Carton feeding and discharging mechanism

Abstract

The utility model relates to a carton feeding and discharging mechanism which comprises a first carton conveying belt, a second carton conveying belt and a third carton conveying belt, and a hollow channel is arranged between the first carton conveying belt and the second carton conveying belt and used for arranging a first chain conveying mechanism. A hollowed-out channel is formed in the middle of the third carton conveying belt and used for arranging a second chain conveying mechanism, the first chain conveying mechanism and the second chain conveying mechanism each comprise a driving chain wheel, a driven chain wheel and a chain wound around the driving chain wheel and the driven chain wheel, and carton pushing plates are fixedly arranged on the chains at intervals. A driving chain wheel of the first chain conveying mechanism is arranged at the position close to the output end of the second conveying belt, a driven chain wheel is arranged at the position close to the input end of the first conveying belt, and a driving chain wheel and a driven chain wheel of the second chain conveying mechanism are arranged at the output end and the input end of the third carton conveying belt respectively. The time for waiting for all the cartons at present is greatly saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a mechanism in a rice bag packaging device, in particular to a carton inlet and outlet mechanism. Background Art

[0002] At present, in rice bag packaging equipment, when cartons are conveyed, the cartons enter one by one. When all the cartons are input to the rice bag loading station (i.e., the station where rice bags are put into the cartons), the manipulator starts to load the rice bags, resulting in low work efficiency.

[0003] For example, in the Chinese patent "A packing device for a rice packing box machine", the publication number is CN219565630U. Its cartons also enter one by one. When all the cartons are input to the rice bag loading station (i.e., directly below the moving platform in the specification), the moving platform starts to load the rice bags, resulting in low work efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide a carton inlet and outlet mechanism, which is reasonably designed and is conducive to realizing the unified entry of each carton into the packing station and improving the efficiency.

[0005] The technical solution of the utility model lies in:

[0006] The carton inlet and outlet mechanism of the utility model is characterized in that: it includes a carton first conveyor belt, a carton second conveyor belt and a carton third conveyor belt which are arranged adjacent to each other. A hollow channel is provided between the carton first conveyor belt and the carton second conveyor belt for arranging a first chain conveyor mechanism. A hollow channel is provided in the middle of the carton third conveyor belt for arranging a second chain conveyor mechanism. Both the first chain conveyor mechanism and the second chain conveyor mechanism include a driving sprocket, a driven sprocket and a chain wound around the driving sprocket and the driven sprocket. Carton push plates are fixedly arranged at intervals on the chain. The driving sprocket of the first chain conveyor mechanism is arranged at a position close to the output end of the second conveyor belt, and the driven sprocket is at a position close to the input end of the first conveyor belt. The driving sprocket and the driven sprocket of the second chain conveyor mechanism are respectively arranged at the output end and the input end of the carton third conveyor belt.

[0007] Preferably, conveyor belt driving shafts and conveyor belt driven shafts are provided on the above-mentioned carton first conveyor belt, carton second conveyor belt and carton third conveyor belt. One end of the conveyor belt driving shaft extends out and is fixedly connected with a conveyor belt driving sprocket. The conveyor belt driving sprocket is connected with the sprocket on the motor output shaft through a chain.

[0008] Preferably, the rotating shaft of the above-mentioned driving sprocket extends out and is fixedly connected with a carton conveying mechanism synchronous pulley. The carton conveying mechanism synchronous pulley is connected with the synchronous pulley on the motor output shaft through a synchronous belt.

[0009] Preferably, a carton fixing guardrail is provided on the upper first side of the above-mentioned first conveyor belt and the second conveyor belt of the carton. A retractable carton guardrail is provided on the upper second side of the first conveyor belt and the second conveyor belt of the carton, so as to facilitate adjusting the distance between the two guardrails to adapt to the carton size.

[0010] Preferably, the first end of the above-mentioned retractable carton guardrail is rotatably connected to the carton conveyor belt frame through a vertical rod, and a guardrail adjusting mechanism is provided at the second end of the retractable carton guardrail.

