Paper box conveying device and color printing paper box packaging equipment

Abstract

The invention belongs to the technical field of paper box packaging, and discloses a paper box conveying device and color printing paper box packaging equipment. The pneumatic mechanism is arranged at the top of the paper box conveying mechanism; the grabbing assembly is arranged at one end of the pneumatic mechanism, and the other end of the grabbing assembly fixedly communicates with the pneumatic mechanism; the power assembly comprises a piston block. According to the technical scheme, the power assembly and the shielding assembly are arranged, the pneumatic mechanism operates to extract gas in the ventilation pipe, the power assembly can be smoothly driven to drive the shielding assembly to release shielding and sealing of the bottom of the ventilation pipe, and at the moment, the gas in the ventilation pipe can be extracted through the power assembly in sequence; and when air exhaust is stopped and air is exhausted outwards, the power assembly drives the shielding assembly to block the connecting position of the ventilation pipe and the grabbing suction cup, and finally the situation that external dust enters the device when the device is not used, so that blocking is caused, and follow-up operation is affected can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of paper box packaging, in particular to a paper box conveying device and color-printed paper box packaging equipment. Background Art

[0002] Color-printed carton packaging equipment is a device used to transport and package items inside cartons, and the carton conveying device is a machine used to transport cartons from one location to another. The purpose of carton packaging is achieved by conveying the stacked cartons as a whole to the top of the conveyor belt through a clamping mechanism, and placing the items into the corresponding cartons in turn through a packaging mechanism.

[0003] The existing paper box clamping and conveying device generally adopts a suction cup clamping device, but because the suction cup and the air intake duct are connected to the outside world, when the suction cup and the duct are idle as a whole, dust and impurities from the outside will enter and accumulate inside, causing blockage for a long time, which will greatly affect the subsequent suction grip of the suction cup, and it needs to be disassembled and cleaned. The operation is cumbersome and complicated, and it cannot be disassembled and cleaned in the first time, which will affect the conveying efficiency during the operation. Therefore, it needs to be improved. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a paper box conveying device and a color-printed paper box packaging device, which have the advantage of conveniently shielding and preventing dust from the suction cup pipe when it is idle.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a carton conveying device, comprising a carton conveying mechanism; a pneumatic mechanism, arranged at the top of the carton conveying mechanism; a grabbing assembly, arranged at one end of the pneumatic mechanism, and the other end of the grabbing assembly is fixedly connected to the pneumatic mechanism; a power assembly, comprising a piston block, a one-way valve flap movably installed inside the grabbing assembly, a one-way valve flap is arranged inside the piston block, a blocking plate located between the piston block and the pneumatic mechanism is arranged on the inner wall of the grabbing assembly, one end of the blocking plate close to the one-way valve flap is fixedly connected to a through pipe, and a shielding assembly located outside the one-way valve flap is arranged inside the grabbing assembly.

[0006] Preferably, the diameter of the through tube is smaller than the diameter of the one-way valve disc, and the diameter of the through tube is smaller than the diameter of the inner cavity of the piston block.

[0007] Preferably, the grabbing assembly includes a vent pipe and a grabbing suction cup;

[0008] The ventilation pipe is arranged on one side of the pneumatic mechanism, and one end of the ventilation pipe is fixedly connected with the pneumatic mechanism, and the grabbing suction cup is fixedly installed on the other end of the ventilation pipe.

[0009] Preferably, the shielding assembly comprises a triangular block, a connecting frame, a shielding block and a power spring;

[0010] The triangular block is movably installed on the outside between the blocking plate and the piston block, the connecting frame is fixedly installed on the outside of the triangular block and is slidably connected to the inner wall of the ventilation pipe, the blocking block is fixedly installed on one end of the inner side of the connecting frame, and the connecting frame is elastically connected to the inner wall of the pneumatic mechanism through a power spring.

[0011] Preferably, the inner side of the triangular block is inclined.

[0012] Preferably, a pneumatic assembly between the through pipes is arranged on the outside of the piston block, and the pneumatic assembly includes a circular hole, a first pneumatic groove and a pneumatic piston rod;

[0013] The circular hole is opened on the outside of the blocking plate, the first pneumatic groove is opened in the piston block and faces the circular hole, the pneumatic piston rod is movably installed in the inner cavity of the first pneumatic groove, and the diameter of the other end is the same as the diameter of the circular hole.

