CN212472589U

CN212472589U - Automatic printing device for printing packaging carton

Info

Publication number: CN212472589U
Application number: CN202020613969.7U
Authority: CN
Inventors: 杨传
Original assignee: Changsha Normal University
Current assignee: Changsha Normal University
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-02-05
Anticipated expiration: 2030-04-22

Abstract

The utility model provides a packing carton printing is with automatic printing device, comprises a workbench, the workstation top surface is equipped with transport structure, the support of the top surface fixed mounting type of falling U of workstation, the horizontal part bottom surface fixed mounting printing machine of support, the vertical guide rail of the equal fixed mounting in vertical portion inboard of support, one side that the guide rail is close to the workstation middle part all is equipped with sliding fit's electronic slider with it, the first electric telescopic handle of one side equal bearing installation expansion end towards the horizontally in workstation middle part that electronic slider is close to the workstation middle part. This device is applicable to the printing of the packing carton that the lateral wall carries out the printing all around of needs of rectangle, thereby adopts the mode that first ring and splint combined together to make the relative centre gripping blast apparatus of carton rotate, not only makes the carton homoenergetic accomplish the printing processing operation all around, can also weather all around the carton simultaneously after the printing is accomplished, adopts centre gripping blast apparatus to weather the carton to can effectually ensure the effect of carton printing all around.

Description

Automatic printing device for printing packaging carton

Technical Field

The utility model belongs to carton packing lithography apparatus field, specifically speaking are automatic printing device is used in printing of packing carton.

Background

Along with the development and progress of the society, the application of an automation technology in each field is gradually frequent, the packaging and printing industry is gradually converted from traditional manual operation to automatic operation, most packaging cartons are packaging measures taken for protecting products and facilitating transportation, and most production enterprises print pattern marks such as product names and the like on the periphery of the packaging cartons, so that the attractiveness of the product packaging cartons can be effectively improved, the product packaging cartons are convenient to identify, and the propaganda effect can be achieved; the authorization publication number of CN 209794708U discloses printing equipment for an automatic packaging carton, but the printing equipment cannot perform printing operation on the peripheral side face of the carton at one time, and the printing efficiency is low; after the periphery of the carton in the prior art is printed, the printing patterns on the periphery of the carton are not completely dried, the carton is moved, so that the printing patterns are easily damaged, the printing effect is influenced, and the appearance is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a packing carton printing is with automatic printing device for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

an automatic printing device for printing packaging cartons comprises a workbench, wherein a conveying structure is arranged on the top surface of the workbench, an inverted U-shaped support is fixedly arranged on the top surface of the workbench, a printing machine is fixedly arranged on the bottom surface of the horizontal part of the support, vertical guide rails are fixedly arranged on the inner sides of the vertical parts of the support, electric slide blocks in sliding fit with the guide rails are arranged on one sides of the guide rails close to the middle part of the workbench, horizontal first electric telescopic rods with movable ends facing towards the middle part of the workbench are respectively arranged on one sides of the electric slide blocks close to the middle part of the workbench in a bearing mode, circular clamping plates are respectively and fixedly arranged on the movable ends of the first electric telescopic rods, first circular rings are respectively arranged on the outer sides of the first circular rings, movable ends perpendicular to the first circular rings are respectively and fixedly arranged on the front and the rear sides of the first circular rings face towards second electric telescopic rods far away from the centers of the circular rings, and horizontal telescopic clamping and, the clamping and blowing structure is fixedly connected with one end of an air inlet hose, the other end of the air inlet hose is fixedly connected with a hot air supply device, one side of an electric slider close to the middle of the workbench is fixedly provided with a third telescopic rod parallel to a first electric telescopic rod, the third telescopic rod is positioned below the corresponding first electric telescopic rod, the movable end of the third telescopic rod is fixedly connected with one side of a first circular ring away from the middle of the workbench, the outer side of the movable end of the first electric telescopic rod is provided with a second circular ring in a bearing manner, a vertical connecting rod is fixedly arranged between the second circular ring and the corresponding third telescopic rod, one side of the electric slider close to the middle of the workbench is provided with a power device for driving the first electric telescopic rod on the corresponding side to rotate, one side of the workbench is fixedly provided with a controller, the controller is connected with a power supply, the conveying structure, the electric slider, the first electric telescopic rod, the, The hot air supply device and the power device are respectively connected with the power supply and the controller.

