 synchronous belt, it prevents the upper boxes from shifting or misaligning during the correction phase. Simultaneously, the 2019 buffer belt has elastic cushioning properties, absorbing the rigid impact when the synchronous belt 2008 contacts the packaging boxes, preventing the hard synchronous belt 2008 from directly scraping or squeezing the boxes, and preventing damage to the box edges, surface scratches, and wear on the printed layer. While achieving precise correction and alignment of the boxes, it simultaneously protects the synchronous belt 2008 transmission structure and the packaging boxes to be processed, reducing equipment wear and material defect rates, and ensuring stable posture and neat stacking throughout the entire process of conveying and correcting multi-layer stacked packaging boxes. Figure 12 As shown, the upper end of the synchronous pulley 2018 is provided with a buffer zone 2022 to prevent interference with the buffer zone 2019.

[0051] In a further embodiment, such as Figure 14 , 15As shown, two synchronous pulleys 2018 are installed at both ends of the two fixed plates 2009, and a buffer plate 2023 is fixedly installed between the two fixed plates 2009 and between the two synchronous pulleys 2018. This design of the buffer plate 2023 has the following beneficial effects: First, the buffer plate 2023 is completely arranged along the synchronous belt 2008, which can bear the lateral pressure of the entire stack of packaging boxes, disperse the concentrated load, prevent the upper, middle and lower sections of the synchronous belt 2008 from being directly subjected to pressure and friction, causing dents, bulges and cracks, keep the synchronous belt 2008 straight for a long time, ensure the precise meshing of the synchronous pulleys 2018, avoid deviation and jamming, extend the service life of the synchronous belt 2008, and reduce equipment maintenance. Secondly, full-height limiting prevents slippage and misalignment of stacked boxes. Addressing the issue of low pressure and easy lateral slippage in upper-layer boxes of multi-layered stacks, the buffer plate 2023 adheres to all side walls of the stack, simultaneously forming uniform lateral clamping on the bottom, middle, and top layers of packaging boxes. This increases the friction contact surface, restraining the lateral movement of each layer of boxes, and solves the defect of single-segment buffering which only restricts the upper, middle, and lower layers, ensuring the entire stack is aligned vertically and without delamination. Thirdly, full-area flexible buffering reduces packaging box appearance defects. The elastic material of the buffer plate 2023 achieves full-height flexible contact, eliminating rigid compression and scraping between the synchronous belt 2008 and the box body. It simultaneously protects the bottom, middle, and top layers of boxes, preventing corner folds, dents, surface scratches, and printing wear, comprehensively reducing material loss and meeting the appearance quality requirements of high-end packaging. Fourth, uniform force distribution improves overall alignment accuracy. Unlike single-segment buffers where force is concentrated and the stack is prone to tilting, the 2023 buffer plate uniformly outputs correction thrust vertically, ensuring balanced force across the entire stack. There is no warping or deflection during alignment. The edge position data collected by the light sensor is more accurate, and the 2007 servo motor can complete high-precision alignment and correction in one pass, improving production line conveyor cycle time. Fifth, the integrated structure is easy to install and can be completely disassembled and replaced after wear. It eliminates the problems of segmented buffer strips (2019) falling off or height misalignment, resulting in stronger operational stability and suitability for high-speed continuous mass production. Sixth, greater versatility adapts to multiple stack types, covering a full height range. It is compatible with single-layer packaging boxes, low stacks, and high-rise thick stacks of different heights. Switching between specifications requires no replacement of buffer components, shortening changeover and debugging time for multi-category production and meeting flexible production needs.