[0014] Preferably, a locking assembly located inside the first pneumatic groove is provided in the middle of the piston block, and the locking assembly includes a second pneumatic groove, a locking piston rod, a locking slot and a venting channel;

[0015] The second pneumatic groove is opened on both sides of the middle part of the piston block, the locking piston rod is movably installed in the inner cavity of the second pneumatic groove, the locking slot is opened inside the blocking plate and is located on the inner side of the one-way valve disc, and the second pneumatic groove is connected with the first pneumatic groove through the ventilation channel.

[0016] Preferably, the inner wall of the ventilation pipe is provided with a driving assembly located outside the blocking plate and the shielding block, and the driving assembly includes a driving fan blade, a mounting shaft and a transmission gear;

[0017] The driving blade is movably sleeved inside the ventilation pipe and is located on the other side of the blocking plate. The mounting shaft is movably sleeved inside the ventilation pipe and is located on the outer end of the blocking plate. The transmission gear is movably sleeved on both ends of the mounting shaft. The driving blade is meshed with the surface of the transmission gear on one side.

[0018] Preferably, the internal movable sleeve of the ventilation pipe is connected with a cleaning component located on one side of the shielding block, and the cleaning component includes a movable gear ring and a cleaning scraper strip;

[0019] The movable gear ring is movably sleeved on the inner cavity of the ventilation pipe and is located between the shielding block and the grabbing suction cup. The cleaning scraper is fixedly installed on the outer side of the inner wall of the movable gear ring. The movable gear ring is meshed with the surface of the transmission gear on the other side.

[0020] A color printing carton packaging device comprises a carton packaging device body, a carton storage rack is arranged on the top of the carton packaging device body, and the top of the carton packaging device body and one side of the bottom of the carton storage rack are connected to a carton conveying mechanism.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The above technical solution is realized by setting up a power component and a shielding component, which are operated by a pneumatic mechanism to extract the gas in the ventilation pipe, so that the power component can be smoothly driven to drive the shielding component to release the shielding seal on the bottom of the ventilation pipe. At this time, the gas will pass through the power component to extract the gas in the ventilation pipe in turn, so that the grabbing suction cup can fit the paper box for suction and clamping. When the air extraction stops and the air is exhausted to the outside, the power component will drive the shielding component as a whole to seal the connection between the ventilation pipe and the grabbing suction cup, which can ultimately prevent the entry of external dust when idle and cause blockage, affecting subsequent operations.

[0023] The present invention provides a pneumatic component and a locking component. When the piston block as a whole is fitted with the through tube to one side, the air between the piston block and the through tube will be sucked away, and then the air will continue to be sucked out at the outer end of the pneumatic component, so that the pneumatic component can smoothly drive the locking component as a whole to move the one-way valve flap and the blocking plate to fit together and then clamp and fix them. Then, one end of the through tube can push the one-way valve flap to open, and the air can be sucked through the through tube to act on one end of the ventilation tube, so that the grabbing component can stably suck and clamp the paper box.

[0024] The present invention provides a driving component and a cleaning component. The pneumatic mechanism is used to first extract the gas inside the ventilation pipe, and then the driving component can be smoothly driven to operate as a whole, so that the driving component drives the cleaning component to rotate as a whole. At this time, the inner wall of the grabbing suction cup can be scraped back and forth by one end of the cleaning component, and then the impurities and dust on the grabbing suction cup and one side of the shielding component can be smoothly hung and pushed down, thereby keeping the inner wall of the grabbing suction cup smooth and maintaining the sealing of the paper box clamped by it. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the paper box conveying mechanism of the present invention;

[0027] Figure 3 It is a schematic diagram of the side cross-sectional structure of the ventilation pipe of the present invention;

[0028] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0029] Figure 5 for Figure 3A schematic diagram of the local enlarged structure at B in the middle;

[0030] Figure 6 It is a schematic cross-sectional structural diagram of the grabbing assembly of the present invention;

[0031] Figure 7 for Figure 6 A schematic diagram of the local enlarged structure at C in the middle;

[0032] Figure 8 It is a structural schematic diagram of the power spring of the present invention;

[0033] Fig. 9 It is a bottom view structural schematic diagram of the driving assembly of the present invention.