[0011] Preferably, the above-mentioned guardrail adjusting mechanism includes a first stepping motor installed on the carton conveyor belt frame and a carton guardrail adjustment screw rod driven by the first stepping motor. A carton guardrail support rod mounting seat is threadedly connected to the carton guardrail adjustment screw rod. A carton guardrail support rod is provided on the carton guardrail support rod mounting seat, and the carton guardrail support rod is connected to the second end of the retractable carton guardrail.

[0012] Preferably, a carton guardrail adjustment guide rod is installed on the above-mentioned carton conveyor belt frame, and the carton guardrail support rod mounting seat is slidably connected to the carton guardrail adjustment guide rod.

[0013] Preferably, two groups of parallel and spaced guide box guardrail plates are provided above the above-mentioned third conveyor belt of the carton. A plurality of windows are opened on the guide box guardrail plates, and rotatable and swingable box blocking plates are rotatably hinged in the plurality of windows. Each box blocking plate is fixedly connected with a turning arm, and each turning arm is hinged to a turning push rod. The turning push rod is connected to the free end of the telescopic rod of the box blocking telescopic cylinder, and the cylinder body of the box blocking telescopic cylinder is connected to the guide box guardrail plate.

[0014] The working principle of the carton inlet and outlet mechanism of the present utility model is as follows: First, each carton is sequentially conveyed from the first conveyor belt to the second conveyor belt through the first chain conveying mechanism and the carton push plate thereon. When a certain number of cartons (taking four cartons as an example in this application) are gathered on the second conveyor belt, the first chain conveying mechanism, the second conveyor belt, the third conveyor belt, and the second chain conveying mechanism and the carton push plate thereon act synchronously (equivalent to using the second conveyor belt as a buffer zone for collecting multiple cartons. After a certain number of cartons are collected on the second conveyor belt, they are uniformly conveyed into the third conveyor belt, and the third conveyor belt serves as the carton loading station for rice bags), so that the cartons located on the second conveyor belt are uniformly fed into the third conveyor belt, greatly saving the efficiency of the existing method that requires waiting for all cartons to reach the third conveyor belt one by one before starting the manipulator to load rice bags. Description of the Drawings

[0015] Figure 1 is a perspective view of the rice bag packing machine;

[0016] Figure 2 is a perspective view of one angle of the rice bag lifting and moving mechanism;

[0017] Figure 3 is the perspective view of another angle of the rice bag lifting and moving mechanism;

[0018] Figure 4 is the perspective view of a part of the rice bag lifting and moving mechanism;

[0019] Figure 5 is the perspective view of a part of the rice bag lifting and moving mechanism;

[0020] Figure 6 is Figure 5 the sectional view of;

[0021] Figure 7 is the perspective view of one angle of the carton unpacking mechanism;

[0022] Figure 8 is the perspective view of another angle of the carton unpacking mechanism;

[0023] Figure 9 is the connecting perspective view of the first horizontal axis;

[0024] Figure 10 is the connecting perspective view of the second horizontal axis;

[0025] Figure 11 is the connecting perspective view of the first horizontal axis and the front unpacking board, etc.;

[0026] Figure 12 is Figure 11 the partial view of;

[0027] Figure 13 is the connecting perspective view of the second horizontal axis and the rear unpacking board, etc.;

[0028] Figure 14 is the connecting perspective view of the guide box guardrail plate and the box-blocking telescopic cylinder, etc.;

[0029] Figure 15 is the connecting perspective view of another angle of the guide box guardrail plate;

[0030] Figure 16 is the connecting perspective view of the box-blocking telescopic cylinder and the box-blocking board, etc.;

[0031] Figure 17 is the perspective view of one angle of the rice bag conveying mechanism;

[0032] Figure 18 is the perspective view of another angle of the rice bag conveying mechanism;

[0033] Figure 19 is the perspective view of the rice bag guardrail adjusting mechanism;

[0034] Figure 20 is Figure 18 the partial perspective view of;

[0035] Figure 21 It is a three-dimensional view of the carton conveying mechanism;

[0036] Figure 22 It is a partial three-dimensional view of the carton conveying mechanism;

[0037] Figure 23 It is a three-dimensional view of the guardrail adjusting mechanism;

[0038] Figure 24 It is a three-dimensional view of the carton inlet and outlet mechanism of the present utility model;

[0039] Figure 25 is Figure 11 A partial view from another perspective. Specific embodiments

[0040] To make the above features and advantages of the present utility model more understandable, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings, but the present utility model is not limited thereto.

