Packaging carton processing conveyor

Abstract

The invention relates to the technical field of conveying equipment, in particular to a packaging carton processing conveyor which comprises supports distributed at equal intervals, and two sets of symmetrically-distributed conveying frame bodies are fixedly installed at the top ends of the supports; the conveying rollers are rotationally arranged between the conveying frame bodies at equal intervals; the driving unit is arranged at the bottom of the conveying frame body and used for driving the conveying rollers to rotate; the side blocking mechanisms are arranged on the two sides of the conveying frame body, and each side blocking mechanism comprises a protection plate capable of being adjusted in a lifting mode; the stopping mechanism is fixedly arranged between the conveying frame bodies, and the stopping mechanism comprises a liftable baffle; and the connecting mechanism comprises an inserting rod and an inserting frame which are arranged at the two ends of the conveying frame body. According to the side blocking mechanism, a protection plate can be lifted to adapt to different cartons, falling is prevented, production is guaranteed, a distance sensor is in linkage with a baffle, the cartons are paused, machining is convenient, efficiency is improved, cost is reduced, the conveyor can be flexibly spliced through a connecting mechanism, the conveying length is adjusted according to needs, the conveyor is suitable for different production scales, and the using effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular to a packaging carton processing conveyor. Background Art

[0002] In the packaging carton processing industry, conveyors are the core equipment for achieving efficient carton circulation. Their performance directly affects production efficiency and product quality. However, traditional packaging carton processing conveyors have many problems that need to be solved in practical applications.

[0003] In terms of safety, the guard plates on both sides of traditional conveyors are fixed in height and cannot accommodate cartons of varying sizes. When conveying taller or shorter cartons, the guard plates cannot effectively block them, causing them to easily fall from the sides, resulting in product damage and material waste. According to statistics, in companies using traditional conveyors, the product loss rate due to dropped cartons is as high as 8%-12%. Furthermore, frequent shutdowns to retrieve dropped cartons seriously impact production continuity.

[0004] In terms of production efficiency, traditional conveyors lack a pause function, making it difficult for cartons to stop midway during transport. When cartons need to be filled with materials, printed on, or processed, they must be moved to a dedicated area and then returned to the conveyor line. This not only consumes a lot of manpower and time, but also easily causes cartons to deform and break due to manual handling, reducing product qualification rates. Furthermore, frequent manual handling and positioning operations increase the risk of operational errors, affecting production efficiency and product quality stability.

[0005] In terms of conveying flexibility, traditional conveyors have fixed lengths, making them difficult to adjust to changes in production scale and demand. Small businesses have limited production line space, and overly long conveyors take up significant space and have low utilization rates. In large-scale industrial production, fixed-length conveyors are unable to meet the demands of large-scale, long-distance transport, forcing companies to purchase multiple conveyors of varying specifications, increasing equipment procurement and maintenance costs.

[0006] Therefore, the development of a packaging carton processing conveyor with flexible safety protection, efficient processing pause, and the ability to adjust the conveying length as needed has become an urgent need to improve the production efficiency, reduce costs, and ensure product quality in the packaging carton processing industry. Summary of the Invention

[0007] The purpose of the present invention is to solve the defects in the prior art and to propose a packaging carton processing conveyor.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A packaging carton processing conveyor, characterized by comprising: The brackets are evenly spaced, and two sets of symmetrically distributed conveying frames are fixed on the top of the brackets; Conveyor rollers are rotatably arranged between the conveyor frames at equal intervals; The driving unit is arranged at the bottom of the conveying frame and is used to drive the conveying roller to rotate; Side blocking mechanisms are provided on both sides of the conveying frame, and the side blocking mechanisms include lifting and lowering adjustable guard plates; A blocking mechanism is fixedly arranged between the conveying frames, and the blocking mechanism includes a liftable baffle; A connecting mechanism comprising an insertion rod and an insertion frame provided at both ends of the conveyor frame, and an automatic locking assembly for locking the insertion rod into the insertion frame after adjacent conveyors are docked; The blocking mechanism triggers the electric telescopic rod through the distance sensor to control the lifting of the baffle, and the side blocking mechanism adjusts the height of the guard plate through the telescopic cylinder.

