CN213648885U

CN213648885U - Carton printing device

Info

Publication number: CN213648885U
Application number: CN202021732022.4U
Authority: CN
Inventors: 龚玉林
Original assignee: Chongqing Howe Packing Products Co ltd
Current assignee: Chongqing Howe Packing Products Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-07-09
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a carton printing device, which comprises a workbench, a transportation mechanism, a top frame, a flattening mechanism, a lifting mechanism, a printing component, two mounting frames, two fixed blocks, two sliding blocks, two positioning bodies and two elastic pieces; the conveying mechanism is arranged on the workbench, the top frame is fixed above the workbench, the flattening mechanism and the lifting mechanism are fixed below the top frame, the printing component is fixed below the lifting mechanism, the two mounting frames are arranged on two sides of the printing component, the two fixing blocks, the two sliding blocks and the two elastic pieces are respectively arranged on the two mounting frames, and the two positioning bodies are respectively arranged on the side edges of the two sliding blocks; the paperboard is moved by the conveying mechanism, the flattening mechanism flattens the paperboard, the lifting mechanism controls the two positioning bodies to press and position the paperboard, and the paperboard is printed by the printing assembly; in this way, the problem of unclear patterns printed on the paperboard due to unevenness of the paperboard during printing is avoided.

Description

Carton printing device

Technical Field

The utility model relates to a carton printing device technical field especially relates to a carton printing device.

Background

The carton is usually used as a packaging product in life, and different patterns are printed on the carton by a merchant according to different packaging products, and the pattern is required to be printed by a carton printing device. The existing carton printing device is used for printing patterns on a paperboard firstly and then combining the paperboards into a carton, but the printed patterns are not clear and cannot be printed with complete patterns due to the unevenness of the paperboards in the process of printing the paperboards.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a carton printing device aims at solving the unclear problem of pattern that leads to the printing because of the cardboard unevenness in carton printing process.

In order to achieve the purpose, the utility model provides a carton printing device, which comprises a workbench, a transportation mechanism, a top frame, a flattening mechanism, a lifting mechanism, a printing component, two mounting frames, two fixed blocks, two sliders, two positioning bodies and two elastic pieces; the conveying mechanism is fixedly connected with the workbench and is positioned above the workbench; the top frame is fixedly connected with the workbench and is positioned above the workbench; the flattening mechanism is fixedly connected with the top frame and is positioned below the top frame; the lifting mechanism is fixedly connected with the top frame and is positioned below the top frame; the printing assembly is fixedly connected with the lifting mechanism and is positioned below the lifting mechanism; the two mounting racks are respectively fixedly connected with the printing assembly and are respectively positioned on two sides of the printing assembly; the two fixed blocks are respectively and fixedly connected with the two mounting frames and are respectively positioned below the two mounting frames; the two sliding blocks are respectively connected with the two mounting frames in a sliding manner and are respectively positioned on the side edges of the two mounting frames; the two positioning bodies are respectively and fixedly connected with the two sliding blocks and are respectively positioned on the side edges of the two sliding blocks; two elastic component one end respectively with two fixed block fixed connection, two the elastic component is kept away from two fixed block one end respectively with two slider fixed connection, two the elastic component is located two respectively the fixed block with two between the slider.

The conveying mechanism comprises two first bearing seats, two second bearing seats, two first rotating shafts, two second rotating shafts, a first driving roller, a second driving roller, a first motor and a first conveyor belt; the two first bearing seats are respectively and fixedly connected with the workbench and are respectively positioned on one side of the workbench; the two second bearing seats are respectively and fixedly connected with the workbench and are respectively positioned on one side of the workbench far away from the two first bearing seats; the two first rotating shafts are respectively and rotatably connected with the two first bearing seats, and respectively penetrate through the two first bearing seats and are respectively positioned at the centers of the two first bearing seats; the two second rotating shafts are respectively and rotatably connected with the two second bearing seats, and respectively penetrate through the two second bearing seats and are respectively positioned at the centers of the two second bearing seats; the first driving roller is respectively and fixedly connected with the two first rotating shafts and is positioned between the two first rotating shafts; the second driving roller is respectively and fixedly connected with the two second rotating shafts and is positioned between the two second rotating shafts; the output end of the first motor is fixedly connected with the first rotating shaft and is positioned at one end of the first rotating shaft, which is far away from the first driving roller; the first conveyor belt is in transmission connection with the first driving roller and the second driving roller respectively and is positioned outside the first driving roller and the second driving roller.