As above an automatic printing device is used in packing carton printing, centre gripping structure of blowing include the sleeve pipe, first venthole, the movable tube, the spout, first slider, a spring, the second venthole, the equal fixed mounting horizontally sleeve pipe of expansion end of second electric telescopic handle, the sleeve pipe is close to the one end opening at workstation middle part, the first venthole that the several is equidistant evenly distributed is all seted up to the relative one side of two sleeves that lie in the homonymy, be equipped with the movable tube of sealing contact complex with it in the sleeve pipe, the outer end of movable tube all lies in the sheathed tube outside that corresponds, horizontal spout is all seted up to both sides around the sheathed tube, all be equipped with the first slider of sliding fit with it in the spout, the equal fixed connection of the outer end of first slider corresponds the inner outside of movable tube, fixed mounting spring between the one side that first slider is close to workstation middle part and the spout inner wall that corresponds, the several is equidistant evenly distributed's second venthole is seted up to the one side that the periphery corresponds first venthole And one end of the sleeve, which is far away from the middle part of the workbench, is fixedly connected with one end of the corresponding air inlet hose and communicated with the inside of the air inlet hose.

As above, automatic printing device is used in packing carton printing, power device include servo motor, first gear, second gear, the equal fixed mounting output shaft of one side of electronic slider towards the workstation middle part is towards the servo motor of workstation middle part one side, the equal fixed mounting first gear of servo motor's output shaft, the second gear of suit is all fixed to first electric telescopic handle's fixed part periphery, first gear all with the second gear meshing cooperation that corresponds, servo motor is connected with power, controller respectively.

According to the automatic printing device for printing the packaging carton, the front side and the rear side of the vertical part of the support are fixedly provided with the hose fixing clamps, and the air inlet hose penetrates through the hose fixing clamps on the corresponding sides and is connected with the hot air supply device.

According to the automatic printing device for printing the packaging cartons, the supporting legs are fixedly arranged at the four corners of the bottom surface of the workbench, and the workbench is placed above the bottom surface through the supporting legs.