[0009] As a further solution of the present invention: the blocking mechanism includes: A fixed shaft is fixed to the inner wall of the conveying frame, and the electric telescopic rod is rotatably connected to the outer side of the fixed shaft; A rotating shaft is rotatably mounted between adjacent conveying frames, a baffle is fixedly mounted on the outer side of the rotating shaft, and a fixing plate is provided at the bottom of the baffle; A connecting shaft is fixed to the outer wall of the fixed plate, and the connecting shaft is sleeved with the collar at the telescopic end of the electric telescopic rod; The support plate is fixed between the conveying frames, and the distance sensor is arranged on the upper surface of the support plate.

[0010] As a further solution of the present invention: the baffle lifting path is located in the gap between adjacent conveying rollers, and the top is higher than the surface of the conveying roller when rising, and the top is lower than the surface of the conveying roller when descending.

[0011] As a further solution of the present invention: the side stop mechanism includes: A fixed frame is fixed to the lower surface of the conveying frame, wherein a telescopic cylinder is fixedly installed in the fixed frame, and a lifting plate is fixedly installed on the telescopic end of the telescopic cylinder, and a plurality of vertical plates are provided on the upper surface of the lifting plate; A movable rod passes through the vertical plate and is movably connected to the vertical plate, wherein one end of the movable rod is provided with a blocking piece and the other end is connected to the guard plate; The guard plate includes a horizontal section parallel to the conveying frame body and a guide section bent outwards by 120 degrees.

[0012] As a further solution of the present invention: a fixed frame is provided at the top of the vertical plate, in which a positioning plate connected to the guard plate is movably installed, a threaded hole is opened on the surface of the fixed frame, and a locking bolt is threadedly connected in the threaded hole, and a turntable is fixedly installed on the top of the locking bolt.

[0013] As a further solution of the present invention: an inclined plate is provided on the outside of the horizontal section of the guard plate, and a stopper is provided on the outer wall of the inclined plate, so that the guide sections of adjacent guard plates are in a spacing alignment state when in contact with the stopper.

[0014] As a further solution of the present invention: the connecting mechanism includes: The fixed block is provided on the lower surface of the conveying frame, and the insertion rod is fixed to the lower end of the fixed block; the insertion frame is provided on the lower surface of the conveying frame, and is used to be plugged into the insertion rod of the adjacent conveyor; The vertical plate is fixed to the outer wall of the conveying frame, and the automatic locking component is arranged on the vertical plate.

[0015] As a further solution of the present invention: the automatic locking assembly includes: A locking block passing through the vertical plate; A rotating rod is rotatably arranged at the end of the locking block, a handle is fixedly installed on one end of the rotating rod away from the locking block, and a limiting piece and a counterweight are provided on the outer side of the rotating rod; The stop frame is fixed to the outer wall of the vertical plate, and the limiting piece can be rotated into the gap between the stop frame and the vertical plate to form a lock.

[0016] As a further solution of the present invention: a locking hole cooperating with the locking block is opened on the outer wall of the insertion rod. When the insertion rod is inserted into the insertion frame, the gravity of the counterweight block drives the limiting piece to rotate to the locking position.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This packaging carton processing conveyor has efficient and stable basic conveying performance. During actual operation, the cartons to be conveyed are placed above the conveyor rollers. After the drive unit is started, it can accurately drive all conveyor rollers to rotate synchronously, providing stable and continuous power for carton conveying. Whether it is a small packaging box or a large transport carton, the conveyor can complete the conveying task at a constant speed and stable state, providing a reliable basic guarantee for the subsequent processes on the packaging carton processing production line, and effectively improving the consistency and stability of the overall production process.

[0018] The side guard mechanism installed on both sides of the conveying frame is an important part of ensuring conveying safety. Among them, the guard plate that can be adjusted up and down is the core part of the side guard mechanism. Due to the various sizes and specifications of cartons in actual production, traditional fixed-height guard plates are difficult to meet diverse protection needs. The adjustable guard plates of this conveyor can be flexibly adjusted according to the height of the cartons. Whether it is a shorter small carton or a taller large carton, the guard plates can be accurately adapted to form an effective barrier on both sides of the carton. During high-speed transportation, the guard plates can greatly reduce the risk of cartons falling from both sides, avoiding problems such as product damage and material waste caused by falling cartons. At the same time, it also prevents production line blockages and production interruptions caused by falling cartons, ensuring the orderly progress of production operations, reducing the company's economic losses caused by unexpected situations, and improving production safety.