[0052] In a further embodiment, such as Figure 16 , 17As shown, the stacking adjustment conveyor mechanism 3 includes a frame 3001, a conveyor belt 3002, a motor mounting plate 3003, a first connecting rod 3004, a support leg 3005, a geared motor 3006, a sprocket drive assembly 3007, a support leg 3008, a geared motor 3010, a sprocket drive assembly 3011, a sixth rotating shaft 3012, a sprocket drive assembly 3013, a third bevel gear 3014, and a seventh rotating shaft. 3015, Fourth Bevel Gear; 3016, Telescopic Drive Shaft; 3017, Fifth Bevel Gear; 3018, Eighth Rotating Shaft; 3019, Rack; 3020, Third Spur Gear; 3021, Third Support; 3022, Sixth Bevel Gear; 3023, Fourth Support; 3024, Fifth Support; 3025, Drive Roller II; 3028, Ninth Rotating Shaft; 3029, Adjusting Roller I; 3030, Adjusting Roller II; 3031, Tail Roller II; 3032, etc. Figure 20 As shown, the second frame 3001 consists of an outer frame 3034 and an inner frame 3033, with the inner frame 3033 capable of sliding relative to the outer frame 3034. In this invention, the second frame 3001 adopts a split structure of a relatively sliding inner frame 3033 and an outer frame 3034. The outer frame 3034 can swing upwards relative to the second support leg 3005 around the sixth pivot 3012, while the inner frame 3033 simultaneously slides outwards. This linkage dynamically compensates for the gap between the stacking adjustment conveyor 3 and the end conveyor 4, eliminating material conveying interruptions. Multi-layer stacked packaging boxes can be smoothly and continuously transferred from the second conveyor belt 3002 to the end conveyor 4 without jamming, falling, or suspended offset, ensuring continuous and complete stacking. Figure 16 , 18 As shown, one end of the outer frame 3034 is oscillatingly mounted between two support legs 3005 via two sixth rotating shafts 3012. The drive roller 3028 is rotatably mounted on the outer frame 3034 via the ninth rotating shaft 3029, and the tail roller 3032 is rotatably mounted on the inner frame 3033. Figure 18 , 19As shown, the first adjusting roller 3030 is rotatably mounted on the lower side of the inner frame 3033 via two symmetrically distributed fourth supports 3024 and is located between the second driving roller 3028 and the second tail roller 3032; the second adjusting roller 3031 is rotatably mounted on the lower side of the outer frame 3034 via two symmetrically distributed fifth supports 3025 and is located below the first adjusting roller 3030 and biased towards the second tail roller 3032; the second driving roller 3028 and the second tail roller 3032 are connected by a transmission belt 3002, and the first adjusting roller 3030 and the second adjusting roller 3031 are adjustablely mounted inside the second transmission belt 3002; in this invention, the inner frame 3033 can slide relative to the outer frame 3034 to change the overall conveying length, and the outer frame 3034 can swing to adjust the discharge height. Both length and height are adjustable, allowing for stacking operations of single-layer, multi-layer, and different-sized packaging boxes without changing the overall tooling. The design requires only minor adjustments to the extension stroke and swing angle, significantly shortening production line debugging time, improving equipment versatility, and meeting the needs of flexible packaging production in multiple specifications and small batches. The geared motor 3010 is fixed to the outer frame 3034 via the motor mounting plate 3003. The output end of the geared motor 3010 is connected to the drive roller 3028 via the sprocket transmission assembly 3011. The geared motor 3010 is separately fixed to the outer frame 3034 and drives the drive roller 3028 via the sprocket transmission assembly 3011. The power output is independently controllable, and the conveying speed can be adjusted independently, which can accurately match the discharge rhythm of the front-end correction device 2. The drive roller 3028 and the tail roller 3032 are respectively placed on the inner and outer frames 3034. The conveyor belt 3002 maintains a stable closed-loop transmission throughout the entire process. There will be no belt loosening or slippage during the extension and swing process. The conveying speed is uniform and without step loss, ensuring that the stacking spacing of each group of packaging boxes is uniform. In this invention, the adjusting roller 3030 is mounted on the lower side of the inner frame 3033 with the help of two sets of symmetrical fourth supports 3024. It is located in the middle area between the active roller 3028 and the tail roller 3032, and can slide back and forth synchronously with the inner frame 3033 relative to the outer frame 3034. When the inner frame 3033 extends outward and the overall conveying length increases, the tail roller 3032 moves outward synchronously with the inner frame 3033, while the drive roller 3028 remains fixed in the position of the outer frame 3034. The increased distance between the two will cause the conveyor belt 3002 to have slack. The adjusting roller 3030 slides outward synchronously with the inner frame 3033 and moves synchronously towards the tail roller 3032, pressing down on the inner side of the conveyor belt 3002. It actively compensates for the increased total length of the belt between the drive roller 3028 and the tail roller 3032 by its own movement stroke, absorbing the excess of the conveyor belt and preventing the conveyor belt from becoming loose, sagging, or slipping due to the stretching of the frame.When the inner frame 3033 retracts inward and the conveying length shortens, the adjusting roller 1 3030 retracts synchronously, releasing the belt's accommodating space and preventing the conveyor belt from being overstretched and cracking due to long-term stress fatigue. This ensures the belt length always matches the changes in belt length caused by the expansion and contraction of the inner and outer frames 3034. The adjusting roller 2 3031 is fixedly installed on the lower side of the outer frame 3034 via two sets of symmetrical fifth supports 3025, maintaining a stationary position. It is positioned diagonally below the adjusting roller 1 3030 and near the tail roller 2 3032, forming a fixed low-position support reference. During frame expansion and contraction, the outer frame... Throughout the entire swing of 3034, the position of the second adjusting roller 3031 remains unchanged, continuously providing constant support from the lower inner side of the second conveyor belt 3002. This forms an upper and lower staggered support structure with the movable first adjusting roller 3030. At the same time, the stationary second adjusting