[0041] The rice packaging box machine includes a frame 1, a rice bag conveying mechanism A, a carton conveying mechanism B, a carton unpacking mechanism C, and a rice bag lifting and moving mechanism D arranged in the frame 1. The carton unpacking mechanism C includes a plurality of unpacking plates that can keep the turning plates of the carton open.

[0042] Among them, the rice bag conveying mechanism A and the carton conveying mechanism B can be belt conveyors, roller conveyors, etc. for transporting rice bags and cartons. Other specific structures will be described in detail later. The rice bag lifting and moving mechanism D is used to transfer the rice bags on the rice bag conveying mechanism A into the cartons on the carton conveying mechanism B, and it can be a manipulator or a structure to be described in detail later.

[0043] The carton unpacking mechanism C includes two groups of unpacking mechanism lifting electric push rods C1 (cylinders can also be used) connected to the frame 1 and an unpacking mechanism lifting frame C2 connected to the free end of the unpacking mechanism lifting electric push rod. The frame 1 is provided with a lifting frame guide rail C3 for guiding the vertical sliding of the unpacking mechanism lifting frame C2. The unpacking mechanism lifting frame C2 is vertically guided through the lifting frame guide rail C3 and is lifted through the action of the unpacking mechanism lifting electric push rod C1 (which is beneficial for adapting to cartons of different height dimensions).

[0044] On the first side and the second side of the lifting frame C2 of the case-unloading mechanism, a first horizontal shaft C4 and a second horizontal shaft C5 that can both rotate are arranged in parallel. A number of sets of case-unloading plates that rotate with the horizontal shafts are provided on both the first horizontal shaft C4 and the second horizontal shaft C5. The case-unloading plates include side case-unloading plates C6 for keeping the side turnover plate K1 of the carton K in an open state, and front case-unloading plates C7 and rear case-unloading plates C8 for keeping the front turnover plate K2 and the rear turnover plate K3 of the carton in an open state. That is, the first horizontal shaft C4 and the second horizontal shaft C5 each have a number of sets of case-unloading plates. By providing a number of sets of case-unloading plates that rotate with the horizontal shafts on both the first horizontal shaft and the second horizontal shaft, the side case-unloading plates, the front case-unloading plates, and the rear case-unloading plates can achieve linkage actions, thereby reducing the problem of inconsistent action responses of the existing case-unloading plates (that is, through the mechanical linkage actions of the side case-unloading plates, the front case-unloading plates, and the rear case-unloading plates, the number of cylinders used is reduced, which is beneficial to reducing the time reserved for waiting for each cylinder to complete the action), and is beneficial to improving work efficiency.

[0045] A longitudinal sliding seat C9 is provided on the first side of the above-mentioned lifting frame C2 of the case-unloading mechanism. The first horizontal shaft C4 is rotatably hinged on the longitudinal sliding seat C9. The longitudinal sliding seat C9 is slidably connected to the longitudinal guide rail C10 on the lifting frame C2 of the case-unloading mechanism. The longitudinal sliding of the longitudinal sliding seat is driven by a first longitudinal cylinder C11 to achieve the sliding of the longitudinal sliding seat C9 in the longitudinal direction (the Y direction shown in the figure) (which is beneficial to adapting to cartons of different width dimensions).

[0046] A swing cylinder C12 (which can also be an electric push rod) is connected to the longitudinal sliding seat C9. The free end of the telescopic rod of the swing cylinder is fixedly connected to the first horizontal shaft C4 through a swing arm C13 (the first horizontal shaft C4 is rotatably hinged on the longitudinal sliding seat C9. One end of the swing arm C13 is connected to the free end of the telescopic rod of the swing cylinder, and the other end of the swing arm C13 is fixedly connected to the first horizontal shaft C4), so as to realize the rotation of the first horizontal shaft C4 and the side case-unloading plates C6 fixedly provided on the first horizontal shaft C4 under the action of the swing cylinder C12. Taking 4 groups of cartons as an example in the figure, that is, four groups of side case-unloading plates C6 are provided on the first horizontal shaft C4 (for keeping the side turnover plate on one side of the carton open).