[0034] In the figure: 1. Carton packaging device body; 2. Driving assembly; 201. Driving fan blade; 202. Mounting shaft; 203. Transmission gear; 3. Carton storage rack; 4. Carton conveying mechanism; 5. Pneumatic mechanism; 6. Grabbing assembly; 601. Ventilation pipe; 602. Grabbing suction cup; 7. Power assembly; 701. Piston block; 702. One-way valve disc; 703. Blocking plate; 704. Through pipe; 8. Shielding assembly; 801, triangular block; 802, connecting frame; 803, shielding block; 804, power spring; 9, pneumatic assembly; 901, round hole; 902, first pneumatic groove; 903, pneumatic piston rod; 10, locking assembly; 101, second pneumatic groove; 102, locking piston rod; 103, locking slot; 104, ventilation channel; 11, cleaning assembly; 1101, movable gear ring; 1102, cleaning scraper. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 9As shown, the present invention provides a carton conveying device, including a carton conveying mechanism 4; a pneumatic mechanism 5, which is arranged on the top of the carton conveying mechanism 4; a grabbing assembly 6, which is arranged at one end of the pneumatic mechanism 5, and the other end of the grabbing assembly 6 is fixedly connected to the pneumatic mechanism 5; a power assembly 7, including a piston block 701, a one-way valve flap 702 is movably installed inside the grabbing assembly 6, the one-way valve flap 702 is arranged inside the piston block 701, a blocking plate 703 located between the piston block 701 and the pneumatic mechanism 5 is arranged on the inner wall of the grabbing assembly 6, one end of the blocking plate 703 close to the one-way valve flap 702 is fixedly connected to a through pipe 704, and a shielding assembly 8 located outside the one-way valve flap 702 is arranged inside the grabbing assembly 6.

[0037] By operating the pneumatic mechanism 5 to extract the gas inside the gripping assembly 6, the gas between the piston block 701 and the blocking plate 703 can be extracted, causing the piston block 701 to slowly move closer to the blocking plate 703 until they are fully fitted together, so that the shielding assembly 8 can be fully driven to release the blockage on one end of the gripping assembly 6.

[0038] like Figure 4 and Fig. 9 As shown, the diameter of the through tube 704 is smaller than the one-way valve disc 702 , and is also smaller than the diameter of the inner cavity of the piston block 701 .

[0039] By adopting the above solution: since the diameter of the through tube 704 is smaller than the inner diameter of the piston block 701, the through tube 704 can be inserted into the piston block 701 before pushing the blocking plate 703, the gas between the piston block 701 and the blocking plate 703 can be smoothly extracted through the through tube 704, and then the one-way valve flap 702 can be smoothly pushed to flip open.

[0040] like Figure 3 and Figure 6 As shown, the grabbing assembly 6 includes a vent pipe 601 and a grabbing suction cup 602;

[0041] The ventilation pipe 601 is arranged at one side of the pneumatic mechanism 5 , and one end of the ventilation pipe is fixedly connected to the pneumatic mechanism 5 , and the grabbing suction cup 602 is fixedly installed at the other end of the ventilation pipe 601 .

[0042] With the above solution, since the grabbing suction cup 602 is made of rubber, it has a certain sealing effect, which can make it fit more tightly with the paper box.

[0043] like Figures 7 to 9 As shown, the shielding assembly 8 includes a triangular block 801, a connecting frame 802, a shielding block 803 and a power spring 804;

[0044] The triangular block 801 is movably installed on the outside between the blocking plate 703 and the piston block 701, the connecting frame 802 is fixedly installed on the outside of the triangular block 801 and is slidably connected to the inner wall of the ventilation pipe 601, the blocking block 803 is fixedly installed on one end of the inner side of the connecting frame 802, and the connecting frame 802 is elastically connected to the inner wall of the pneumatic mechanism 5 through the power spring 804.

[0045] The above scheme is adopted: by providing a power spring 804, due to the elastic force of the power spring 804, the two connecting frames 802 and the blocking block 803 can be smoothly pushed to move toward each other, so that the blocking block 803 blocks and seals the connection end of the ventilation pipe 601 and the grabbing suction cup 602, thereby preventing external dust and gas from entering when idle.

[0046] like Figure 7 As shown, the inner side of the triangular block 801 is inclined.