The utility model has the advantages that: the utility model is suitable for the printing of rectangular packing cartons which need to be printed on the peripheral side walls; as shown in fig. 1, in an initial state, the first electric telescopic rod, the second electric telescopic rod and the third telescopic rod are all in a contracted state, the clamping and blowing devices are also in a contracted state, the distance between the bottom surface of the printing machine and the top surface of the conveying structure is greater than the length of a diagonal line of a carton, the maximum distance between the two clamping and blowing devices positioned on the same side is greater than the length of the diagonal line of the carton, and the maximum distance between the two clamping and blowing devices positioned on the same side is less than the distance between the bottom surface of the printing machine and the top; the two electric sliding blocks are positioned at the lower parts of the corresponding guide rails and are flush with each other, the distance between the two corresponding clamping and blowing devices positioned at the two sides is greater than the transverse length of the carton, the maximum distance between the two clamping and blowing devices positioned at the same side is greater than the length of the carton in the front-back direction, and the hot air supply device does not convey hot air into the air inlet hose; the method comprises the following steps that a worker places paper boxes needing to be printed at the rear side of a workbench in sequence at equal intervals, two sides, which do not need to be printed, of the paper boxes are located on the left side and the right side respectively, the conveying structure conveys the paper boxes from back to front under the control of a controller, when the paper boxes move to the position right below a printing machine, the conveying structure stops conveying, and an electric slide block moves upwards along a corresponding guide rail, so that the axis of a first electric telescopic rod and the centers of the paper boxes are located on the same horizontal plane; the first electric telescopic rod and the second electric telescopic rod are extended to enable the distance between the two clamping and blowing devices positioned on the same side to be maximum, meanwhile, the extension of the first electric telescopic rod enables the second electric telescopic rod and the corresponding clamping plates to move towards the middle part of the workbench, when one side, close to the middle part of the workbench, of the two clamping plates is in contact fit with the corresponding side of the carton, the first electric telescopic rod is not extended any more, meanwhile, the second electric telescopic rod is retracted all the time, one side, opposite to the clamping and blowing devices positioned on the same side, of the two clamping and blowing devices is in contact fit with the periphery of the carton, therefore, the clamping and blowing devices and the clamping plates clamp the carton, and the position of the carton which; then the electric sliding blocks move upwards along the corresponding guide rails, and then the upward side of the carton is positioned below the printer for printing; after the face of the paper box facing upwards is printed, the electric slide block clamps the paper box to move downwards, the center of the paper box is moved to a horizontal plane where the midpoint between the printing machine and the conveying mechanism is located, then the second electric telescopic rods are extended to enable the distance between the two clamping blowing devices located on the same side to be the largest, then the power device drives the corresponding first electric telescopic rods to rotate ninety degrees towards the front side simultaneously, the paper box rotates ninety degrees therewith, the third electric telescopic rods are fixedly connected with the second circular rings through the connecting rods, so that the first circular rings do not rotate along with the corresponding clamping plates, the clamping blowing devices are always located on the front side and the rear side of the paper box, the face of the paper box facing upwards originally faces forwards, the face of the paper box facing backwards faces upwards simultaneously, then the electric slide block moves upwards along the corresponding guide rail simultaneously, and the printing machine prints the top face of the paper box at, similarly, the operation is continued twice according to the operation, so that the printing on the periphery of the carton is finished; then the electric slider drives the paper box to move downwards, so that the center of the paper box is positioned at the same horizontal plane with the midpoint of the printing machine and the conveying mechanism, then the hot air supply device conveys hot air into the air inlet hose, meanwhile, the power device simultaneously drives the corresponding first electric telescopic rods to rotate along with the first electric telescopic rods, simultaneously, the clamping plates clamp the paper box to rotate, so that the paper box rotates towards the clamping and blowing device, the hot air blows to the periphery of the paper box through the clamping and blowing device, so as to blow dry the periphery of the paper box, after the paper box is dried, the electric slider moves downwards along the corresponding guide rails, so that the clamping plates and the paper box both move downwards along with the guide rails, so that the bottom surface of the paper box is in contact fit with the top surface of the conveying structure, then the first electric telescopic rods contract simultaneously, then the conveying structure continuously conveys the printed carton forwards, and the next carton continues to be printed in the same way; the utility model relates to a rationally, think about ingeniously, thereby the mode that adopts first ring and splint to combine together makes the relative centre gripping blast apparatus of carton rotate, not only makes the carton homoenergetic accomplish the printing processing operation all around, simultaneously can also be after the printing is accomplished, adopts centre gripping blast apparatus to weather the carton all around to can effectually ensure the effect that the carton printed all around, and adopt automatic printing operation, the operation of accuracy changes ensures the printing quality, promote work efficiency, therefore, the clothes hanger is strong in practicability.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is an enlarged view of the view from FIG. 1A; FIG. 3 is an enlarged view of a portion of FIG. 1I; FIG. 4 is an enlarged view of a portion of FIG. 1 II; fig. 5 is an enlarged view of a portion of fig. 2 iii.