[0047] The front box-unloading board C7 (used to keep the front turning board of the carton open at the front side) is fixedly connected to the first box-unloading longitudinal axis C14. The first box-unloading longitudinal axis C14 is rotatably connected to the first box-unloading longitudinal axis bushing C15. The first box-unloading longitudinal axis bushing C15 is fixedly connected to the longitudinal sliding seat C9. The end of the first box-unloading longitudinal axis is connected to the first cross axis C4 through a universal joint C16 (which can be a crosshead universal joint capable of realizing power transmission in the vertical direction). The first box-unloading longitudinal axis and the first cross axis C4 are arranged perpendicular or nearly perpendicular. When the first cross axis C4 rotates, the first box-unloading longitudinal axis C14 and the front box-unloading board C7 can be driven to rotate through the universal joint C16, so that the front turning board of the carton is in an open state. That is, by rotating the first cross axis C4, the side box-unloading board C6 and the front box-unloading board C7 on the first side can be swung, and the side turning board and the front turning board on the first side can be kept in an open state.

[0048] On the box-unloading mechanism lifting frame C2, there is a transverse sliding seat C17 that can move horizontally (in the X direction shown in the figure). The transverse sliding seat C17 is slidably connected to the transverse guide rail on the box-unloading mechanism lifting frame C2. The horizontal movement of the transverse sliding seat C17 is driven by the first horizontal cylinder C19. That is, under the action of the first horizontal cylinder C19, the transverse sliding seat C17 moves horizontally (which is beneficial for adapting to cartons of different lengths). The second cross axis C5 is rotatably hinged on the transverse sliding seat C17. The transverse sliding seat C17 is provided with a rotary cylinder C20 that can drive the second cross axis C5 to rotate. A number of groups of side box-unloading boards are provided on the second cross axis C5. By the action of the rotary cylinder C20, the second cross axis C5 and the side box-unloading boards on the second side rotate, and the second side turning board of the carton is kept in an open state.

[0049] The rear box-unloading board C8 is fixedly connected to the second box-unloading longitudinal axis C21. The second box-unloading longitudinal axis C21 is rotatably connected to the second box-unloading longitudinal axis bushing C22. The second box-unloading longitudinal axis bushing C22 is fixedly connected to the transverse sliding seat C17. The end of the second box-unloading longitudinal axis C21 is connected to the second cross axis C5 through a universal joint C16 (which can be a crosshead universal joint capable of realizing power transmission in the vertical direction). The second box-unloading longitudinal axis C21 and the second cross axis C5 are arranged perpendicular or nearly perpendicular. When the second cross axis C5 rotates, the second box-unloading longitudinal axis C21 and the rear box-unloading board C8 can be driven to rotate through the universal joint C16, so that the rear turning board of the carton is in an open state. That is, by rotating the second cross axis C5, the side box-unloading boards and the rear box-unloading board C8 on the second side can be swung, and the side turning board and the rear turning board on the second side can be kept in an open state.

[0050] The universal joint C16 can be a commercially available crosshead universal joint capable of achieving power transmission in the vertical direction, or have the following specific structure. The universal joint C16 of the present application includes two C-shaped blocks C23 and a connecting block C24 connected between the two C-shaped blocks. The first end of the connecting block is hinged to a C-shaped block through a first pin shaft, and the second end of the connecting block is fixedly connected to the other C-shaped block. The openings of the two C-shaped blocks are rotatably hinged on the horizontal shaft (the first horizontal shaft or the second horizontal shaft) or the longitudinal shaft of the box-unloading mechanism. When the horizontal shaft rotates, it drives the two C-shaped blocks to twist in sequence, and then drives the longitudinal shaft of the box-unloading mechanism to rotate.