roller 3031 can limit the excessive downward collapse of the second conveyor belt 3002, preventing the bottom of the thin packaging box from being suspended and causing displacement due to conveying bumps, thus ensuring that the stack is conveyed smoothly and without tilting. The dynamic sliding compensation length of the first adjusting roller 3030 and the static positioning support of the second adjusting roller 3031 form a combined support structure of movement and stillness. Regardless of whether the inner frame 3033 extends or retracts to change the total conveying length, or the outer frame 3034 swings around the sixth rotating shaft 3012 to adjust the discharge angle, the two sets of rollers always work together to constrain the path of the second conveyor belt 3002: the first adjusting roller 3030 dynamically offsets the tension fluctuations caused by changes in belt length, and the second adjusting roller 3031 locks the bottom support reference, ensuring that the second conveyor belt 3002 maintains a uniform and moderate tension throughout the entire process. This prevents belt misalignment and box slippage due to excessive looseness, and also prevents increased frictional wear between the belt and the rollers due to excessive tightness, thus extending the service life of the conveyor belt and reducing the frequency of equipment maintenance. The first adjusting roller 3030 dynamically slides to compensate for the length, and the second adjusting roller 3031 provides static positioning support, forming a combined dynamic and static support structure. Regardless of whether the inner frame 3033 extends or retracts to change the total conveying length, or the outer frame 3034 swings around the sixth rotating shaft 3012 to adjust the discharge angle, the two sets of rollers always work together to constrain the path of the second conveyor belt 3002: the first adjusting roller 3030 dynamically offsets the tension fluctuations caused by changes in belt length, and the second adjusting roller 3031 locks the bottom support reference, so that the second conveyor belt 3002 maintains a uniform and moderate tension throughout the entire process. This prevents the belt from running off-center or the box from slipping due to excessive looseness, and also prevents excessive tightness from increasing frictional wear between the belt and the rollers, thus extending the service life of the conveyor belt and reducing the frequency of equipment maintenance; the seventh rotating shaft 3015 is rotatably installed on one side of the outer frame 3034, and the eighth rotating shaft 3019 is rotatably installed on one side of the inner frame 3033;The two ends of the telescopic drive shaft 3017 are rotatably mounted on one side of the outer frame 3034 and the inner frame 3033 respectively via two third supports 3022. The seventh rotating shaft 3015 and the sixth rotating shaft 3012 located on the same side are connected by a sprocket drive assembly four 3013. The sprocket mounted on the sixth rotating shaft 3012 in the sprocket drive assembly four 3013 is fixedly connected to the second support leg 3005 on the corresponding side. The sixth rotating shaft 3012 passes through the circular hole in the middle of the sprocket. The third bevel gear 3014 is fixedly mounted on the seventh rotating shaft 3015, the fourth bevel gear 3016 is fixedly mounted on one end of the telescopic drive shaft 3017, and the sixth bevel gear 3023 is fixedly mounted on the other end of the telescopic drive shaft 3017. The fifth bevel gear... Gear 3018 is fixedly installed at one end of the eighth rotating shaft 3019, and third spur gear 3021 is fixedly installed at the other end of the eighth rotating shaft 3019; rack 3020 is fixed to the outer frame 3034, and third spur gear 3021 meshes with rack 3020; two support legs 3008 are fixedly installed on the lower side of the two fifth supports 3025; a second geared motor 3006 is installed on the lower side of the frame, and the second geared motor 3006 and the sixth rotating shaft 3012 are connected by a sprocket transmission assembly 3007; in this invention, the second geared motor 3006 outputs torque, which is transmitted through the sprocket transmission assembly 3007 to drive the sixth rotating shaft 3012 to rotate; the support legs 3008 are fixedly installed on the sixth rotating shaft 3012. The sprocket is fixed to the second support leg 3005 and is only idling on the surface of the sixth rotating shaft 3012, without restricting the rotation of the sixth rotating shaft 3012 itself. The rotation of the sixth rotating shaft 3012 directly drives the outer frame 3034, which is assembled with it, to swing and lift synchronously around the sixth rotating shaft 3012, realizing the adjustment of the discharge tilt angle. When the sixth rotating shaft 3012 rotates, the rotational power is transmitted to the seventh rotating shaft 3015 on the same side through the sprocket transmission assembly 3013, so that the seventh rotating shaft 3015 rotates synchronously with the sixth rotating shaft 3012. The end of the seventh rotating shaft 3015 is fixed with a third bevel gear 3014, which meshes with a fourth bevel gear 3016 at one end of the telescopic transmission shaft 3017 to drive the horizontal rotation of the seventh rotating shaft 3015. Power is reversed and transmitted to the telescopic drive shaft 3017, driving the entire telescopic drive shaft 3017 to rotate. The telescopic drive shaft 3017 has a telescopic structure, which can adapt to the changes in wheelbase caused by the sliding of the inner frame 3033 relative to the outer frame 3034, maintaining continuous power transmission throughout the process. The other end of the telescopic drive shaft 3017 is fixed with a sixth bevel gear 3023, which meshes with the fifth bevel gear 3018 at the end of the eighth rotating shaft 3019, completing the power reversal again and driving the eighth rotating shaft 3019 installed on the side of the inner frame 3033 to rotate synchronously. The other end of the eighth rotating shaft 3019 is fixed with a third spur gear 3021, which meshes with a rack 3020 fixed on the outer frame 3034.The rotation of the eighth rotating shaft 3019 drives the third spur gear 3021 to rotate circumferentially. The gear and rack pair 3020 converts the rotational motion into linear displacement, pulling or pushing the inner frame 3033 along the internal slide rail of the outer frame 3034, allowing it to slide back and forth relative to the outer frame 3034, extending or retracting. This synchronously compensates for the conveying gap between the stacking station and the end conveying mechanism 4 when the outer frame 3034 swings to discharge material.