[0047] The above scheme is adopted: by providing a triangular block 801, when the piston block 701 moves close to the blocking plate 703, the outer side of the piston block 701 will slide along the inner inclined surface of the triangular block 801, and smoothly squeeze and push the two triangular blocks 801, the connecting frame 802 and the blocking block 803 to move in opposite directions, so that the blocking block 803 moves in opposite directions to release the blocking effect on the connecting end of the ventilation pipe 601 and the grabbing suction cup 602.

[0048] like Figure 4 As shown, a pneumatic assembly 9 between the through pipes 704 is arranged on the outside of the piston block 701, and the pneumatic assembly 9 includes a circular hole 901, a first pneumatic groove 902 and a pneumatic piston rod 903;

[0049] The circular hole 901 is opened inside and outside the blocking plate 703, the first pneumatic groove 902 is opened inside the piston block 701 and is opposite to the circular hole 901, the pneumatic piston rod 903 is movably installed in the inner cavity of the first pneumatic groove 902, and the diameter of the other end is the same as the diameter of the circular hole 901.

[0050] The above solution is adopted: by providing the pneumatic piston rod 903, when the piston block 701 and the blocking plate 703 are fitted together, the suction force can extract the gas in the inner cavity of the circular hole 901, thereby driving the pneumatic piston rod 903 to move as a whole.

[0051] like Figure 4 As shown, a locking assembly 10 located inside the first pneumatic groove 902 is disposed in the middle of the piston block 701, and the locking assembly 10 includes a second pneumatic groove 101, a locking piston rod 102, a locking slot 103 and a venting channel 104;

[0052] The second pneumatic groove 101 is opened on both sides of the middle part of the piston block 701, the locking piston rod 102 is movably installed in the inner cavity of the second pneumatic groove 101, the locking slot 103 is opened inside the blocking plate 703 and is located on the inner side of the one-way valve flap 702, and the second pneumatic groove 101 is connected to the first pneumatic groove 902 through the ventilation groove 104.

[0053] The above scheme is adopted: by providing a locking piston rod 102, when the pneumatic piston rod 903 moves to one side as a whole, the other end of the pneumatic piston rod 903 can push the gas inside the first pneumatic groove 902 through the ventilation groove 104 to enter the second pneumatic groove 101, thereby making the gas inside the second pneumatic groove 101 larger and pushing the two locking piston rods 102 towards each other, so that when the piston block 701 and the blocking plate 703 are subsequently fitted, the inner end of the locking piston rod 102 is inserted into the locking slot 103, and the piston block 701 and the blocking plate 703 are fitted and locked and fixed.

[0054] like Figure 5 and Fig. 9 As shown, the inner wall of the vent pipe 601 is provided with a driving assembly 2 located outside the blocking plate 703 and the shielding block 803, and the driving assembly 2 includes a driving blade 201, a mounting shaft 202 and a transmission gear 203;

[0055] The driving blade 201 is movably sleeved inside the ventilation pipe 601 and is located on the other side of the blocking plate 703. The mounting shaft 202 is movably sleeved inside the ventilation pipe 601 and is located on the outer end of the blocking plate 703. The transmission gear 203 is movably sleeved on both ends of the mounting shaft 202. The driving blade 201 is meshed with the surface of the transmission gear 203 on one side.

[0056] The above scheme is adopted: by providing a transmission gear 203, when the pneumatic mechanism 5 operates to absorb the internal gas of the ventilation pipe 601, the driving blade 201 can be driven to rotate by the suction force, and the surface teeth of the driving blade 201 drive the surface teeth of the transmission gear 203, so that the transmission gear 203 and the installation shaft 202 rotate as a whole.

[0057] like Fig. 9 As shown, the interior of the vent pipe 601 is movably sleeved with a cleaning assembly 11 located on one side of the shielding block 803, and the cleaning assembly 11 includes a movable gear ring 1101 and a cleaning scraper 1102;

[0058] The movable gear ring 1101 is movably sleeved in the inner cavity of the ventilation pipe 601 and is located between the shielding block 803 and the grabbing suction cup 602. The cleaning scraper 1102 is fixedly installed on the outer side of the inner wall of the movable gear ring 1101. The movable gear ring 1101 is meshed with the surface of the transmission gear 203 on the other side.