[0051] In order to limit the positions of adjacent cartons, guide box guard plates C25 are provided below the first horizontal shaft and the second horizontal shaft on the lifting frame C2 of the box-unloading mechanism (one of the guide box guard plates is fixed on the lifting frame C2 of the box-unloading mechanism, and the other guide box guard plate is fixed on the longitudinal sliding seat C9. The guide box guard plate C25 is also provided above the third conveyor belt B23 of the carton). A plurality of windows C26 are opened on the guide box guard plate, and swingable box-blocking plates C27 are rotatably hinged in the plurality of windows. Each box-blocking plate is fixedly connected with a turning arm C28, and each turning arm is hinged to a turning push rod C29. The turning push rod C29 is connected to the free end of the telescopic rod of a box-blocking telescopic cylinder C30 (which can also be an electric push rod). The cylinder body of the box-blocking telescopic cylinder is connected to the guide box guard plate C25. Under the action of the box-blocking telescopic cylinder C30, the turning push rod C29 moves horizontally (the X direction shown in the figure), and then drives the turning arm C28 and the box-blocking plate C27 to swing. The swing of the box-blocking plate C27 has two working positions. One working position is to swing into the window C26 without affecting the progress of the carton along with the conveyor belt, and the other working position is to swing out of the window C26 to block the progress of the carton on the conveyor belt.

[0052] The rice packaging box machine is provided with several groups of box-unloading plates that rotate with the horizontal shafts on both the first horizontal shaft and the second horizontal shaft. The box-unloading plates include side box-unloading plates for keeping the side turnover plates of the carton in an open state, front box-unloading plates and rear box-unloading plates for keeping the front and rear turnover plates of the carton in an open state, so as to realize the linkage action of each side box-unloading plate with the front box-unloading plate and the rear box-unloading plate, thereby reducing the problem of inconsistent action responses of the existing box-unloading plates and being beneficial to improving work efficiency.

[0053] The rice bag lifting and moving mechanism D includes a first frame D1 fixedly provided on the frame 1, a first horizontal sliding seat D2 slidably connected to the first frame D1, and a first vertical frame D3 fixedly provided on the first horizontal sliding seat D2. The first vertical frame D3 is connected with a first vertical sliding seat D4 in a lifting and sliding manner. A plurality of groups of suction cup assemblies D5 capable of grasping and transferring the rice bags in the rice bag conveying mechanism to the cartons in the carton conveying mechanism are connected to the first vertical sliding seat D4. Taking four groups as an example in the figure, the first horizontal sliding seat D2 can slide along the Y direction shown in the figure, and the first vertical sliding seat D4 can slide along the Z direction shown in the figure.

[0054] On the first rack D1, there are second synchronous pulleys D23 arranged in parallel at intervals. A second synchronous belt D24 is connected between the two second synchronous pulleys D23. One of the two second synchronous pulleys D24 is directly or indirectly driven (driven by a motor through a speed reducer or a pulley mechanism) by a second synchronous belt motor D25 to rotate. A first horizontal slide D2 is fixedly connected to the second synchronous belt. Through the action of the second synchronous belt motor D25, the first horizontal slide D2 slides along the Y direction shown in the figure (the first rack D1 has a guide rail for supporting the sliding of the first horizontal slide D2).

[0055] On the first vertical frame D3, there are third synchronous pulleys D26 arranged in parallel at intervals. A third synchronous belt D27 is connected between the two third synchronous pulleys D26. One of the two third synchronous pulleys is driven by a third synchronous belt motor D28 to rotate. A first vertical slide D4 is fixedly connected to the third synchronous belt. Through the action of the third synchronous belt motor D28, the first vertical slide D4 slides along the Z direction shown in the figure (the first vertical frame D3 has a guide rail for supporting the sliding of the first vertical slide D4).

[0056] A first seat plate D6 is fixedly connected to the above-mentioned first vertical slide D4. A first seat plate guide rail D7 is provided on the first seat plate D6. A first cross beam D8 is slidably connected to the first seat plate guide rail D7. A first horizontal telescopic cylinder D9 is provided between the first cross beam D8 and the first seat plate D6 to drive the horizontal movement of the first cross beam D8 (the X direction shown in the figure, and the transfer of the rice bag and the carton in the X direction is realized by the movement of the first cross beam D8 in the X direction). A number of groups of rotating shafts D10 (taking 4 groups as an example in the figure) are rotatably connected to the first cross beam D8. The lower end of the rotating shaft is connected with the above-mentioned suction cup assembly D5. The negative pressure pipeline of the suction cup assembly is connected in series with a solenoid valve D11 located on the first cross beam to control the suction and release of the suction cup D12.