The flattening mechanism comprises two third bearing seats, two fourth bearing seats, two third rotating shafts, two fourth rotating shafts, a third driving roller, a fourth driving roller, a second motor and a second conveyor belt; the two third bearing seats are respectively and fixedly connected with the top frame and are respectively positioned on one side, far away from the lifting mechanism, below the top frame; the two fourth bearing seats are respectively and fixedly connected with the top frame and are respectively positioned on one side of the top frame close to the lifting mechanism; the two third rotating shafts are respectively and rotatably connected with the two third bearing seats, and respectively penetrate through the two third bearing seats and are respectively positioned in the centers of the two third bearing seats; the two fourth rotating shafts are respectively and rotatably connected with the two fourth bearing seats, and respectively penetrate through the two fourth bearing seats and are respectively positioned in the centers of the two fourth bearing seats; the third driving roller is respectively and fixedly connected with the two third rotating shafts and is positioned between the two third rotating shafts; the fourth driving roller is respectively and fixedly connected with the two fourth rotating shafts and is positioned between the two fourth rotating shafts; the output end of the second motor is fixedly connected with the third rotating shaft and is positioned at one end of the third rotating shaft, which is far away from the third driving roller; the second conveyor belt is in transmission connection with the third driving roller and the fourth driving roller respectively and is positioned on the outer sides of the third driving roller and the fourth driving roller.

The lifting mechanism comprises a mounting frame, two sliding racks, a pressure rod, a third motor, a transmission shaft and a sector gear; the mounting frame is fixedly connected with the top frame and is positioned below the top frame; the two sliding racks are respectively connected with the mounting frame in a sliding manner and are respectively positioned on two sides in the mounting frame; the compression bar is fixedly connected with the two sliding racks and is positioned below the two sliding racks; the third motor is fixedly connected with the top frame and is positioned below the top frame and close to one side of the mounting frame; one end of the transmission shaft is fixedly connected with the output end of the third motor and is positioned on the side edge of the third motor; the sector gear and one end, far away from the third motor, of the transmission shaft are fixedly connected and are positioned between the two sliding racks.

Wherein the sliding rack comprises a slider and a rack; the sliding part is connected with the mounting frame in a sliding manner and is positioned on one side in the mounting frame; the rack is fixedly connected with the sliding piece and is positioned on the side edge of the sliding piece.

Wherein the printing assembly comprises a liquid storage tank and a printing stamp; the liquid storage tank is fixedly connected with the pressure rod and is positioned below the pressure rod; the printing stamp is fixedly connected with the liquid storage box and is positioned below the liquid storage box.

The positioning body comprises a positioning rod and a positioning block; the positioning rod is fixedly connected with the sliding block and is positioned on the side edge of the sliding block; the positioning block is fixedly connected with the positioning rod and is positioned below the positioning rod.