[0053] In a further embodiment, such as Figure 16 , 20 As shown, the motor mounting plate 3003 is fixedly mounted on the lower side of the outer frame 3034 via four first connecting rods 3004; as Figure 19 As shown, a second connecting rod 3027 is fixedly connected to the middle of the frame 3001; several idlers 3026 are evenly arranged on the inner side of the conveyor belt 3002; the middle section of the conveyor belt 3002 has a large span, and the weight of the multi-layered stacked packaging boxes will press down on the belt. Without the support of the idlers 3026, the middle section is prone to sinking, loosening and sagging; the evenly distributed idlers 3026 form continuous support points from the inner side of the conveyor belt, dispersing the vertical pressure of the boxes, maintaining the straight conveying surface of the conveyor belt, and preventing thin packaging boxes from getting stuck or tilting due to belt indentation, thus ensuring the stability of the center of gravity of the high-stacked packaging boxes during transport. A buffer pad 3009 is fixedly installed at the lower end of the support leg 3008; the continuous vibration generated by the operation of the equipment can easily cause relative sliding between the support leg 3008 and the ground. The anti-slip structure at the bottom of the buffer pad 3009 can increase the coefficient of friction with the ground and firmly limit the frame 3001.

[0054] In a further embodiment, such as Figure 21 , 22As shown, the end conveying mechanism 4 includes a frame 4002, a conveyor belt 4003, a geared motor 4004, a side baffle assembly 4006, a sprocket drive assembly 4005, a rear baffle 4007, a guide rod cylinder 4008, a cylinder mounting plate 4009, a sixth support 4010, a roller 3, and an idler roller 4012. The frame 4002 has a support leg 4001 fixed to its bottom. The roller 3 is divided into a drive roller 4011 and a tail roller 3, which are rotatably mounted between the frame 4002. The geared motor 4004 is fixed to one side of the frame 4002 and connected via the sprocket drive assembly 4005. The drive roller 3 4011 is connected to the tail roller 3 via a ring drive of the conveyor belt 3 4003. Several idler rollers 3 4012 are evenly arranged inside the conveyor belt 3 4003. Multiple sets of side baffle assemblies 4006 are evenly and fixedly installed on the conveyor belt 3. These side baffle assemblies 4006 are evenly distributed on the surface of the conveyor belt 3 4003, synchronously limiting and constraining both sides of the stacked packaging boxes along the entire conveying process. This prevents the stack from spreading out or slipping due to inertia and vibration during transport, maintaining a neat and compact stack shape throughout the process. This solves the defects of easy collapse and skewed stacking during multi-layer box conveying, ensuring standardized stack shape and facilitating subsequent warehousing and palletizing operations. Figure 22 , 23As shown, the cylinder mounting plate 4009 is fixedly installed on one side of the frame 4002 via the sixth support 4010. The guide rod cylinder 4008 is fixedly installed on the cylinder mounting plate 4009. The output end of the guide rod cylinder 4008 is fixedly installed with a rear baffle 4007, which is used to limit and straighten the stacked boxes and push them out. When the stacked boxes are transported to the end, the rear baffle 4007 extends and abuts against the end of the stack to limit and straighten the stack, thus completing the front and rear alignment and shaping, eliminating the front and rear misalignment caused by the stacking difference. After the shaping is completed, the cylinder retracts and pushes the stack out. The whole process does not require manual sorting or handling, realizing unmanned continuous material discharge operation, reducing the cost of manual intervention, and improving the automation level of the entire packaging line. In this invention, the end conveying mechanism 4 is equipped with an independent geared motor 4004, which drives the active roller 4011 independently through the sprocket transmission assembly 4005. The conveying speed of the conveyor belt 4003 can be independently adjusted, precisely matching the discharge rate of the front-end stacking and adjusting conveying mechanism 3, ensuring orderly connection and transfer of stacked packaging boxes without material accumulation or waiting. The active roller 4011 and the tail roller 3 form a closed-loop annular transmission, ensuring the conveyor belt 4003 runs smoothly and at a uniform speed, guaranteeing a smooth and stable transport of the stacked boxes without bumps or slippage. Multiple sets of idler rollers 4012 are evenly arranged on the inner side of the conveyor belt 4003, providing continuous rolling support for the conveyor belt carrying multiple stacks of boxes, distributing the overall weight of the stack, and preventing the middle section of the conveyor belt from collapsing or deforming under pressure. Simultaneously, the sliding friction between the conveyor belt and the frame is converted into rolling friction of the idler rollers, reducing conveyor belt wear, lowering the motor load, extending the conveyor belt's service life, and ensuring a stable center of gravity during the transport of heavy stacks, preventing unilateral tilting or shifting. In this invention, after the initial positioning is completed in the front-end correction and stacking process, the end conveying mechanism 4 relies on the lateral constraint of the side baffle assembly 4006 and the end regularization of the rear baffle 4007 to perform secondary shaping and calibration of the stacked packaging boxes, unify the size and neatness of all finished product stacks, avoid the differences in the appearance of finished products caused by the accumulation of small deviations in the front-end conveying, and meet the unified warehousing and logistics packaging standards of the food, pharmaceutical and daily chemical industries.