[0019] In the processing of packaging cartons, additional operations such as filling materials and coding are often required. This conveyor is cleverly designed with an intelligent pause mechanism. When the carton moves into the monitoring range of the distance sensor, the sensor can quickly and accurately capture the carton signal and immediately trigger the electric telescopic rod to move, causing the baffle to rise rapidly. At this time, even if the conveyor roller continues to rotate, the raised baffle can effectively block the carton from moving forward, causing it to temporarily stop at the designated location. With this intelligent design, operations such as filling materials and coding do not require the cartons to be moved to a dedicated area, but can be efficiently completed directly during the conveying process. This not only significantly improves production efficiency, reduces the time and effort required for manual handling and positioning, and reduces labor costs, but also avoids errors that may occur due to frequent manual operations, ensures the accuracy and consistency of processing operations, and improves product processing quality.

[0020] Taking into account the dynamic changes in production scale and demand in actual production scenarios, this packaging carton processing conveyor is equipped with a convenient connection mechanism. Operators can easily connect different conveyors end to end through the connection mechanism according to actual needs, flexibly adjusting the conveying length. In the compact production lines of small enterprises, shorter conveying routes can be spliced ​​as needed to meet the needs of small-scale production; while in large-scale industrial production, by splicing a large number of conveyors, large-scale, long-distance conveying routes can be constructed to meet the material transportation requirements of large-scale production. This flexible splicing method greatly enhances the applicability and versatility of the conveyor, enabling the equipment to quickly respond to changes in production needs, avoiding the situation where equipment is idle or unable to meet production needs due to fixed conveying lengths, saving enterprises equipment investment costs, improving equipment utilization efficiency and production flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram from a first perspective of a packaging carton processing conveyor provided by an embodiment of the present invention; Figure 2 for Figure 1 A in the figure shows the enlarged structural diagram; Figure 3 A schematic structural diagram of a locking block in a packaging carton processing conveyor provided by an embodiment of the present invention; Figure 4 A schematic structural diagram from a second perspective of a packaging carton processing conveyor provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a packaging carton processing conveyor from a third perspective provided by an embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure at point B in FIG. Figure 7 A schematic structural diagram of a blocking mechanism in a packaging carton processing conveyor provided by an embodiment of the present invention; Figure 8 A schematic structural diagram of a protective plate in a packaging carton processing conveyor provided by an embodiment of the present invention; Figure 9 This is a schematic structural diagram from a fourth perspective of a packaging carton processing conveyor provided in an embodiment of the present invention.

[0022] In the figure: 101-conveying frame, 102-bracket, 103-conveying roller, 104-driving unit, 201-fixed shaft, 202-electric telescopic rod, 203-rotating shaft, 204-baffle, 205-fixed plate, 206-connecting shaft, 207-ring, 301-support plate, 302-distance sensor, 401-fixed frame, 402-telescopic cylinder, 403-lifting plate, 404-vertical plate, 405-movable plate Moving rod, 406-guard plate, 407-block plate, 408-fixed frame, 409-positioning plate, 410-turntable, 411-locking bolt, 501-inclined plate, 502-block, 601-fixed block, 602-insertion rod, 603-insertion frame, 701-locking hole, 702-vertical plate, 703-locking block, 704-rotating rod, 705-handle, 706-block frame, 707-limiting plate, 708-counterweight block. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1-9As shown, a packaging carton processing conveyor provided by an embodiment of the present invention includes: equally spaced brackets 102, two groups of symmetrically distributed conveying frames 101 are fixedly installed on the top of the brackets 102; conveying rollers 103 are equidistantly arranged to rotate between the conveying frames 101; a driving unit 104 is arranged at the bottom of the conveying frame 101, and is used to drive the conveying rollers 103 to rotate; the specific structure of the driving unit 104 is not limited. In this embodiment, preferably, the driving unit 104 includes a driving motor fixedly arranged on the lower surface of the conveying frame 101, the output end of the driving motor is rotatably connected to the driving gear, the end of the conveying roller 103 is fixedly installed with a transmission gear, and the transmission gear is located in the conveying frame 101, and the adjacent transmission gears are connected by a first crawler belt transmission, and one of the transmission gears in the conveying frame and the driving gear are connected by a second crawler belt transmission, through The driving motor drives the driving gear to rotate, and the driving gear drives the transmission gear to rotate through the second crawler. Since adjacent transmission gears are connected through the first crawler transmission, all transmission gears rotate synchronously, and all conveying rollers 103 rotate synchronously to realize the conveying operation of cartons; the side block mechanism is arranged on both sides of the conveying frame 101, and the side block mechanism includes a guard plate 406 that can be raised and lowered; the blocking mechanism is fixedly arranged between the conveying frames 101, and the blocking mechanism includes a baffle 204 that can be raised and lowered; the connecting mechanism, the connecting mechanism includes an insertion rod 602 and an insertion frame 603 arranged at both ends of the conveying frame 101, and an automatic locking assembly that locks the insertion rod 602 in the insertion frame 603 after the adjacent conveyors are docked; the blocking mechanism triggers the electric telescopic rod 202 through the distance sensor 302 to control the lifting of the baffle 204, and the side block mechanism adjusts the height of the guard plate 406 through the telescopic cylinder 402.