The carton printing device of the utility model can rotate the two first rotating shafts in the two first bearing seats by rotationally connecting the two first rotating shafts with the two first bearing seats, so that the first driving roller fixed with the two first rotating shafts can rotate; the first motor is started to drive the first rotating shaft to rotate in the first bearing seat, so that a first driving roller fixedly connected with the first rotating shaft is driven to rotate; the two second rotating shafts can rotate in the two second bearing seats by rotationally connecting the two second rotating shafts with the two second bearing seats, so that the second driving roller fixed with the two second rotating shafts can rotate; through the first conveyor belt arranged on the outer sides of the first driving roller and the second driving roller, when the first driving roller rotates, the second driving roller is driven to rotate through the first conveyor belt, so that the first conveyor belt can flow, and paper boards can be conveyed by putting the paper boards on the first conveyor belt; the two third rotating shafts are rotatably connected with the two third bearing seats, so that the two third rotating shafts can rotate in the two third bearing seats, and the third driving roller fixed with the two third rotating shafts can rotate; the second motor is started to drive the third rotating shaft to rotate in the third bearing seat, so that a third driving roller fixedly connected with the third rotating shaft is driven to rotate; the two fourth rotating shafts can rotate in the two fourth bearing seats by rotationally connecting the two fourth rotating shafts with the two fourth bearing seats, so that the fourth driving roller fixed with the two fourth rotating shafts can rotate; through the second conveyor belt arranged outside the third driving roller and the fourth driving roller, when the third driving roller rotates, the fourth driving roller is driven to rotate through the second conveyor belt, so that the second conveyor belt can flow; the distance between the second conveyor belt and the first conveyor belt is the same as the thickness of the paperboard, when the paperboard on the first conveyor belt is not flat and has a raised part, the second conveyor belt can carry out back pressure on the paperboard, so that the paperboard is kept flat, and the paperboard is conveniently printed; the mounting frame is provided with a sliding chute matched with the two sliding parts, so that the two racks fixedly connected with the two sliding parts can slide in the mounting frame; by fixedly connecting the transmission shaft with the third motor, turning on the third motor drives the transmission shaft to rotate, so as to drive the sector gear connected with the transmission shaft to rotate, and when the sector gear rotates to be meshed with one rack, the rack is driven to move downwards, so that the pressure rod fixed below the rack moves downwards; when the sector gear rotates to be meshed with the other rack, the sector gear drives the rack to move upwards, so that the pressure rod fixed below the rack moves upwards; when the press rod moves downwards, the printing component fixed below the press rod is driven to move downwards, so that the mounting rack fixed with the printing component is driven to move downwards, and then the positioning rod and the positioning block move downwards; because the positioning rod is longer than the printing assembly, the positioning block can contact the lower paper board firstly; the mounting bracket is equipped with two the spout that the slider matches, works as during locating piece and cardboard contact, will make with the fixed slider of locating lever shifts up, at this moment will stretch with slider fixed connection the elastic component borrows by the elastic potential energy of elastic component, the locating piece can be fixed the cardboard and play the effect that flattens to the cardboard, works as the printing subassembly is accomplished the cardboard printing back the depression bar shifts up, the location body will no longer fix the cardboard, can print next cardboard. By adopting the mode, the printing of the paperboard can be conveniently finished, the condition that the printed pattern is not clear due to the unevenness of the paperboard can be avoided, and the printing quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of the present invention.

Fig. 2 is a partially enlarged view of fig. 1A.

Fig. 3 is a schematic structural diagram of the workbench and the transportation mechanism of the present invention.

Fig. 4 is a schematic structural view of the top frame and the flattening mechanism of the present invention.

Fig. 5 is a front sectional view of the lifting mechanism of the present invention.

Fig. 6 is a top sectional view of the elevating mechanism of the present invention.

Fig. 7 is a front view of the sliding rack of the present invention.

Fig. 8 is a schematic view of a printing assembly according to the present invention.

Fig. 9 is a schematic structural view of the positioning body of the present invention.

1-workbench, 2-transport mechanism, 3-top frame, 4-flattening mechanism, 5-lifting mechanism, 6-printing component, 7-mounting frame, 8-fixing block, 9-sliding block, 10-positioning body, 11-elastic piece, 21-first bearing seat, 22-second bearing seat, 23-first rotating shaft, 24-second rotating shaft, 25-first driving roller, 26-second driving roller, 27-first motor, 28-first conveyor belt, 41-third bearing seat, 42-fourth bearing seat, 43-third rotating shaft, 44-fourth rotating shaft, 45-third driving roller, 46-fourth driving roller, 47-second motor, 48-second conveyor belt, 51-mounting frame, 52-sliding rack, 53-pressure bar, 54-third motor, 55-transmission shaft, 56-sector gear, 521-sliding piece, 522-rack, 61-liquid storage tank, 62-printing stamp, 101-positioning rod and 102-positioning block.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and 2, the present invention provides a carton printing apparatus: the automatic printing machine comprises a workbench 1, a conveying mechanism 2, a top frame 3, a flattening mechanism 4, a lifting mechanism 5, a printing assembly 6, two mounting frames 7, two fixing blocks 8, two sliding blocks 9, two positioning bodies 10 and two elastic pieces 11; the conveying mechanism 2 is fixedly connected with the workbench 1 and is positioned above the workbench 1; the top frame 3 is fixedly connected with the workbench 1 and is positioned above the workbench 1; the flattening mechanism 4 is fixedly connected with the top frame 3 and is positioned below the top frame 3; the lifting mechanism 5 is fixedly connected with the top frame 3 and is positioned below the top frame 3; the printing component 6 is fixedly connected with the lifting mechanism 5 and is positioned below the lifting mechanism 5; the two mounting frames 7 are respectively and fixedly connected with the printing component 6 and are respectively positioned at two sides of the printing component 6; the two fixing blocks 8 are respectively and fixedly connected with the two mounting frames 7 and are respectively positioned below the two mounting frames 7; the two sliding blocks 9 are respectively connected with the two mounting frames 7 in a sliding manner and are respectively positioned on the side edges of the two mounting frames 7; the two positioning bodies 10 are respectively and fixedly connected with the two sliding blocks 9 and are respectively positioned on the side edges of the two sliding blocks 9; two 11 one ends of elastic component respectively with two fixed block 8 fixed connection, two elastic component 11 keeps away from two 8 one ends of fixed block respectively with two slider 9 fixed connection, two elastic component 11 is located two respectively between fixed block 8 and two slider 9.