[0055] In a further embodiment, such as Figure 26As shown, the side baffle assembly 4006 includes a side baffle 4015 and a buffer plate 4016. The two side baffles 4015 are symmetrically and adjustablely mounted on the conveyor belt 3. The side baffles 4015 have an inclined guide plate near the stacking adjustment conveyor mechanism 3. The buffer plate 4016 is mounted on the opposite wall surface of the two side baffles 4015. A slanted guide plate is provided at one end of the side baffle 4015 facing the stacking adjustment conveyor mechanism 3, forming a flared inlet that is wider at the outside and narrower at the inside. When the multi-layer stacked packaging boxes sent from the stacking station enter the conveyor belt 3 4003, the slanted guide plate can automatically guide and gather the stacks with slight left and right deviations. It can smoothly guide the boxes between the two sets of side baffles 4015 without precise alignment, avoiding direct impact of the stack corners on the side baffles 4015, which could cause box damage, material jamming, and line blockage, and ensure smooth material connection between the preceding and following processes. In this invention, the two side baffles 4015 adopt a symmetrical adjustable installation structure, and the distance between the two side baffles 4015 can be adjusted synchronously according to the width of the packaging box and the overall size of the stack. When switching to different sizes of products, only a slight adjustment of the installation position of the side baffles 4015 is needed for adaptation, without the need to replace the entire set of side baffle accessories, which greatly shortens the production line changeover and debugging time and is compatible with single-layer small boxes. This invention offers various packaging specifications, including multi-layer wide stacks, enhancing equipment versatility. The inner walls of the opposing side baffles 4015 are equipped with buffer sheets 4016. During the conveyor belt 4003's transport and cylinder-driven alignment of the stacks, the side walls of the stacks flexibly contact the buffer sheets 4016, replacing the hard scraping and squeezing of metal baffles. This prevents scratches on the packaging surface, dents and dents in the corners, and also buffers lateral impacts during stack movement, reducing material scrap rates and meeting the stringent packaging appearance requirements of pharmaceuticals, high-end daily chemicals, and other production scenarios. The side baffles 4015 and buffer sheets 4016 are independently assembled. After long-term friction and wear, only the worn buffer sheets 4016 need to be replaced individually, without the need to disassemble the entire side baffles 4015. This simplifies disassembly and assembly, reduces equipment consumable replacement costs and downtime maintenance, and is suitable for long-term continuous operation of production lines.