[0025] The cartons that need to be transported can be placed on top of the transport rollers 103, and then the drive unit 104 can be used to drive the transport rollers 103 to rotate synchronously, so that the cartons can be transported on top of the transport frame 101. The side guard mechanisms on both sides of the transport frame 101 are equipped with liftable and adjustable guard plates 406, which are the key to ensuring the safety and reliability of the transport process. In actual production, the sizes of cartons are often varied, and the height-adjustable guard plates 406 can flexibly adapt to cartons of different heights. The effective blocking of both sides of the cartons greatly reduces the risk of cartons falling from both sides during transportation, avoids product damage, material waste, and possible production interruptions caused by falling cartons, and ensures the smooth progress of the production process. In the process of packaging cartons, it is often necessary to perform additional operations such as filling materials and coding on the cartons. When the cartons When it moves to the monitoring range of the distance sensor 302, the sensor quickly captures the signal and triggers the electric telescopic rod 202 to move, causing the baffle 204 to rise. While the conveyor roller 103 continues to rotate, it successfully blocks the carton from moving forward and causes it to stop briefly. This design allows these operations to be completed efficiently during the conveying process, without the need to move the carton to other specialized areas for processing. This not only greatly improves production efficiency, but also reduces the time and energy required for manual handling and positioning, reduces labor costs, and also reduces the errors that may occur due to frequent manual operations. Furthermore, in actual production scenarios, production scale and demand may change at any time, sometimes requiring a shorter conveying distance and sometimes requiring a longer conveying line. With the help of the connecting mechanism, operators can easily connect different conveyors end to end and flexibly adjust the conveying length according to actual needs. This convenient splicing method is suitable for compact production lines of small enterprises, and can also meet the large-scale, long-distance conveying requirements of large-scale industrial production, with better use effect.

[0026] As an embodiment of the present invention, please refer to Figure 5 、 Figure 6 and Figure 7 The blocking mechanism includes: a fixed shaft 201, fixed to the inner wall of the conveyor frame 101, with an electric telescopic rod 202 rotatably connected to the outer side of the fixed shaft 201; a rotating shaft 203, rotatably mounted between adjacent conveyor frames 101, with a baffle 204 fixedly mounted on the outer side of the rotating shaft 203, and a fixed plate 205 at the bottom of the baffle 204; a connecting shaft 206, fixed to the outer wall of the fixed plate 205, and interlocked with a collar 207 at the telescopic end of the electric telescopic rod 202; a support plate 301, fixed between the conveyor frames 101, with a distance sensor 302 disposed on the upper surface of the support plate 301. The telescopic movement of the electric telescopic rod 202 is accurately transmitted to the baffle 204, enabling the baffle 204 to rotate. The distance sensor 302 can accurately capture the position of the carton, providing a basis for controlling the raising and lowering of the baffle 204, thereby improving the operating accuracy and reliability of the blocking mechanism.

[0027] As an embodiment of the present invention, please refer to Figure 5 、 Figure 6 and Figure 7 , the lifting path of the baffle 204 is located in the gap between the adjacent conveyor rollers 103. When it rises, the top is higher than the surface of the conveyor roller 103, and when it falls, the top is lower than the surface of the conveyor roller 103. When the distance sensor 302 captures the carton signal, the electric telescopic rod 202 extends, driving the ring 207 to move, and the ring 207 pulls the connecting shaft 206 to make the baffle 204 rotate and rise around the axis of the rotating shaft 203, higher than the surface of the conveyor roller 103, blocking the carton from moving forward; after the operation is completed, the electric telescopic rod 202 contracts, and the baffle 204 falls to below the surface of the conveyor roller 103, releasing the obstruction to the carton, effectively realizing that the carton can stop and continue to be conveyed as needed when the conveyor roller 103 continues to rotate, meeting the needs of carton positioning and operation in the production process, and improving production efficiency. At the same time, the distance sensor 302 can also record the number of conveyed cartons, which is convenient for production statistics and management.