In the embodiment, the conveying mechanism 2 is opened to move the paper board, the distance between the conveying mechanism 2 and the flattening mechanism 4 is the same as the thickness of the paper board, when the paper board on the conveying mechanism 2 is uneven and tilted, the flattening mechanism 4 is opened, and the flattening mechanism 4 presses the paper board to keep the paper board flat, so that the paper board can be conveniently printed; when the paperboard moves below the printing component 6, the lifting mechanism 5 is started, and when the lifting mechanism 5 descends, the printing component 6 fixed below is driven to descend, so that the mounting frame 7 fixed with the printing component 6 is driven to descend, and the positioning body 10 descends; since the positioning body 10 is longer than the printing group 6, it will first touch the lower sheet; the mounting frame 7 is provided with two chutes matched with the sliding blocks 9, when the positioning body 10 contacts with the paperboard, the sliding blocks 9 fixed with the positioning body 10 can ascend, at the moment, the elastic pieces 11 fixedly connected with the sliding blocks 9 can be stretched, the elastic potential energy of the elastic pieces 11 can be used, the positioning body 10 can fix the paperboard and can flatten the paperboard in the descending process, when the printing component 6 finishes printing the paperboard, the lifting mechanism 5 ascends, and the positioning body 10 can not fix the paperboard any more and can print the next paperboard. Through the mode, the problem that printed patterns are not clear due to the fact that the paperboard is not flat when the carton is printed can be solved.

Further, referring to fig. 3, the transportation mechanism 2 includes two first bearing seats 21, two second bearing seats 22, two first rotating shafts 23, two second rotating shafts 24, a first driving roller 25, a second driving roller 26, a first motor 27, and a first conveyor belt 28; the two first bearing seats 21 are respectively and fixedly connected with the workbench 1 and are respectively positioned on one side of the workbench 1; the two second bearing seats 22 are respectively and fixedly connected with the workbench 1 and are respectively positioned on one side of the workbench 1 away from the two first bearing seats 21; the two first rotating shafts 23 are respectively and rotatably connected with the two first bearing seats 21, and the two first rotating shafts 23 respectively penetrate through the two first bearing seats 21 and are respectively positioned in the centers of the two first bearing seats 21; the two second rotating shafts 24 are respectively and rotatably connected with the two second bearing seats 22, and the two second rotating shafts 24 respectively penetrate through the two second bearing seats 22 and are respectively located at the centers of the two second bearing seats 22; the first driving roller 25 is respectively and fixedly connected with the two first rotating shafts 23 and is positioned between the two first rotating shafts 23; the second driving roller 26 is respectively and fixedly connected with the two second rotating shafts 24 and is positioned between the two second rotating shafts 24; the output end of the first motor 27 is fixedly connected with the first rotating shaft 23 and is located at one end of the first rotating shaft 23 far away from the first driving roller 25; the first conveyor belt 28 is in transmission connection with the first driving roller 25 and the second driving roller 26, and is located outside the first driving roller 25 and the second driving roller 26.