[0059] The above scheme is adopted: by providing a cleaning scraper 1102, when the transmission gear 203 rotates, the movable gear ring 1101 and the cleaning scraper 1102 can be driven to rotate as a whole, and the inside of the grabbing suction cup 602 can be scraped and cleaned by the cleaning scraper 1102, and the cleaning scraper 1102 is made of rubber, so that the grabbing suction cup 602 can be flattened at the same time when squeezing the paper box, thereby avoiding affecting the sealing between the grabbing suction cup 602 and the paper box.

[0060] A color printing carton packaging device comprises a carton packaging device body 1, a carton storage rack 3 is arranged on the top of the carton packaging device body 1, and a carton conveying mechanism 4 is arranged on the top of the carton packaging device body 1 and on one side of the bottom of the carton storage rack 3.

[0061] With the above solution, through the design of the carton storage rack 3, the cartons can be stacked at this position, and then the carton conveying mechanism 4 can be driven to drive the pneumatic mechanism 5 and the grabbing assembly 6 to convey the cartons as a whole.

[0062] The working principle and use process of the present invention:

[0063] First, the operator can start the pneumatic mechanism 5 to extract some gas to drive the driving blade 201 to rotate. At this time, the driving blade 201 and the surface of the transmission gear 203 are meshed with each other, so that the transmission gear 203 and the mounting shaft 202 can be driven to rotate as a whole. The transmission gear 203 meshed with the surface of the movable gear ring 1101 on the other side will rotate synchronously, driving the movable gear ring 1101 and the cleaning scraper 1102 to rotate as a whole. At this time, the cleaning scraper 1102 can be used to scrape and clean the inside of the grabbing suction cup 602 in advance.

[0064] Then, the paper box conveying mechanism 4 is driven to drive the pneumatic mechanism 5 and the grabbing assembly 6 to move as a whole, until one end of the grabbing suction cup 602 is completely in contact with one side of the paper boxes stacked on the top of the paper box storage rack 3. At this time, the pneumatic mechanism 5 can be driven to evacuate the air pipe 601 and then the inside of the grabbing suction cup 602, and then the gas between the piston block 701 and the blocking plate 703 will be evacuated, so that the piston block 701 and the blocking plate 703 are slowly close to each other, and then the inner inclined surface of the triangular block 801 will be squeezed and pushed, and the two triangular blocks 801, the connecting frame 802 and the blocking block 803 will be pushed to move in opposite directions as a whole, until the blocking block 803 moves in opposite directions to release the blocking effect on the connecting end of the air pipe 601 and the grabbing suction cup 602.

[0065] At the same time, when the pneumatic mechanism 5 is evacuated, the gas inside the circular hole 901 will drive the pneumatic piston rod 903 to slide on one side of the inner cavity of the circular hole 901, and the other end of the pneumatic piston rod 903 will push the gas in the inner cavity of the first pneumatic groove 902 to enter the second pneumatic groove 101 through the ventilation channel 104, so that the gas pressure in the inner cavity of the second pneumatic groove 101 increases and smoothly pushes the two locking piston rods 102 to move towards each other, so that the inner end of the locking piston rod 102 is stuck in the locking groove 1 03, the piston block 701 and the blocking plate 703 can be fixed together as a whole, and one end of the through pipe 704 will push the one-way valve flap 702 to open, so that the air suction effect of the pneumatic mechanism 5 can pass through the through pipe 704 to the position of the grabbing suction cup 602, and finally the grabbing suction cup 602 and the carton are tightly adsorbed and clamped, and then the carton conveying mechanism 4 can be driven to move the pneumatic mechanism 5 and the grabbing assembly 6 carton as a whole to drive the top of the carton packaging device body 1 to realize the conveying of the carton.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carton conveying device, characterized in that: It includes a carton conveying mechanism (4); A pneumatic mechanism (5) is arranged on the top of the carton conveying mechanism (4); A grabbing assembly (6) is arranged at one end of the pneumatic mechanism (5), and the other end of the grabbing assembly (6) is fixedly connected to the pneumatic mechanism (5); The power assembly (7) comprises a piston block (701), a one-way valve flap (702) movably mounted inside a gripping assembly (6), a one-way valve flap (702) being arranged inside the piston block (701), a blocking plate (703) located between the piston block (701) and the pneumatic mechanism (5) being arranged on the inner wall of the gripping assembly (6), one end of the blocking plate (703) close to the one-way valve flap (702) being fixedly connected to a through pipe (704), and a shielding assembly (8) located outside the one-way valve flap (702) being arranged inside the gripping assembly (6).