[0056] In a further embodiment, such as Figure 24 , 25As shown, each side baffle 4015 is fixedly installed with two magnetic blocks 4014, and a magnetic block 4013 is installed on the inner side of the conveyor belt 3. The side baffle 4015 is installed on the conveyor belt 3 through the cooperation of the corresponding magnetic blocks 4013 and magnetic blocks 4014. In this invention, the side baffle 4015 is fixed by magnetic attraction between magnetic block 2 4014 and magnetic block 1 4013 inside the conveyor belt 3 4003, eliminating the need for traditional bolt locking and sliding groove buckle fixing structures, and requiring no tools such as wrenches or screws. When adjusting the width between the two side baffles 4015 to accommodate packaging boxes of different stack widths, the side baffles 4015 can be directly dragged along the surface of the conveyor belt. The magnetic attraction force can fix the side baffles 4015 in any position in real time, achieving stepless fine adjustment of the spacing. This significantly reduces the time required for product changeover and debugging, and is suitable for multi-specification, small-batch flexible stacked box production. When the stacked stack is guided between the two side baffles 4015 by the inclined guide plate, the side wall of the box will generate an instantaneous lateral impact force on the side baffles 4015. The magnetic connection between magnetic block 1 4013 and magnetic block 2 4014 has a small buffer gap, which can absorb the impact load and prevent the impact force from being directly transmitted to the conveyor belt, causing belt pulling and deviation. At the same time, it relies on stability Magnetic attraction counteracts lateral thrust, ensuring that the side baffles 4015 do not slip or shift during the entire conveying process, maintaining a consistent and precise positioning. For routine cleaning of the conveyor belt 4003, replacement of worn buffer pads 4016, and maintenance of jammed materials, simply pull the side baffles 4015 outwards to overcome the magnetic attraction for quick removal, eliminating the need to disassemble numerous fasteners. After cleaning, the side baffles 4015 are directly attached to the conveyor belt, with magnetic blocks 4013 and 4014 automatically engaging and positioning themselves. This simple and quick assembly / disassembly process reduces production line downtime and increases effective production time. With magnetic blocks 4013 and 4014 adsorbing one-to-one, the side baffles 4015 quickly return to their preset positioning after each assembly / disassembly, preventing issues like loosening or large gaps caused by long-term wear of sliding grooves or snap-fit ​​structures. During mass production, the clamping distance between the two side baffles 4015 remains constant, ensuring uniform positioning dimensions for all stacked stacks and guaranteeing neat and standardized finished product stacks.

[0057] When the packaging box is conveyed to the discharge end and enters the working area of ​​the correction device 2, the servo motor 2007 starts. Through the multi-stage meshing transmission of the first spur gear 2011 and the second spur gear 2012, it drives the fourth rotating shaft 2014 and the corresponding synchronous wheel 2018 to rotate. The rotation of the synchronous wheel 2018 drives the synchronous belt 2008 to run synchronously with the transmission belt 1009. The buffer plates 2023 or buffer belts 2019 on both sides perform flexible and dynamic calibration on the offset and tilted packaging boxes, correcting the lateral offset and angular deviation of the box body in real time, completely eliminating the rigid extrusion and breakage problem of traditional mechanical limit, and ensuring that the discharge posture of each packaging box is uniform and the position is accurate.

[0058] When the calibrated packaging box enters the stacking adjustment conveyor mechanism 3, the outer frame 3034 swings upward relative to the second support leg 3005 around the sixth rotating shaft 3012, and the inner frame 3033 slides outward synchronously. The linkage between the two can dynamically compensate for the gap between the stacking adjustment conveyor mechanism 3 and the end conveyor mechanism 4, eliminate material conveying gaps, and allow multi-layer stacked packaging boxes to be smoothly and continuously transferred from the second conveyor belt 3002 to the end conveyor mechanism 4 without problems such as box jamming, falling, or suspension offset, ensuring that the stacking formation is continuous and complete.

[0059] Finally, the stacked boxes enter the end conveyor mechanism 4. The side baffles 4006 on both sides perform secondary positioning and straightening of the stack to prevent deviation during the conveying process. The guide rod cylinder 4008 drives the rear baffle 4007 to complete the end shaping and automatic discharge, ensuring continuous and stable operation of the equipment and uniform and regular discharge stack, which meets the standardized stacking requirements of warehousing and logistics.

[0060] The invention adopts a modular integrated design, with each mechanism driven independently and matched collaboratively. It has a high degree of automation, high correction accuracy, good stacking effect, and strong flexibility and adaptability. It can be widely adapted to the stacking and packaging operations of various sizes of packaging boxes in multiple industries such as food, daily chemicals, and pharmaceuticals, effectively reducing labor costs and improving production efficiency and product yield.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An automatic correction type intelligent stacking and packaging line, characterized in that: It includes a main conveying mechanism, a correction device, a stacking and adjusting conveying mechanism, and an end conveying mechanism; The main conveying mechanism is used to complete the uniform feeding and conveying of packaging boxes; The correction device is mounted on the discharge end of the main conveyor mechanism and is used to automatically correct and calibrate packaging boxes that are offset or tilted during the conveying process in real time. It includes a fixed plate, a synchronous pulley, and a synchronous belt. The upper and lower parallel fixed plates are oscillatingly mounted on the upper side of the main conveyor mechanism, and the synchronous pulley is rotatably mounted between the two fixed plates. The synchronous belt is engaged with the outer side of the synchronous pulley. A buffer assembly is provided on the inner side of the synchronous belt. The synchronous belt is drivenly connected to the main conveyor mechanism and rotates synchronously with the uniform movement of the packaging boxes on the main conveyor mechanism. The stacking adjustment conveyor mechanism is connected to the discharge end of the main conveyor mechanism and is used to adaptively align, neatly stack, and adjust the specifications of the calibrated packaging boxes. The end conveying mechanism is connected to the discharge end of the stacking and adjusting conveying mechanism to stably output the stacked box stacks.

