Automatic packaging box production line

Abstract

An automatic packaging box production line comprises a production line body, the production line body is composed of a die-cutting machine, a box pasting machine, a window patching machine, a transportation and storage device, a control system and a detection system, and the transportation and storage device is composed of a conveying device, a steering device and a middle storage device. The middle storage device comprises a support, an inclined plate, a containing box, a motor, a first transmission mechanism, a lead screw, a fixing block, a lifting platform, an infrared sensor, a grating sensor, a vacuum adsorption device and a conveying wheel, the containing box is arranged at the top end of the support, the motor is arranged in the middle of the inner top of the containing box, and the vacuum adsorption device is arranged at the bottom of the containing box; a plurality of conveying wheels are arranged on one side of the bottom of the containing box at equal intervals, a plurality of infrared sensors are evenly arranged on the top of a bottom plate of the support, and a grating sensor is vertically arranged on the support. And through the arrangement of the middle storage device, the flexibility of the production line can be effectively improved, the effect of assisting in adjusting the takt of the production line is achieved, and the production stability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging industry, in particular to an automatic packaging box production line. Background Art

[0002] With the rapid development of the packaging industry, product packaging is no longer a process that is completed by a single machine and has extremely low production efficiency. Instead, it is replaced by: packaging lines and automatic packaging lines. The so-called packaging line is to combine independent automatic or semi-automatic packaging equipment, auxiliary equipment, etc. in the order of packaging process, so that the packaged items enter from one end of the line, pass through different packaging equipment, and the packaging materials are added at the corresponding packaging station. The packaged products are continuously output from the end of the line. In the packaging line, workers only participate in some auxiliary packaging operations, such as sorting, conveying, and packaging container supply. The existing multi-type packaging production lines are rigid or semi-flexible production lines. When the machine stops, it is impossible to continue to maintain production.

[0003] At present, a Chinese patent with authorization announcement number CN217532038U discloses a conveying mechanism, including a conveying frame, a supporting leg fixedly connected to the lower end of the conveying frame, a conveying structure arranged inside the conveying frame, and a straightening structure arranged at the upper ends of both sides of the conveying frame; the straightening structure, the straightening structure is fixedly connected to the upper end of the mounting seat, the mounting seat is fixedly connected to both sides of the conveying frame, the straightening structure includes a baffle, the baffle is fixedly connected to the front end of the adjustment structure, and the adjustment structure is fixedly connected to the mounting seat. The beneficial effect is: the utility model can straighten the offset packaging box by arranging the straightening structure to ensure the conveying effect, and an adjustment structure is arranged in the straightening structure, and the spacing between the front end baffles can be adjusted through the adjustment structure, so as to adapt to the straightening of packaging boxes of different specifications, thereby increasing the use effect and convenience.

[0004] The above-mentioned prior art solution has the following defects: there is no intermediate storage mechanism between the two mechanisms. When the efficiency of one of the machines is higher, the efficiency has to be reduced to adapt to the rhythm of the entire production line. When one of the machines fails, the entire production line needs to be shut down and wait for maintenance, which is not conducive to production. Utility Model Content

[0005] The purpose of the utility model is to provide an automated packaging box production line to solve the problems existing in the above-mentioned prior art.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] An automated packaging box production line, comprising a production line body, wherein the production line body is composed of a die-cutting machine, a box-gluing machine, a window-pasting machine, a transport and storage device, a control system and a detection system;

[0008] The transport storage device is composed of a conveying device, a steering device and an intermediate storage device;

[0009] The intermediate storage device includes a bracket, an inclined plate, a containing box, a motor, a first transmission mechanism, a screw rod, a fixing block, a lifting platform, an infrared sensor, a grating sensor, a vacuum adsorption device and a transmission wheel;

[0010] The support is provided with an inclined plate at one side, and the inclined plate is used to guide the packaging box to slide onto the lifting platform. A containing box is provided at the top of the support, and a motor is provided at the middle position of the inner top of the containing box. A first transmission mechanism is provided at the inner top of the containing box, and the first transmission mechanism is provided at the periphery of the motor. The first transmission mechanism is connected with a plurality of screw rods, and the plurality of screw rods are symmetrically arranged at both ends of the containing box. A plurality of fixed blocks are provided at the periphery of the top of the lifting platform, and a plurality of fixed blocks corresponding to the top are symmetrically arranged at the bottom of the lifting platform, and a threaded hole is provided on the side of the fixed block away from the lifting platform, and screw rods are provided in the threaded holes, and every two adjacent fixed blocks are bolted and fixed, and a vacuum adsorption device is provided at the bottom of the containing box, and a plurality of conveying wheels are evenly arranged on one side of the bottom of the containing box, a plurality of infrared sensors are evenly arranged on the top of the bottom plate of the support, and a grating sensor is vertically arranged on the support.