In the present embodiment, by rotationally connecting the two first rotating shafts 23 to the two first bearing housings 21, the two first rotating shafts 23 can be rotated in the two first bearing housings 21, and the first driving roller 25 fixed to the two first rotating shafts 23 can be rotated; the first motor 27 is turned on to rotate the first rotating shaft 23 in the first bearing seat 21, so as to rotate the first driving roller 25 fixedly connected with the first rotating shaft 23; by rotationally connecting the two second rotating shafts 24 with the two second bearing seats 22, the two second rotating shafts 24 can be rotated in the two second bearing seats 22, so that the second driving roller 26 fixed with the two second rotating shafts 24 can be rotated; through the first conveyor belt 28 arranged outside the first driving roller 25 and the second driving roller 26, when the first driving roller 25 rotates, the first conveyor belt 28 drives the second driving roller 26 to rotate, so that the first conveyor belt 28 can flow, and the cardboard can be conveyed by putting the cardboard on the first conveyor belt 28; by the mode, the paperboard can be conveniently transported, and the printing efficiency is improved.

Further, referring to fig. 4, the flattening mechanism 4 includes two third bearing seats 41, two fourth bearing seats 42, two third rotating shafts 43, two fourth rotating shafts 44, a third driving roller 45, a fourth driving roller 46, a second motor 47, and a second conveyor belt 48; the two third bearing seats 41 are respectively and fixedly connected with the top frame 3 and are respectively positioned on one side, far away from the lifting mechanism 5, below the top frame 3; the two fourth bearing seats 42 are respectively and fixedly connected with the top frame 3 and are respectively positioned on one side of the top frame 3 close to the lifting mechanism 5; the two third rotating shafts 43 are respectively and rotatably connected with the two third bearing seats 41, and the two third rotating shafts 43 respectively penetrate through the two third bearing seats 41 and are respectively located at the centers of the two third bearing seats 41; the two fourth rotating shafts 44 are respectively and rotatably connected with the two fourth bearing seats 42, and the two fourth rotating shafts 44 respectively penetrate through the two fourth bearing seats 42 and are respectively located at the centers of the two fourth bearing seats 42; the third driving roller 45 is respectively and fixedly connected with the two third rotating shafts 43 and is positioned between the two third rotating shafts 43; the fourth driving roller 46 is respectively and fixedly connected with the two fourth rotating shafts 44 and is positioned between the two fourth rotating shafts 44; the output end of the second motor 47 is fixedly connected with the third rotating shaft 43 and is located at one end of the third rotating shaft 43, which is far away from the third driving roller 45; the second conveyor belt 48 is in transmission connection with the third driving roller 45 and the fourth driving roller 46, and is located outside the third driving roller 45 and the fourth driving roller 46.

In the present embodiment, by rotationally connecting the two third rotating shafts 43 to the two third bearing seats 41, the two third rotating shafts 43 can be rotated in the two third bearing seats 41, so that the third driving rollers 45 fixed to the two third rotating shafts 43 can be rotated; the second motor 47 is turned on to drive the third rotating shaft 43 to rotate in the third bearing seat 41, so as to drive the third driving roller 45 fixedly connected with the third rotating shaft 43 to rotate; by rotationally connecting the two fourth rotating shafts 44 with the two fourth bearing seats 42, the two fourth rotating shafts 44 can be rotated in the two fourth bearing seats 42, so that the fourth driving roller 46 fixed with the two fourth rotating shafts 44 can be rotated; by the second conveyor belt 48 disposed outside the third driving roller 45 and the fourth driving roller 46, when the third driving roller 45 rotates, the fourth driving roller 46 is driven by the second conveyor belt 48 to rotate, so that the second conveyor belt 48 can flow; second conveyer belt 48 with interval between the transport mechanism 2 is the same with cardboard thickness, and when the cardboard unevenness on transport mechanism 2 had the portion of perk, second conveyer belt 48 can carry out the back pressure to the cardboard, makes the cardboard keep level and smooth, is convenient for print the cardboard, avoids leading to the unclear problem of pattern after the printing because of the cardboard unevenness.

Further, referring to fig. 5 and 6, the lifting mechanism 5 includes a mounting frame 51, two sliding racks 52, a pressing rod 53, a third motor 54, a transmission shaft 55 and a sector gear 56; the mounting frame 51 is fixedly connected with the top frame 3 and is positioned below the top frame 3; the two sliding racks 52 are respectively connected with the mounting frame 51 in a sliding manner and are respectively positioned on two sides inside the mounting frame 51; the pressure lever 53 is fixedly connected with the two sliding racks 52 and is positioned below the two sliding racks 52; the third motor 54 is fixedly connected with the top frame 3 and is positioned below the top frame 3 and close to one side of the mounting frame 51; one end of the transmission shaft 55 is fixedly connected with the output end of the third motor 54 and is positioned on the side edge of the third motor 54; the sector gear 56 and one end of the transmission shaft 55 far away from the third motor 54 are fixedly connected and are positioned between the two sliding racks 52.