[0028] As an embodiment of the present invention, please refer to Figure 1 、 Figure 4 and Figure 8 The side block mechanism includes: a fixed frame 401, which is fixed to the lower surface of the conveying frame 101, a telescopic cylinder 402 is fixedly installed in the fixed frame 401, and a lifting plate 403 is fixedly installed on the telescopic end of the telescopic cylinder 402, and the upper surface of the lifting plate 403 is provided with multiple groups of vertical plates 404; a movable rod 405, which passes through the vertical plate 404 and is movably connected to the vertical plate 404, one end of the movable rod 405 is provided with a blocking piece 407, and the other end is connected to the guard plate 406; the guard plate 406 includes a horizontal section parallel to the conveying frame body 101 and a guide section bent outward 120 degrees. The telescopic cylinder 402 can drive the lifting plate 403 and the vertical plate 404 to move up and down, so as to adjust the height of the guard plate 406 to adapt to cartons of different heights. The movable rod 405 makes the position of the guard plate 406 flexibly adjustable, and the design of the parallel section and the bending section can not only prevent the carton from deflecting, but also guide the carton into the appropriate position.

[0029] As an embodiment of the present invention, please refer to Figure 1 、 Figure 4 and Figure 8A fixed frame 408 is provided at the top of the vertical plate 404, in which a positioning plate 409 connected to the guard plate 406 is movably installed. A threaded hole is provided on the surface of the fixed frame 408, and a locking bolt 411 is threadedly connected to the threaded hole. A turntable 410 is fixedly installed on the top of the locking bolt 411. By moving the positioning plate 409 in the fixed frame 408, the distance between the guard plate 406 and the carton is changed, which can adapt to cartons of different sizes. Rotating the turntable 410 drives the locking bolt 411 to rotate, so that the locking bolt 411 resists the positioning plate 409 in the fixed frame 408, and the position of the guard plate 406 can be locked, effectively realizing the flexible adjustment and reliable locking of the position of the guard plate 406, ensuring that the side block mechanism can adapt to cartons of different sizes, and improving the versatility and ease of use of the equipment.

[0030] As an embodiment of the present invention, please refer to Figure 8 , an inclined plate 501 is provided on the outside of the horizontal section of the guard plate 406, and a stop block 502 is provided on the outer wall of the inclined plate 501. When the guide sections of adjacent guard plates 406 contact the stop blocks 502, a spacing alignment state is formed. When adjusting the position of the guard plates, first accurately adjust and lock a group of guard plates, and then move the other guard plates to make the stop blocks 502 on the outer wall of the inclined plate 501 fit with the bending section of the adjacent guard plates, and then lock the position of the guard plates. Using the inclined plate 501 and the stop blocks 502 as positioning references, the positions of adjacent guard plates can be adjusted quickly and accurately to keep them consistent, which greatly improves the efficiency of guard plate position adjustment and reduces adjustment time and manual operation errors.

[0031] As an embodiment of the present invention, please refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 9 The connecting mechanism includes: a fixed block 601, which is provided on the lower surface of the conveying frame 101, and the insertion rod 602 is fixed to the lower end of the fixed block 601; an insertion frame 603 is provided on the lower surface of the conveying frame 101, and is used to be plugged into the insertion rod 602 of the adjacent conveyor; a vertical plate 702, which is fixed to the outer wall of the conveying frame 101, and an automatic locking assembly is provided on the vertical plate 702. The cooperation of the insertion rod 602 and the insertion frame 603 realizes the initial splicing of the conveyor, which is convenient and quick.

[0032] As an embodiment of the present invention, please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 9When the lock body 710 is in the unlocking state, the lock body 710 is locked, and the lock body 710 is locked.

[0033] As an embodiment of the present invention, please refer to Figure 3 When the lock member 710 is unlocked, the lock member 710 is locked in the unlocking state, and the lock member 710 is locked in the unlocking state.

[0034] It should be noted that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A packaging carton processing conveyor, characterized in that: include: Equidistantly distributed brackets (102), with two sets of symmetrically distributed conveying brackets (101) fixedly mounted on the top of the brackets (102); Conveying rollers (103) are rotatably arranged between the conveying frames (101) at equal intervals; A driving unit (104) is provided at the bottom of the conveying frame (101) and is used to drive the conveying roller (103) to rotate; A side blocking mechanism is provided on both sides of the conveying frame (101), wherein the side blocking mechanism comprises a lifting and lowering adjustable guard plate (406); A blocking mechanism is fixedly arranged between the conveying frames (101), and the blocking mechanism includes a liftable baffle (204); A connecting mechanism, comprising an insertion rod (602) and an insertion frame (603) provided at both ends of the conveying frame (101), and an automatic locking assembly for locking the insertion rod (602) in the insertion frame (603) after adjacent conveyors are docked; The blocking mechanism triggers the electric telescopic rod (202) via the distance sensor (302) to control the lifting of the baffle (204), and the side blocking mechanism adjusts the height of the guard plate (406) via the telescopic cylinder (402).