[0011] By adopting the above technical solution, the rhythm of the production line can be coordinated. The output per minute of different machines is inconsistent. For example, the folder gluing machine may be faster, while the die-cutting machine may be slower. At this time, if the power of the faster machine is reduced, it will undoubtedly cause waste. Therefore, an intermediate storage device can be set between different machines as a supplement to balance the rhythm. At the same time, the intermediate storage device can also improve production flexibility. When one of the machines fails, the products trapped in the intermediate storage device can flow into the machine of the next process like a flood. At this time, the extra time can be used to repair the failed machine. At the same time, the production line can be kept moving, which improves the utilization efficiency of production capacity. The lifting platform can be used to store products, and the lifting platform can also determine the height of the stored products according to the grating sensor, and move up and down through the motor to store a certain amount of products.

[0012] In a further embodiment, a threaded hole is provided at one end of the fixing block, a reinforcing block is provided at a middle position of the top of the fixing block, and the bottom of the reinforcing block is fixedly connected to the top of the fixing block.

[0013] By adopting the above technical solution, the fixed block is like a splint, clamping the lifting platform in the middle, and the strength of the fixed block itself is very important. If no reinforcing block is provided, the gap between the threaded hole and the clamping side of the lifting platform will be under more pressure, which is not conducive to the long-term use of the fixed block. By providing a reinforcing block, the strength of the fixed block can be effectively enhanced, and the lifting platform can be limited more effectively, thereby effectively improving the service life of the fixed block.

[0014] In a further embodiment, the vacuum adsorption device includes a shell, a vacuum suction cup, a vacuum emitter, a solenoid valve, an air pump and a telescopic rod, wherein a plurality of the telescopic rods are arranged at equal intervals, a receiving block is detachably mounted on one end of the telescopic rod, a vacuum suction cup is detachably mounted on the bottom of the receiving block, a suction nozzle of the vacuum suction cup is arranged downward, a solenoid valve is arranged on the telescopic rod, the solenoid valve is used to control the switch of the vacuum emitter, and an air pump is arranged on one side of the bottom of the receiving box, and the air pump is used to drive multiple telescopic rods.

[0015] By adopting the above technical solution, the vacuum adsorption device can lift the packaging box and transport it forward to the conveying wheel, and then transport it to the machine of the next process through the conveying wheel. The vacuum adsorption device mainly plays a role in separating the stacked packaging boxes to prevent the conveying wheel from moving the packaging boxes on the second layer due to friction and other reasons when moving the top packaging box, thereby affecting the subsequent processing accuracy.

[0016] In a further embodiment, the telescopic rod includes a control valve, a fixed cylinder, a traction roller, a traction wire rope, a first telescopic cylinder, a second telescopic cylinder and a third telescopic cylinder. A transmission device is arranged in the middle position of the bottom of the fixed cylinder, and the transmission device is fixedly connected to the fixed cylinder. The transmission device includes a shell, a control valve and a traction roller. A control valve is bonded to the bottom of the shell, and a traction roller is detachably arranged inside the shell. The control valve and the traction tube are electrically connected through an electric wire, one end of the control valve is connected to the air outlet of the air pump through an air pipe, and the other end of the control valve is connected to the transmission device through the air pipe. The diameter of the first telescopic cylinder is slightly larger than that of the second telescopic cylinder, and a first return limit sleeve is arranged at one end of the first telescopic cylinder close to the second telescopic cylinder, and a second return limit sleeve is arranged at one end of the second telescopic cylinder close to the third telescopic cylinder, and a accommodating block is arranged at the fixed top of the third telescopic cylinder.

[0017] By adopting the above technical solution, the telescopic rod can quickly complete reciprocating motion while maintaining a certain accuracy. Multiple telescopic rods can be driven simultaneously by one air pump, which is economical and affordable. At the same time, it also ensures that the vacuum adsorption device will not deviate in direction and angle when adsorbing the packaging box to the conveying wheel position.