In the present embodiment, the mounting frame 51 is provided with a sliding slot matching with the two sliding racks 52, so that the two sliding racks 52 can slide in the mounting frame 51; by fixedly connecting the transmission shaft 55 and the third motor 54, turning on the third motor 54 will rotate the transmission shaft 55, and thus the sector gear 56 connected to the transmission shaft 55, and when the sector gear 56 is rotated to engage with one of the sliding racks 52, it will drive the sliding rack 52 to move downwards, and thus the pressing rod 53 fixed under the sliding rack 52 moves downwards; when the sector gear 56 rotates to engage with the other sliding rack 52, the sector gear will drive the sliding rack 52 to move upwards, so that the pressure rod 53 fixed below the sliding rack 52 moves upwards; in this way, the raising and lowering of the printing group 6 mounted underneath can be easily controlled, so that the printing group 6 can complete the printing of the sheets.

Further, referring to fig. 7, the sliding rack 52 includes a sliding member 521 and a rack 522; the sliding part 521 is slidably connected with the mounting frame 51 and is positioned on one side inside the mounting frame 51; the rack 522 is fixedly connected with the sliding member 521 and is located at the side of the sliding member 521.

In the present embodiment, the mounting frame 51 is provided with a sliding slot matched with the sliding element 521, so that the sliding element 521 can slide in the mounting frame 51, and thus the rack 522 can slide; when the sector gear 56 rotates to be engaged with the rack 522, the rack 522 can be controlled to slide up and down, so that the press rod 53 fixed below is controlled to ascend or descend, and further, the printing assembly 6 fixed below the press rod 53 can conveniently print on the paper board.

Further, referring to fig. 8, the printing assembly 6 includes a liquid storage tank 61 and a printing stamp 62; the liquid storage tank 61 is fixedly connected with the pressure lever 53 and is positioned below the pressure lever 53; the printing stamp 62 is fixedly connected with the liquid storage box 61 and is positioned below the liquid storage box 61.

In this embodiment, the printing stamp 62 is fixed below the liquid storage box 61, so that the liquid storage box 61 can conveniently provide ink for the printing stamp 62, the printing stamp 62 can print more paper boards, and the printing efficiency is improved.

Further, referring to fig. 9, the positioning body 10 includes a positioning rod 101 and a positioning block 102; the positioning rod 101 is fixedly connected with the sliding block 9 and is positioned on the side edge of the sliding block 9; the positioning block 102 is fixedly connected with the positioning rod 101 and is located below the positioning rod 101.

In this embodiment, the positioning rod 101 and the slider 9 are fixedly connected to each other, so that the positioning rod 101 can move up and down, the positioning block 102 fixed below is controlled to move up and down, the paper board can be pressed by the positioning block 102, the paper board can be kept flat, and the printing component 6 can clearly print patterns on the paper board.