2. The carton conveying device according to claim 1, characterized in that: The diameter of the through tube (704) is smaller than the diameter of the one-way valve flap (702), and the diameter of the through tube (704) is smaller than the diameter of the inner cavity of the piston block (701).

3. The carton conveying device according to claim 1, characterized in that: The grabbing assembly (6) comprises a vent pipe (601) and a grabbing suction cup (602); The ventilation pipe (601) is arranged on one side of the pneumatic mechanism (5), and one end of the ventilation pipe is fixedly connected to the pneumatic mechanism (5), and the grabbing suction cup (602) is fixedly installed on the other end of the ventilation pipe (601).

4. The carton conveying device according to claim 1, characterized in that: The shielding assembly (8) comprises a triangular block (801), a connecting frame (802), a shielding block (803) and a power spring (804); The triangular block (801) is movably mounted on the outside between the blocking plate (703) and the piston block (701); the connecting frame (802) is fixedly mounted on the outside of the triangular block (801) and is slidably connected to the inner wall of the vent pipe (601); the shielding block (803) is fixedly mounted on one end of the inner side of the connecting frame (802); and the connecting frame (802) is elastically connected to the inner wall of the pneumatic mechanism (5) via a power spring (804).

5. The carton conveying device according to claim 4, characterized in that: The inner side of the triangular block (801) is in the shape of an inclined surface.

6. The carton conveying device according to claim 1, characterized in that: A pneumatic assembly (9) between the through pipes (704) is arranged on the outside of the piston block (701), and the pneumatic assembly (9) includes a circular hole (901), a first pneumatic groove (902) and a pneumatic piston rod (903); The circular hole (901) is opened inside and outside the blocking plate (703), the first pneumatic groove (902) is opened inside the piston block (701) and is directly opposite to the circular hole (901), and the pneumatic piston rod (903) is movably installed in the inner cavity of the first pneumatic groove (902), and the diameter of the other end is the same as the diameter of the circular hole (901).

7. The carton conveying device according to claim 1, characterized in that: A locking assembly (10) located inside the first pneumatic groove (902) is disposed in the middle of the piston block (701), and the locking assembly (10) includes a second pneumatic groove (101), a locking piston rod (102), a locking slot (103) and a venting channel (104); The second pneumatic groove (101) is provided on both sides of the middle part of the piston block (701); the locking piston rod (102) is movably installed in the inner cavity of the second pneumatic groove (101); the locking slot (103) is provided inside the blocking plate (703) and is located on the inner side of the one-way valve flap (702); the second pneumatic groove (101) is connected to the first pneumatic groove (902) through the ventilation channel (104).

8. The carton conveying device according to claim 3, characterized in that: The inner wall of the ventilation pipe (601) is provided with a driving assembly (2) located outside the blocking plate (703) and the shielding block (803), and the driving assembly (2) comprises a driving blade (201), a mounting shaft (202) and a transmission gear (203); The driving blade (201) is movably sleeved inside the ventilation pipe (601) and is located on the other side of the blocking plate (703); the mounting shaft (202) is movably sleeved inside the ventilation pipe (601) and is located on the outer end of the blocking plate (703); the transmission gear (203) is movably sleeved on both ends of the mounting shaft (202); and the driving blade (201) is meshed with the surface of the transmission gear (203) on one side.

9. The carton conveying device according to claim 3, characterized in that: The ventilation pipe (601) is internally and movably sleeved with a cleaning assembly (11) located on one side of the shielding block (803), wherein the cleaning assembly (11) comprises a movable toothed ring (1101) and a cleaning scraper (1102); The movable gear ring (1101) is movably sleeved in the inner cavity of the ventilation pipe (601) and is located between the blocking block (803) and the grabbing suction cup (602). The cleaning scraper (1102) is fixedly installed on the outer side of the inner wall of the movable gear ring (1101). The movable gear ring (1101) is meshed with the surface of the transmission gear (203) on the other side.

10. A color-printed paper box packaging device, characterized in that: The invention comprises a carton packaging device body (1), wherein a carton storage rack (3) is arranged at the top of the carton packaging device body (1), and the top of the carton packaging device body (1) and one side of the bottom of the carton storage rack (3) are connected to a carton conveying mechanism (4).

Images