2. A packaging carton processing conveyor according to claim 1, characterized in that: The blocking mechanism comprises: A fixed shaft (201) is fixed to the inner wall of the conveying frame (101), and the electric telescopic rod (202) is rotatably connected to the outer side of the fixed shaft (201); A rotating shaft (203) is rotatably mounted between adjacent conveying frames (101), a baffle (204) is fixedly mounted on the outside of the rotating shaft (203), and a fixing plate (205) is provided at the bottom of the baffle (204); A connecting shaft (206) is fixed to the outer wall of the fixed plate (205), and the connecting shaft (206) is sleeved with a collar (207) at the telescopic end of the electric telescopic rod (202); The support plate (301) is fixed between the conveying frames (101), and the distance sensor (302) is arranged on the upper surface of the support plate (301).

3. A packaging carton processing conveyor according to claim 2, characterized in that: The lifting path of the baffle (204) is located in the gap between adjacent conveying rollers (103), and the top is higher than the surface of the conveying roller (103) when it is lifted, and the top is lower than the surface of the conveying roller (103) when it is lowered.

4. The packaging carton processing conveyor according to claim 1, characterized in that: The side stop mechanism comprises: A fixed frame (401) is fixed to the lower surface of the conveying frame (101), a telescopic cylinder (402) is fixedly installed in the fixed frame (401), and a lifting plate (403) is fixedly installed at the telescopic end of the telescopic cylinder (402), and a plurality of vertical plates (404) are provided on the upper surface of the lifting plate (403); A movable rod (405) passes through the vertical plate (404) and is movably connected to the vertical plate (404); one end of the movable rod (405) is provided with a blocking piece (407), and the other end is connected to the guard plate (406); The guard plate (406) includes a horizontal section parallel to the conveying frame (101) and a guide section bent outwards at 120 degrees.

5. The packaging carton processing conveyor according to claim 4, characterized in that: A fixing frame (408) is provided at the top of the vertical plate (404), in which a positioning plate (409) connected to the guard plate (406) is movably installed. A threaded hole is opened on the surface of the fixing frame (408), and a locking bolt (411) is threadedly connected to the threaded hole. A turntable (410) is fixedly installed at the top of the locking bolt (411).

6. The packaging carton processing conveyor according to claim 5, characterized in that: An inclined plate (501) is provided on the outside of the horizontal section of the guard plate (406), and a stopper (502) is provided on the outer wall of the inclined plate (501). When the guide sections of adjacent guard plates (406) contact the stopper (502), a spacing alignment state is formed.

7. The packaging carton processing conveyor according to claim 1, characterized in that: The connecting mechanism comprises: The fixed block (601) is provided on the lower surface of the conveying frame (101), and the insertion rod (602) is fixed to the lower end of the fixed block (601); the insertion frame (603) is provided on the lower surface of the conveying frame (101) and is used for plugging with the insertion rod (602) of the adjacent conveyor; The vertical plate (702) is fixed to the outer wall of the conveying frame (101), and the automatic locking component is arranged on the vertical plate (702).

8. The packaging carton processing conveyor according to claim 7, characterized in that: The automatic locking assembly comprises: A locking block (703) passing through the vertical plate (702); a rotating rod (704) rotatably arranged at the end of the locking block (703); a handle (705) is fixedly mounted on one end of the rotating rod (704) away from the locking block (703); and a limiting piece (707) and a counterweight (708) are provided on the outer side of the rotating rod (704); The stop frame (706) is fixed to the outer wall of the vertical plate (702), and the limiting piece (707) can be rotated into the gap between the stop frame (706) and the vertical plate (702) to form a locking.

9. The packaging carton processing conveyor according to claim 8, characterized in that: The outer wall of the insertion rod (602) is provided with a locking hole (701) that cooperates with the locking block (703). When the insertion rod (602) is inserted into the insertion frame (603), the gravity of the counterweight block (708) drives the limiting piece (707) to rotate to the locking position.

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