The utility model discloses a theory of operation and use flow: after the utility model is installed, the two first rotating shafts 23 are rotatably connected with the two first bearing seats 21, so that the two first rotating shafts 23 can rotate in the two first bearing seats 21, and the first driving roller 25 fixed with the two first rotating shafts 23 can rotate; the first motor 27 is turned on to rotate the first rotating shaft 23 in the first bearing seat 21, so as to rotate the first driving roller 25 fixedly connected with the first rotating shaft 23; by rotationally connecting the two second rotating shafts 24 with the two second bearing seats 22, the two second rotating shafts 24 can be rotated in the two second bearing seats 22, so that the second driving roller 26 fixed with the two second rotating shafts 24 can be rotated; through the first conveyor belt 28 arranged outside the first driving roller 25 and the second driving roller 26, when the first driving roller 25 rotates, the first conveyor belt 28 drives the second driving roller 26 to rotate, so that the first conveyor belt 28 can flow, and the cardboard can be conveyed by putting the cardboard on the first conveyor belt 28; by rotationally connecting the two third rotating shafts 43 with the two third bearing seats 41, the two third rotating shafts 43 can be rotated in the two third bearing seats 41, so that the third driving roller 45 fixed with the two third rotating shafts 43 can be rotated; the second motor 47 is turned on to drive the third rotating shaft 43 to rotate in the third bearing seat 41, so as to drive the third driving roller 45 fixedly connected with the third rotating shaft 43 to rotate; by rotationally connecting the two fourth rotating shafts 44 with the two fourth bearing seats 42, the two fourth rotating shafts 44 can be rotated in the two fourth bearing seats 42, so that the fourth driving roller 46 fixed with the two fourth rotating shafts 44 can be rotated; by the second conveyor belt 48 disposed outside the third driving roller 45 and the fourth driving roller 46, when the third driving roller 45 rotates, the fourth driving roller 46 is driven by the second conveyor belt 48 to rotate, so that the second conveyor belt 48 can flow; the distance between the second conveyor belt 48 and the first conveyor belt 28 is the same as the thickness of the paperboard, and when the paperboard on the first conveyor belt 28 is not flat and has a raised part, the second conveyor belt 48 can press the paperboard back to keep the paperboard flat, so that the paperboard can be conveniently printed; the mounting frame 51 is provided with a sliding slot matched with the two sliding parts 521, so that the two racks 522 fixedly connected with the two sliding parts 521 can slide in the mounting frame 51; by fixedly connecting the transmission shaft 55 and the third motor 54, turning on the third motor 54 will rotate the transmission shaft 55, and thus the sector gear 56 connected to the transmission shaft 55, and when the sector gear 56 is rotated to engage with one of the racks 522, it will drive the rack 522 to move downwards, and thus the pressing rod 53 fixed below the rack 522 moves downwards; when the sector gear 56 rotates to engage with the other rack 522, it will bring the rack 522 upwards, so that the pressing rod 53 fixed under the rack 522 upwards; when the press rod 53 moves downwards, the printing component 6 fixed below is driven to move downwards, so that the mounting rack 7 fixed with the printing component 6 is driven to move downwards, and then the positioning rod 101 and the positioning block 102 move downwards; since the positioning rod 101 is longer than the printing element 6, the positioning block 102 will contact the lower paper plate first; the mounting frame 7 is provided with two sliding chutes matched with the sliding blocks 9, when the positioning block 102 contacts with the paperboard, the sliding block 9 fixed with the positioning rod 101 moves upwards, the elastic part 11 fixedly connected with the sliding block 9 is stretched, and the positioning block 102 can fix the paperboard and flatten the paperboard by means of the elastic potential energy of the elastic part 11, when the printing component 6 finishes printing the paperboard, the pressing rod 53 moves upwards, the positioning body 10 does not fix the paperboard any more, and the next paperboard can be printed. By adopting the mode, the printing of the paperboard can be conveniently finished, the condition that the printed patterns are not clear due to the unevenness of the paperboard can be avoided, and the printing quality is improved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A carton printing device is characterized by comprising a workbench, a conveying mechanism, a top frame, a flattening mechanism, a lifting mechanism, a printing assembly, two mounting frames, two fixed blocks, two sliding blocks, two positioning bodies and two elastic pieces; the conveying mechanism is fixedly connected with the workbench and is positioned above the workbench; the top frame is fixedly connected with the workbench and is positioned above the workbench; the flattening mechanism is fixedly connected with the top frame and is positioned below the top frame; the lifting mechanism is fixedly connected with the top frame and is positioned below the top frame; the printing assembly is fixedly connected with the lifting mechanism and is positioned below the lifting mechanism; the two mounting racks are respectively fixedly connected with the printing assembly and are respectively positioned on two sides of the printing assembly; the two fixed blocks are respectively and fixedly connected with the two mounting frames and are respectively positioned below the two mounting frames; the two sliding blocks are respectively connected with the two mounting frames in a sliding manner and are respectively positioned on the side edges of the two mounting frames; the two positioning bodies are respectively and fixedly connected with the two sliding blocks and are respectively positioned on the side edges of the two sliding blocks; two elastic component one end respectively with two fixed block fixed connection, two the elastic component is kept away from two fixed block one end respectively with two slider fixed connection, two the elastic component is located two respectively the fixed block with two between the slider.