[0018] In a further embodiment, the bracket is composed of a base plate, a first support rod, a second support rod, a third support rod, a fourth support rod, a bottom cross beam and a shock-absorbing foot. The first support rod and the third support rod are obliquely arranged, the second support rod and the fourth support rod are obliquely arranged, and the bottom cross beam and the shock-absorbing foot are each provided with multiple.

[0019] By adopting the above technical solution, during the operation of the intermediate storage device, certain vibrations are inevitably generated. In order to reduce the noise, four shock-absorbing pads need to be set between the bracket and the ground to reduce the impact of the vibration on the sensor, reduce the noise, and improve the processing environment.

[0020] In a further embodiment, the grating sensor includes a grating emitting device and a grating receiving device, the grating emitting device is vertically arranged on the side of the first support rod facing the lifting platform, and the grating receiving device is vertically arranged on the side of the third support rod facing the lifting platform, and the grating sensor is used to detect the position of the lifting platform and the height of the packaging box on the top of the lifting platform.

[0021] By adopting the above technical solution, the grating sensor can clearly detect how high the product packaging boxes are stacked on the lifting platform. When the packaging boxes on the lifting platform are stacked to a certain height, the grating sensor will cooperate with the transmission mechanism to make the lifting platform rise or fall, ensuring that the height of the top of the packaging box can be just sucked up by the vacuum adsorption device and transported to the next process via the conveyor wheel.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. Through the setting of the motor, the lead screw and the lifting platform, the intermediate storage device can realize the storage function, and the packaging box products are stored on the lifting platform. Regardless of the storage volume of the packaging box products on the lifting platform, it is always ensured that the vacuum adsorption device and the conveying wheel can transport the packaging box products to the next process, and alleviate the beat difference caused by the different processing efficiency between the two machines. When one of the machines fails, the packaging box products stored in the intermediate storage device can be used to enable the normal production line to continue production and operation, thereby improving the flexibility of the production line;

[0024] 2. Through the setting of grating sensors and infrared sensors, the height of the lifting platform and the height of the packaging products piled on the lifting platform can be detected and mastered in real time. The peripheral side walls of the lifting platform are provided with a reflective coating, which can cooperate with the grating sensor to make it easier for the grating sensor to grasp the position of the platform. The height of the packaging products piled on the lifting platform is measured by the grating sensor, and the corresponding information is provided to the control module, which determines the lifting of the platform. The infrared sensor on the top of the bracket bottom plate is responsible for detecting the distance the lifting platform descends, and cooperates with the grating sensor to enhance the detection accuracy;

[0025] 3. Through the setting of the telescopic rod and the air pump, the packaging box product can be adsorbed and transported to the next location through the cooperation of the telescopic rod and the vacuum adsorption device, and the telescopic rod can be released and retracted. The telescopic rod has a simple structure and reliable operation. The telescopic movement of the telescopic rod can be realized by using the principle of gas mechanics, which effectively improves the response speed and reduces the probability of device failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an automated packaging box production line of the utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of an intermediate storage device in an automated packaging box production line of the utility model;

[0028] Figure 3 This is a schematic diagram for reflecting the positional relationship between the telescopic rod and the bracket in an automated packaging box production line of the utility model;

[0029] Figure 4 The utility model is a structural schematic diagram for reflecting a telescopic rod in an automated packaging box production line.

[0030] In the figure, 1. production line body; 2. die-cutting machine; 3. box-gluing machine; 4. window-pasting machine; 5. transport and storage device; 51. conveying device; 52. steering device; 53. intermediate storage device; 6. control system; 7. detection system; 8. bracket; 9. tilting plate; 10. accommodating box; 11. motor; 12. first transmission mechanism; 13. screw rod; 14. fixing block; 15. lifting platform; 16. infrared sensor; 17. grating sensor; 171. grating transmitting device; 172. grating receiving device; 18. vacuum adsorption device; 19. transmission wheel; 20. control valve; 21. fixing cylinder; 22. traction roller; 23. traction wire rope; 24. first telescopic cylinder; 25. second telescopic cylinder; 26. third telescopic cylinder. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0032] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1In the description of this specification, the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from a particular component geometry, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this specification, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] Example:

[0034] like Figure 1-4 As shown, an automated packaging box production line includes a production line body 1, which is composed of a die-cutting machine 2, a box-gluing machine 3, a window-pasting machine 4, a transportation and storage device 5, a control system 6 and a detection system 7. The transportation and storage device 5 is composed of a conveying device 51, a steering device 52 and an intermediate storage device 53. The intermediate storage device 53 includes a bracket 8, an inclined plate 9, a receiving box 10, a motor 11, a first transmission mechanism 12, a screw rod 13, a fixing block 14, a lifting platform 15, an infrared sensor 16, a grating sensor 17, a vacuum adsorption device 18 and a conveying wheel 19. An inclined plate 9 is provided on one side of the bracket 8, and the inclined plate 9 is used to guide the packaging box to slide onto the lifting platform 15. A receiving box 10 is provided on the top of the bracket 8, and a motor 11 is provided at the middle position of the inner top of the receiving box 10. A first transmission mechanism 12 is provided on the inner top of the receiving box 10, and the first transmission mechanism 12 is provided on the periphery of the motor 11. The first transmission mechanism 12 is connected to a plurality of screw rods 13, and the plurality of screw rods 13 are connected to the first transmission mechanism 12. The screw rods 13 are symmetrically arranged at the two ends of the accommodating box 10, and a plurality of fixed blocks 14 are arranged on the top periphery of the lifting platform 15. The bottom of the lifting platform 15 is symmetrically provided with fixed blocks 14 corresponding to the top one by one. The fixed blocks 14 are provided with threaded holes on the side away from the lifting platform 15, and one end of the fixed block 14 is provided with a threaded hole. A reinforcing block is arranged in the middle position of the top of the fixed block 14, and the bottom of the reinforcing block is fixedly connected to the top of the fixed block 14. The fixed block 14 can clamp the lifting platform 15 and provide an up and down lifting force. The significance of the up and down movement of the lifting platform 15 is to ensure that the top of the packaging box stored on the lifting platform 15 is always in contact with the conveying wheel 19, the vacuum adsorption device 18, etc., to ensure that the intermediate transportation device can play a storage role, thereby providing sufficient flexibility to the production line, balancing the beats between different machines, and when some machines fail to work, the production line can still be kept operating for a period of time, thereby improving the stability of production.

[0035] like Figure 1-4As shown, screw rods 13 are provided in the threaded holes, and every two adjacent fixing blocks 14 are bolted and fixed. A vacuum adsorption device 18 is provided at the bottom of the accommodating box 10, and a plurality of transmission wheels 19 are evenly spaced on one side of the bottom of the accommodating box 10. A plurality of infrared sensors 16 are evenly provided on the top of the bottom plate of the bracket 8, and a grating sensor 17 is vertically provided on the bracket 8. The bracket 8 is composed of a bottom plate, a first support rod, a second support rod, a third support rod, a fourth support rod, a bottom crossbeam and a shock-absorbing foot. The first support rod and the third support rod are obliquely arranged, the second support rod and the fourth support rod are obliquely arranged, and a plurality of bottom crossbeams and shock-absorbing feet are provided. The grating sensor 17 includes a grating transmitting device 171 and a grating receiving device 172. The first support rod faces vertically toward one side of the lifting platform 15. A grating transmitting device 171 is vertically arranged, and a grating receiving device 172 is vertically arranged on the side of the third support rod facing the lifting platform 15. The grating sensor 17 is used to detect the position of the lifting platform 15 and the height of the packaging box on the top of the lifting platform 15. The vacuum adsorption device is used to suck up a single packaging box and deliver it forward, and the conveying wheel 19 is used to provide a forward force to the packaging box so that the packaging box goes to the next process. The grating sensor 17 is diagonally arranged on the inner side of the two support rods, which can detect how many packaging boxes are piled up on the lifting platform 15, and cooperates with the motor 11. When the packaging boxes on the lifting platform 15 continue to decrease and decrease to a certain height, the motor 11 will lift the lifting platform 15 upward through the transmission mechanism such as the screw rod 13 after each delivery.