[0057] Specifically, four rotating shafts D10 are rotatably connected to the bottom surface of the first cross beam D8. The upper ends of the rotating shafts penetrate into the first cross beam and are fixedly connected with first synchronous pulleys D13. A first synchronous belt motor D14 is fixedly connected to the middle of the bottom surface of the first cross beam. The output shaft of the first synchronous belt motor D14 extends into the first cross beam and is fixedly connected with two coaxially arranged second synchronous pulleys D15. The second synchronous pulleys D15 are connected with the first synchronous pulleys D13 through a synchronous belt. The first synchronous pulleys on the two rotating shafts on the same side of the first synchronous belt motor D14 are connected through a synchronous belt. When the output shaft of the first synchronous belt motor rotates, it drives the four rotating shafts and the suction cup assembly to rotate synchronously, so as to realize the synchronous rotation of each rice bag adsorbed by the suction cup and meet the need for turning during the transfer of the rice bag.

[0058] Among them, the suction cup assembly D5 is fixed on the lower end of the cylindrical cantilever D16, and the upper end of the cylindrical cantilever D16 is fixedly connected to the lower end of the rotating shaft D10. The cylindrical cantilever is a hollow cylindrical square tube, and hollow holes D17 are provided on the side walls of the cylindrical square tube, through which the weight can be reduced.

[0059] The above-mentioned suction cup assembly D5 includes a suction cup tube D18 connected to a negative pressure pipeline (which can be a plastic hose, omitted in the figure) and a suction cup D12 integrally connected to the suction cup tube. A horizontally arranged mounting plate D19 is fixedly provided at the lower part of the cylindrical cantilever. The outer periphery of the suction cup tube has an external thread and its upper part passes through the perforation on the mounting plate. The upper and lower parts of the suction cup tube passing through the mounting plate are locked by nuts D20. Multiple suction cup tubes D18 and suction cups D12 can be installed through the mounting plate D19 and multiple perforations thereon, and the locking by nuts D20 is stable and reliable.

[0060] Two first support plates D21 are arranged at intervals on the above-mentioned first seat plate D6, and the cylinder body of the first horizontal telescopic cylinder D9 is fixedly arranged between the two first support plates D21. The free end of the telescopic rod of the first horizontal telescopic cylinder D9 is fixedly connected to the second support plate D22 on the first cross beam D8. Through the action of the first horizontal telescopic cylinder D9, the first cross beam D8 can move relative to the first seat plate in the X direction.

[0061] Among them, the carton conveying mechanism B includes a carton first conveyor belt B1, a carton second conveyor belt B2, and a carton third conveyor belt B23 arranged adjacent to each other. A hollow channel B3 is provided between the carton first conveyor belt and the carton second conveyor belt for arranging a set of first chain conveying mechanisms B4. A hollow channel is provided in the middle of the carton third conveyor belt for arranging a second chain conveying mechanism B24. Both the first chain conveying mechanism B4 and the second chain conveying mechanism B24 include a driving sprocket B5, a driven sprocket B6, and a chain B7 wound around the driving sprocket and the driven sprocket. The driving sprocket B5 of the first chain conveying mechanism is close to the output end of the second conveyor belt B2, and the driven sprocket B6 of the first chain conveying mechanism is close to the input end of the first conveyor belt B1. The driving sprocket and the driven sprocket of the second chain conveying mechanism are respectively arranged at the output end and the input end of the carton third conveyor belt. Carton push plates B8 are fixedly arranged at intervals on the chain; through the operation of the chain (the driving sprocket B5 driven by a motor drives the chain to work), the carton push plates B8 push the cartons forward.

[0062] During operation, each carton is sequentially conveyed from the first conveyor belt to the second conveyor belt through the first chain conveying mechanism and the carton pusher plate thereon. When a certain number of cartons (taking four cartons as an example in this application) are gathered on the second conveyor belt, the first chain conveying mechanism, the second conveyor belt, the third conveyor belt, and the second chain conveying mechanism and the carton pusher plate thereon act synchronously (equivalent to using the second conveyor belt as a buffer zone for collecting multiple cartons. After a certain number of cartons are collected on the second conveyor belt, they are uniformly conveyed into the third conveyor belt, and the third conveyor belt serves as the carton loading station for rice bags), enabling the cartons located on the second conveyor belt to enter the third conveyor belt uniformly, greatly saving the efficiency of the existing method that requires waiting for all cartons to reach the third conveyor belt one by one before starting the manipulator (the rice bag lifting and moving mechanism D in this application) to perform the rice bag loading work.