2. The automatic correction type intelligent stacking and packaging line according to claim 1, characterized in that: The main conveying mechanism includes a frame, support legs, adjustable feet, a conveyor belt, a drive roller, a tail roller, idlers, and a geared motor. The support legs are fixed to the bottom of the frame, and the adjustable feet are mounted on the bottom of the support legs. A vertical beam and a horizontal beam are fixed to the inner side of the frame. The drive roller and the tail roller are rotatably mounted between the frame via a first transmission shaft. The geared motor is fixed to the frame via a motor mounting plate. The output end of the geared motor is connected to the drive roller via a sprocket transmission assembly. The drive roller and the tail roller are connected by a ring transmission via the conveyor belt. Several idlers are evenly arranged inside the conveyor belt to support it. A light sensor and corresponding electrical control components are installed on the frame of the main conveying mechanism.

3. The automatic correction type intelligent stacking and packaging line according to claim 1, characterized in that: The correction device further includes a servo motor, a U-shaped fixing rod, a first support, a second rotating shaft, a second support, a first spur gear, a second spur gear, a third rotating shaft, a fourth rotating shaft, a first bevel gear, a second bevel gear, a mounting sleeve, and a fifth rotating shaft. The U-shaped fixing rod is fixed to one upper end of the frame, and the first and second supports are respectively fixed to both sides of the U-shaped fixing rod. The mounting sleeve is fixed to the U-shaped fixing rod, and the tubular third rotating shaft is rotatably mounted on the mounting sleeve. Two parallel fixing plates are fixedly connected by multiple connecting plates, and the lower end of the third rotating shaft is fixedly connected to the two fixing plates. The second spur gear is fixedly mounted on the third... On the rotating shaft, a servo motor is fixedly mounted on the upper side of the second support. A first spur gear is fixedly mounted on the output end of the servo motor, and the first spur gear and the second spur gear mesh with each other. A synchronous pulley is rotatably mounted between two fixed plates via a fifth rotating shaft. A fourth rotating shaft is rotatably mounted inside the third rotating shaft, and the lower end of the fourth rotating shaft is fixedly connected to a fifth rotating shaft near the servo motor. A first bevel gear is fixedly mounted on the upper end of the fourth rotating shaft. A second rotating shaft is rotatably mounted on the first support, and a second bevel gear is fixedly mounted on one end of the second rotating shaft. The first bevel gear and the second bevel gear mesh with each other. A second sprocket is fixedly mounted on the other end of the second rotating shaft. A first sprocket is fixedly mounted on the first drive shaft on which the first drive roller is installed. The first sprocket and the second sprocket are connected by a first chain. The drive roller, the tail roller, the first sprocket, the first chain, the second sprocket, the fourth shaft, the first bevel gear, the second bevel gear, the fifth shaft, the synchronous pulley, the transmission belt, and the synchronous belt can maintain the same speed of rotation and movement.

4. The automatic correction type intelligent stacking and packaging line according to claim 3, characterized in that: Multiple synchronous pulleys are evenly installed between the two fixed plates. A buffer belt is fixedly installed on the inner side of the upper end of the synchronous belt to prevent deformation of the upper area of ​​the synchronous belt. An avoidance area is provided at the upper end of the synchronous pulley to adapt to the buffer belt and prevent interference with the buffer belt.

5. The automatic correction type intelligent stacking and packaging line according to claim 3, characterized in that: Two synchronous wheels are installed at both ends of the two fixed plates, and the buffer plate is fixedly installed between the two fixed plates and located between the two synchronous wheels.