2. The carton printing apparatus of claim 1, wherein said transport mechanism comprises two first bearing blocks, two second bearing blocks, two first spindles, two second spindles, a first drive roller, a second drive roller, a first motor, and a first conveyor belt; the two first bearing seats are respectively and fixedly connected with the workbench and are respectively positioned on one side of the workbench; the two second bearing seats are respectively and fixedly connected with the workbench and are respectively positioned on one side of the workbench far away from the two first bearing seats; the two first rotating shafts are respectively and rotatably connected with the two first bearing seats, and respectively penetrate through the two first bearing seats and are respectively positioned at the centers of the two first bearing seats; the two second rotating shafts are respectively and rotatably connected with the two second bearing seats, and respectively penetrate through the two second bearing seats and are respectively positioned at the centers of the two second bearing seats; the first driving roller is respectively and fixedly connected with the two first rotating shafts and is positioned between the two first rotating shafts; the second driving roller is respectively and fixedly connected with the two second rotating shafts and is positioned between the two second rotating shafts; the output end of the first motor is fixedly connected with the first rotating shaft and is positioned at one end of the first rotating shaft, which is far away from the first driving roller; the first conveyor belt is in transmission connection with the first driving roller and the second driving roller respectively and is positioned outside the first driving roller and the second driving roller.

3. The carton printing apparatus of claim 1, wherein said flattening mechanism comprises two third bearing blocks, two fourth bearing blocks, two third spindles, two fourth spindles, a third drive roller, a fourth drive roller, a second motor, and a second conveyor; the two third bearing seats are respectively and fixedly connected with the top frame and are respectively positioned on one side, far away from the lifting mechanism, below the top frame; the two fourth bearing seats are respectively and fixedly connected with the top frame and are respectively positioned on one side of the top frame close to the lifting mechanism; the two third rotating shafts are respectively and rotatably connected with the two third bearing seats, and respectively penetrate through the two third bearing seats and are respectively positioned in the centers of the two third bearing seats; the two fourth rotating shafts are respectively and rotatably connected with the two fourth bearing seats, and respectively penetrate through the two fourth bearing seats and are respectively positioned in the centers of the two fourth bearing seats; the third driving roller is respectively and fixedly connected with the two third rotating shafts and is positioned between the two third rotating shafts; the fourth driving roller is respectively and fixedly connected with the two fourth rotating shafts and is positioned between the two fourth rotating shafts; the output end of the second motor is fixedly connected with the third rotating shaft and is positioned at one end of the third rotating shaft, which is far away from the third driving roller; the second conveyor belt is in transmission connection with the third driving roller and the fourth driving roller respectively and is positioned on the outer sides of the third driving roller and the fourth driving roller.

4. The carton printing apparatus of claim 1, wherein said lifting mechanism comprises a mounting frame, two sliding racks, a press bar, a third motor, a drive shaft, and a sector gear; the mounting frame is fixedly connected with the top frame and is positioned below the top frame; the two sliding racks are respectively connected with the mounting frame in a sliding manner and are respectively positioned on two sides in the mounting frame; the compression bar is fixedly connected with the two sliding racks and is positioned below the two sliding racks; the third motor is fixedly connected with the top frame and is positioned below the top frame and close to one side of the mounting frame; one end of the transmission shaft is fixedly connected with the output end of the third motor and is positioned on the side edge of the third motor; the sector gear and one end, far away from the third motor, of the transmission shaft are fixedly connected and are positioned between the two sliding racks.

5. The carton printing apparatus of claim 4 wherein said sliding rack comprises a slider and a rack; the sliding part is connected with the mounting frame in a sliding manner and is positioned on one side in the mounting frame; the rack is fixedly connected with the sliding piece and is positioned on the side edge of the sliding piece.

6. The carton printing apparatus of claim 4 wherein said printing assembly comprises a reservoir and a printing stamp; the liquid storage tank is fixedly connected with the pressure rod and is positioned below the pressure rod; the printing stamp is fixedly connected with the liquid storage box and is positioned below the liquid storage box.

7. The carton printing apparatus of claim 1, wherein said positioning body comprises a positioning rod and a positioning block; the positioning rod is fixedly connected with the sliding block and is positioned on the side edge of the sliding block; the positioning block is fixedly connected with the positioning rod and is positioned below the positioning rod.