[0063] For reasonable design, conveyor belt driving shafts B9 and conveyor belt driven shafts B10 are provided on the above-mentioned first carton conveyor belt, second carton conveyor belt, and third carton conveyor belt. One end of the conveyor belt driving shaft extends and is fixedly connected with a conveyor belt driving sprocket B11, and the conveyor belt driving sprocket B11 is connected to the sprocket on the motor output shaft through a chain; the rotating shaft of the driving sprocket B5 extends and is fixedly connected with a carton conveying mechanism synchronous pulley B12, and the carton conveying mechanism synchronous pulley B12 is connected to the synchronous pulley B25 on the motor output shaft through a synchronous belt.

[0064] To adapt to different cartons, a carton fixed guardrail B13 is provided on the upper first side of the above-mentioned first conveyor belt and second carton conveyor belt, and a telescopic carton guardrail B14 is provided on the upper second side of the first conveyor belt and second carton conveyor belt, so as to facilitate adjusting the distance between the two guardrails to adapt to the carton size. The telescopic carton guardrail B14 can be driven to expand and contract by a cylinder, an electric push rod, etc. The following is the specific structure of the telescopic carton guardrail B14 in this application.

[0065] The first end of the telescopic carton guardrail B14 is rotatably connected to the carton conveyor belt frame B16 through a vertical rod B15, and the second end of the telescopic carton guardrail B14 is provided with a guardrail adjusting mechanism B17; the guardrail adjusting mechanism B17 includes a first stepping motor B18 provided on the carton conveyor belt frame and a carton guardrail adjusting screw B19 driven by the first stepping motor to work. A carton guardrail support rod mounting seat B20 is threadedly connected to the carton guardrail adjusting screw B19. A carton guardrail support rod B21 is provided on the carton guardrail support rod mounting seat, and the carton guardrail support rod B21 is connected to the second end of the telescopic carton guardrail. When the first stepping motor B18 works, it drives the carton guardrail adjusting screw B19 to rotate, and then drives the carton guardrail support rod mounting seat B20, the carton guardrail support rod B21, and the second end of the telescopic carton guardrail B14 to move (in the Y direction shown in the figure), realizing the limitation of the side of the carton.

[0066] To ensure the stable and reliable movement of the installation base B20 of the carton guardrail support rod, etc., a carton guardrail adjustment guide rod B22 is installed on the above-mentioned carton conveyor belt frame B16, and the installation base B20 of the carton guardrail support rod is slidably connected to the carton guardrail adjustment guide rod B22.

[0067] Among them, the rice bag conveying mechanism A includes multiple groups of rice bag conveyor belts A1 that are arranged close to each other in sequence and operate independently. On both sides above the rice bag conveyor belts, a fixed rice bag guardrail A2 and a telescopic rice bag guardrail A3 are respectively provided to facilitate adjusting the distance between the two guardrails to adapt to the size of the rice bag.

[0068] Both ends of the telescopic rice bag guardrail A3 are respectively connected to two groups of rice bag guardrail adjusting mechanisms A4. Among them, the rice bag guardrail adjusting mechanism A4 includes a rice bag guardrail adjusting screw A6 provided on the rice bag conveyor belt frame A5 and a rice bag guardrail support rod installation base A7 that is threadedly connected to the rice bag guardrail adjusting screw. A rice bag guardrail support rod A8 is provided on the rice bag guardrail support rod installation base A7. The rice bag guardrail support rod A8 is connected to both ends of the telescopic rice bag guardrail. A guardrail adjusting synchronous pulley A9 is provided at the end of the rice bag guardrail adjusting screw A6. A synchronous belt is wound between the two guardrail adjusting synchronous pulleys. One of the rice bag guardrail adjusting screws is driven by a second stepping motor A10. A rice bag guardrail adjusting guide rod A11 is installed on the rice bag conveyor belt frame A5. The rice bag guardrail support rod installation base A7 is slidably connected to the rice bag guardrail adjusting guide rod A11. When the second stepping motor A10 works, the two rice bag guardrail adjusting screws A6 rotate synchronously through the synchronous belt and the guardrail adjusting synchronous pulley A9, and then drive the rice bag guardrail support rod installation base A7, the rice bag guardrail support rod A8, and both ends of the telescopic rice bag guardrail A to move synchronously along the Y direction shown in the figure, so as to adjust to the needs of different rice bag sizes.