6. The automatic correction type intelligent stacking and packaging line according to claim 1, characterized in that: The stacking and adjusting conveying mechanism includes a second frame, a second conveyor belt, a second motor mounting plate, a first connecting rod, a second support leg, a second geared motor, a second sprocket drive assembly, a third support leg, a third geared motor, a third sprocket drive assembly, a sixth rotating shaft, a fourth sprocket drive assembly, a third bevel gear, a seventh rotating shaft, a fourth bevel gear, a telescopic drive shaft, a fifth bevel gear, an eighth rotating shaft, a rack, a third spur gear, a third support, a sixth bevel gear, a fourth support, a fifth support, a second drive roller, a ninth rotating shaft, a first adjusting roller, a second adjusting roller, and a second tail roller. The second frame consists of an outer frame and an inner frame. The inner frame can slide and extend relative to the outer frame; one end of the outer frame is oscillating between two support legs via two sixth pivots; the drive roller two is rotatably mounted on the outer frame via a ninth pivot; the tail roller two is rotatably mounted on the inner frame; the adjusting roller one is rotatably mounted on the lower side of the inner frame via two symmetrically distributed fourth supports and is located between the drive roller two and the tail roller two; the adjusting roller two is rotatably mounted on the lower side of the outer frame via two symmetrically distributed fifth supports and is located below the adjusting roller one and biased towards the tail roller two; the drive roller two and the tail roller two are connected by a transmission belt two, and the adjusting roller... One cylinder and two adjustable rollers are mounted on the inner side of the conveyor belt. A third geared motor is fixed to the outer frame via a motor mounting plate. The output end of the third geared motor is connected to the second drive roller via a sprocket drive assembly. A seventh rotating shaft is rotatably mounted on one side of the outer frame, and an eighth rotating shaft is rotatably mounted on one side of the inner frame. The two ends of the telescopic drive shaft are rotatably mounted on one side of the outer and inner frames respectively via two third supports. The seventh rotating shaft and the sixth rotating shaft on the same side are connected via a sprocket drive assembly. The sprocket mounted on the sixth rotating shaft in the sprocket drive assembly is fixed to the corresponding support leg. The connection is as follows: the sixth rotating shaft passes through the circular hole in the middle of the sprocket; the third bevel gear is fixedly installed on the seventh rotating shaft, the fourth bevel gear is fixedly installed on one end of the telescopic transmission shaft, the sixth bevel gear is fixedly installed on the other end of the telescopic transmission shaft, the fifth bevel gear is fixedly installed on one end of the eighth rotating shaft, and the third spur gear is fixedly installed on the other end of the eighth rotating shaft; the rack is fixed to the outer frame, and the third spur gear meshes with the rack; two support legs are fixedly installed on the lower side of the two fifth supports; a reduction motor is installed on the lower side of the frame, and the reduction motor and the sixth rotating shaft are connected by a sprocket transmission assembly.

7. The automatic correction type intelligent stacking and packaging line according to claim 6, characterized in that: The motor mounting plate 2 is fixedly installed on the lower side of the outer frame by four first connecting rods; A second connecting rod is fixedly connected in the middle of the second frame; Several idlers are evenly arranged on the inner side of the conveyor belt. A cushioning pad is fixedly installed at the lower end of the third outrigger.

8. The automatic correction type intelligent stacking and packaging line according to claim 1, characterized in that: The end conveying mechanism includes a frame three, a conveyor belt three, a geared motor four, side baffles, a sprocket drive assembly five, a rear baffle, a guide rod cylinder, a cylinder mounting plate, a sixth support, a roller three, and an idler roller three. The frame three has a support leg four fixed to its bottom. The roller three is divided into a drive roller three and a tail roller three, which are rotatably mounted between the frame three. The geared motor four is fixed to one side of the frame three and connected to the drive roller three via the sprocket drive assembly five. The drive roller three and the tail roller three are connected by a ring drive via the conveyor belt three. Several idler rollers three are evenly arranged inside the conveyor belt three. Multiple sets of side baffles are evenly fixedly mounted on the conveyor belt three. The cylinder mounting plate is fixedly mounted to one side of the frame three via the sixth support. The guide rod cylinder is fixedly mounted on the cylinder mounting plate, and a rear baffle is fixedly mounted at the output end of the guide rod cylinder for limiting, regulating, and pushing the stacked boxes for discharge.

9. The automatic correction type intelligent stacking and packaging line according to claim 8, characterized in that: The side baffle assembly includes a side baffle and a buffer plate. The two side baffles are symmetrically and adjustablely mounted on the conveyor belt. The side baffles have an inclined guide plate near the stacking and adjusting conveyor mechanism. The buffer plate is mounted on the opposite wall surface of the two side baffles.

10. An automatic correction type intelligent stacking and packaging line according to claim 9, characterized in that: Two magnetic blocks are fixedly installed on each side baffle, and magnetic blocks are installed on the inner side of the conveyor belt. The side baffles are installed on the conveyor belt through the cooperation of the corresponding magnetic blocks and magnetic blocks.

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