[0036] like Figure 1-4As shown, the vacuum adsorption device 18 includes a shell, a vacuum suction cup, a vacuum emitter, a solenoid valve, an air pump and a telescopic rod. A plurality of telescopic rods are arranged at equal intervals. A accommodating block is detachably installed at one end of the telescopic rod. A vacuum suction cup is detachably installed at the bottom of the accommodating block. The suction nozzle of the vacuum suction cup is arranged downward. A solenoid valve is arranged on the telescopic rod. The solenoid valve is used to control the switch of the vacuum emitter. An air pump is arranged on one side of the bottom of the accommodating box 10. The air pump is used to drive multiple telescopic rods. The telescopic rod includes a control valve 20, a fixed cylinder 21, a traction roller 22, a traction wire rope 23, a first telescopic cylinder 24, a second telescopic cylinder 25 and a third telescopic cylinder 26. A transmission device is arranged at the middle position of the bottom of the fixed cylinder 21. The transmission device is fixedly connected to the fixed cylinder 21. The transmission device includes a shell, a control valve 20 and a traction roller 22. The control valve 20 is bonded to the bottom of the shell. The traction roller 22 is detachable inside the shell. The control valve 20 and the traction pipe are connected by The wires are electrically connected, one end of the control valve 20 is connected to the air outlet of the air pump through the air pipe, and the other end of the control valve 20 is connected to the transmission device through the air pipe. The diameter of the first telescopic cylinder 24 is slightly larger than that of the second telescopic cylinder 25. The end of the first telescopic cylinder 24 close to the second telescopic cylinder 25 is provided with a first return limit sleeve, and the end of the second telescopic cylinder 25 close to the third telescopic cylinder 26 is provided with a second return limit sleeve. The third telescopic cylinder 26 is provided with a accommodating block at the top. The telescopic rod is mainly extended and contracted by the air pump, and the movement of the telescopic rod is controlled by the control valve 20. In this way, it cooperates with the vacuum suction device 18 on the accommodating block to repeatedly complete the actions of sucking, feeding and placing paper. Through the vacuum suction cup and the vacuum generator, the vacuum suction device 18 can firmly grasp the lightweight packaging box and transport it to the next designated position and then release it. The whole process is rapid and effective, and there are few accidents, with high stability.

[0037] Specific implementation process: On the packaging box production line, an intermediate storage device 53 will be set between different machines, such as the die-cutting machine 2 and the window-pasting machine 4. This is because different machines take different times to complete a packaging box, and the average completion volume per hour is also different. This process will lead to accumulation. Every time a different packaging box is changed, the production line rhythm needs to be debugged, and uneven production will occur during the debugging process. The intermediate storage device 53 can use the tilting plate 9 to make the packaging box fall obliquely on the lifting platform 15. During the falling process, the packaging box has multiple support rods to limit its position to ensure that it does not fly out horizontally. After being accumulated on the lifting platform 15, the grating sensor 17 will detect the specific height of the packaging box accumulation. At the same time, a reflective coating is also attached to one side of the lifting platform 15, so that the grating sensor 17 can accurately grasp the lifting height. The infrared sensor 16 on the bottom plate of the bracket 8 will assist in detecting the height of the lifting platform 15, and determine whether the position of the lifting platform 15 is raised or lowered according to the height. If the lifting platform 15 is too high, the packaging boxes will not be enough to be stacked on the lifting platform 15, but will leak onto the production line and the ground. On the contrary, if the lifting platform 15 is too low, the packaging boxes cannot be contacted by the vacuum adsorption device 18 and the transmission wheel 19, and cannot be transferred to the next process. When the intermediate storage device 53 is full, the operating speed of the production line has been debugged. At this time, if a machine upstream of the production line stops operating, the intermediate storage device 53 can also input the packaging boxes pre-stored on the lifting platform 15 into the downstream machine, so that the production line as a whole has sufficient flexibility to ensure production efficiency.