[0069] The above are only the preferred embodiments of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the present invention.

Claims

1. A carton inlet and outlet mechanism, characterized in that: It includes a first carton conveyor belt, a second carton conveyor belt, and a third carton conveyor belt that are adjacently arranged. There is a hollow channel provided between the first carton conveyor belt and the second carton conveyor belt for arranging a first chain conveyor mechanism. There is a hollow channel provided in the middle of the third carton conveyor belt for arranging a second chain conveyor mechanism. Both the first chain conveyor mechanism and the second chain conveyor mechanism include a driving sprocket, a driven sprocket, and a chain wound around the driving sprocket and the driven sprocket. Carton push plates are fixedly arranged at intervals on the chain. The driving sprocket of the first chain conveyor mechanism is arranged at a position close to the output end of the second conveyor belt, and the driven sprocket is at a position close to the input end of the first conveyor belt. The driving sprocket and the driven sprocket of the second chain conveyor mechanism are respectively arranged at the output end and the input end of the third carton conveyor belt.

2. The carton inlet and outlet mechanism according to claim 1, wherein: Conveyor belt driving shafts and conveyor belt driven shafts are provided on each of the first carton conveyor belt, the second carton conveyor belt, and the third carton conveyor belt. One end of the conveyor belt driving shaft extends out and is fixedly connected to a conveyor belt driving sprocket, and the conveyor belt driving sprocket is connected to the sprocket of the motor output shaft through a chain.

3. The carton inlet and outlet mechanism according to claim 2, wherein: The rotating shaft of the driving sprocket extends out and is fixedly connected to a synchronous pulley of the carton conveying mechanism, and the synchronous pulley of the carton conveying mechanism is connected to the synchronous pulley of the motor output shaft through a synchronous belt.

4. The carton inlet and outlet mechanism according to claim 3, wherein: On the first side above the first conveyor belt and the second carton conveyor belt, there is a carton fixing guardrail. On the second side above the first conveyor belt and the second carton conveyor belt, there is a telescopic carton guardrail to facilitate adjusting the distance between the two guardrails to adapt to the carton size.

5. The carton inlet and outlet mechanism according to claim 4, characterized in that: The first end of the telescopic carton guardrail is rotatably connected to the carton conveyor belt frame through a vertical rod, and the second end of the telescopic carton guardrail is provided with a guardrail adjusting mechanism.

6. The carton inlet and outlet mechanism according to claim 5, wherein: The guardrail adjusting mechanism includes a first stepping motor arranged on the carton conveyor belt frame and a carton guardrail adjusting screw rod driven by the first stepping motor. A carton guardrail support rod mounting seat is threadedly connected to the carton guardrail adjusting screw rod. A carton guardrail support rod is provided on the carton guardrail support rod mounting seat, and the carton guardrail support rod is connected to the second end of the telescopic carton guardrail.

7. The carton inlet and outlet mechanism according to claim 6, characterized in that: A carton guardrail adjusting guide rod is installed on the carton conveyor belt frame, and the carton guardrail support rod mounting seat is slidably connected to the carton guardrail adjusting guide rod.

8. The carton inlet and outlet mechanism according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: Above the third carton conveyor belt, there are two groups of guide box guardrail plates arranged in parallel at intervals. A plurality of windows are opened on the guide box guardrail plates. Swingable stop box plates are rotatably hinged in the plurality of windows. Each stop box plate is fixedly connected to a turning arm, and each turning arm is hinged to a turning push rod. The turning push rod is connected to the free end of the telescopic rod of a stop box telescopic cylinder, and the cylinder body of the stop box telescopic cylinder is connected to the guide box guardrail plate.

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