[0038] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An automated packaging box production line, comprising a production line body (1), characterized in that: The production line body (1) is composed of a die-cutting machine (2), a box-gluing machine (3), a window-pasting machine (4), a transport and storage device (5), a control system (6) and a detection system (7); The transport storage device (5) is composed of a conveying device (51), a diverting device (52) and an intermediate storage device (53); The intermediate storage device (53) comprises a bracket (8), an inclined plate (9), a containing box (10), a motor (11), a first transmission mechanism (12), a screw rod (13), a fixing block (14), a lifting platform (15), an infrared sensor (16), a grating sensor (17), a vacuum adsorption device (18) and a transmission wheel (19); An inclined plate (9) is provided on one side of the bracket (8), and the inclined plate (9) is used to guide the packaging box to slide onto the lifting platform (15). A accommodating box (10) is provided at the top of the bracket (8), and a motor (11) is provided at the middle position of the inner top of the accommodating box (10). A first transmission mechanism (12) is provided at the inner top of the accommodating box (10), and the first transmission mechanism (12) is arranged on the periphery of the motor (11). The first transmission mechanism (12) is connected to a plurality of screw rods (13), and the plurality of screw rods (13) are symmetrically arranged at both ends of the accommodating box (10). A plurality of fixed screw rods (13) are provided on the periphery of the top of the lifting platform (15). A fixed block (14), the bottom of the lifting platform (15) is symmetrically provided with fixed blocks (14) corresponding to the top, the fixed blocks (14) are provided with threaded holes on the side away from the lifting platform (15), and screw rods (13) are provided in the threaded holes. Every two adjacent fixed blocks (14) are bolted and fixed, the bottom of the accommodating box (10) is provided with a vacuum adsorption device (18), and one side of the bottom of the accommodating box (10) is evenly spaced with a plurality of transmission wheels (19), the top of the bottom plate of the bracket (8) is evenly provided with a plurality of infrared sensors (16), and a grating sensor (17) is vertically provided on the bracket (8).

2. The automated packaging box production line according to claim 1, characterized in that: A threaded hole is provided at one end of the fixing block (14), a reinforcing block is provided at the middle position of the top of the fixing block (14), and the bottom of the reinforcing block is fixedly connected to the top of the fixing block (14).

3. The automated packaging box production line according to claim 1, characterized in that: The vacuum adsorption device (18) comprises a shell, a vacuum suction cup, a vacuum emitter, a solenoid valve, an air pump and a telescopic rod, wherein a plurality of the telescopic rods are arranged at equal intervals, a receiving block is detachably mounted on one end of the telescopic rod, a vacuum suction cup is detachably mounted on the bottom of the receiving block, a suction nozzle of the vacuum suction cup is arranged downward, a solenoid valve is arranged on the telescopic rod, and the solenoid valve is used to control the switch of the vacuum emitter, and an air pump is arranged on one side of the bottom of the receiving box (10), and the air pump is used to drive the plurality of telescopic rods.

4. The automated packaging box production line according to claim 3, characterized in that: The telescopic rod comprises a control valve (20), a fixed cylinder (21), a traction roller (22), a traction wire rope (23), a first telescopic cylinder (24), a second telescopic cylinder (25) and a third telescopic cylinder (26); a transmission device is arranged at a middle position at the bottom of the fixed cylinder (21); the transmission device is fixedly connected to the fixed cylinder (21); the transmission device comprises a shell, a control valve (20) and a traction roller (22); the control valve (20) is bonded to the bottom of the shell; the traction roller (22) is detachably arranged inside the shell; the control valve (20) is ) and the traction tube are electrically connected by electric wires, one end of the control valve (20) is connected to the air outlet of the air pump through an air supply pipe, and the other end of the control valve (20) is connected to the transmission device through the air supply pipe. The diameter of the first telescopic cylinder (24) is slightly larger than that of the second telescopic cylinder (25). A first return limit sleeve is arranged at one end of the first telescopic cylinder (24) close to the second telescopic cylinder (25), and a second return limit sleeve is arranged at one end of the second telescopic cylinder (25) close to the third telescopic cylinder (26). A accommodating block is arranged at the fixed top of the third telescopic cylinder (26).

5. The automated packaging box production line according to claim 1, characterized in that: The bracket (8) is composed of a bottom plate, a first support rod, a second support rod, a third support rod, a fourth support rod, a bottom cross beam and a shock-absorbing support foot. The first support rod and the third support rod are arranged obliquely, the second support rod and the fourth support rod are arranged obliquely, and the bottom cross beam and the shock-absorbing support foot are both provided in plurality.

6. The automated packaging box production line according to claim 5, characterized in that: The grating sensor (17) comprises a grating transmitting device (171) and a grating receiving device (172); the grating transmitting device (171) is vertically arranged on the side of the first support rod facing the lifting platform (15); the grating receiving device (172) is vertically arranged on the side of the third support rod facing the lifting platform (15); the grating sensor (17) is used to detect the position of the lifting platform (15) and the height of the packaging box on the top of the lifting platform (15).

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