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An automatic printing device for printing packaging cartons, as shown in the figure, comprises a workbench 1, wherein a conveying structure is arranged on the top surface of the workbench 1, an inverted U-shaped bracket 2 is fixedly arranged on the top surface of the workbench 1, a printing machine is fixedly arranged on the bottom surface of a horizontal part of the bracket 2, a vertical guide rail 3 is fixedly arranged on the inner side of a vertical part of the bracket 2, an electric slide block 4 in sliding fit with the guide rail 3 is arranged on one side of the guide rail 3 close to the middle part of the workbench 1, a first electric telescopic rod 5 with a movable end facing to the horizontal part of the middle part of the workbench 1 is arranged on one side of the electric slide block 4 close to the middle part of the workbench 1 in a bearing way, a circular clamping plate 6 is fixedly arranged on the movable end of the first electric telescopic rod 5, a first circular ring 7 is arranged on the outer circumference of the clamping plate 6, one side of the clamping plate 6 close to the middle part of the workbench 1 is arranged on the outer side of the, the movable ends of the second electric telescopic rods 8 are fixedly provided with horizontal telescopic clamping blowing structures, the clamping blowing structures are fixedly connected with one ends of the air inlet hoses 9, the other ends of the air inlet hoses 9 are fixedly connected with hot air supply devices, one sides of the electric sliding blocks 4 close to the middle part of the workbench are fixedly provided with third telescopic rods 10 parallel to the first electric telescopic rods 5, the third telescopic rods 10 are positioned below the corresponding first electric telescopic rods 5, the movable ends of the third telescopic rods 10 are fixedly connected with one sides of the first circular rings 7 far away from the middle part of the workbench 1, the outer sides of the movable ends of the first electric telescopic rods 5 are respectively provided with second circular rings 11 in a bearing manner, vertical connecting rods 12 are fixedly arranged between the second circular rings 11 and the corresponding third telescopic rods 10, one sides of the electric sliding blocks 4 close to the middle part of the workbench 1 are respectively provided with power devices for driving the first electric telescopic rods 5 at the corresponding sides to, a controller 13 is fixedly installed on one side of the workbench 1, the controller 13 is connected with a power supply, and the conveying structure, the electric sliding block 4, the first electric telescopic rod 5, the second electric telescopic rod 8, the hot air supply device and the power device are respectively connected with the power supply and the controller 13. The utility model is suitable for the printing of rectangular packing cartons which need to be printed on the peripheral side walls; as shown in fig. 1 in an initial state, the first electric telescopic rod 5, the second electric telescopic rod 8 and the third telescopic rod 10 are all in a contracted state, the clamping and blowing devices are also in a contracted state, the distance between the bottom surface of the printing machine and the top surface of the conveying structure is greater than the length of a diagonal line of the carton 25, the maximum distance between the two clamping and blowing devices on the same side is greater than the length of the diagonal line of the carton 25, and the maximum distance between the two clamping and blowing devices on the same side is less than the distance between the bottom surface of the printing machine and the top surface of the; the two electric sliding blocks 4 are positioned at the lower part of the corresponding guide rail 3 and are flush with each other, the distance between the two corresponding clamping and blowing devices positioned at the two sides is greater than the transverse length of the paper box 25, the maximum distance between the two clamping and blowing devices positioned at the same side is greater than the length of the paper box 25 in the front-back direction, and the hot air supply device does not convey hot air into the air inlet hose 9; the working personnel sequentially place the paper boxes 25 to be printed at the rear side of the workbench 1 at equal intervals, two sides of the paper boxes 25 which do not need to be printed are respectively positioned at the left side and the right side, the conveying structure conveys the paper boxes 25 from back to front under the control of the controller 13, when the paper boxes 25 move to the position right below the printing machine, the conveying structure stops conveying, and the electric sliding blocks 4 move upwards along the corresponding guide rails 3, so that the axes of the first electric telescopic rods 5 and the centers of the paper boxes 25 are positioned on the same horizontal plane; the first electric telescopic rod 5 and the second electric telescopic rod 8 are extended to enable the distance between the two clamping and blowing devices on the same side to be maximum, meanwhile, the extension of the first electric telescopic rod 5 enables the second electric telescopic rod 8 and the corresponding clamping plate 6 to move towards the middle of the workbench 1, when one side, close to the middle of the workbench 1, of the two clamping plates 6 is in contact fit with the corresponding side of the carton 25, the first electric telescopic rod 5 is not extended, meanwhile, the second electric telescopic rod 8 is contracted, so that the opposite side of the clamping and blowing devices on the same side is in contact fit with the periphery of the carton 25, and therefore the clamping and blowing devices and the clamping plates 6 clamp the carton 25 and can enable the position of the carton 25 which is originally inclined relative to the support 2 to be adjusted; then the electric sliding blocks 4 move upwards along the corresponding guide rails 3, and then the upward side of the paper box 25 is positioned below the printing machine for printing; after the face of the paper box 25 facing upwards is printed, the electric slider 4 clamps the paper box 25 to move downwards, so that the center of the paper box 25 moves to a horizontal plane where the midpoint between the printing machine and the conveying mechanism is located, then the second electric telescopic rods 8 are extended to maximize the distance between the two clamping and blowing devices located on the same side, then the power device drives the corresponding first electric telescopic rods 5 to rotate ninety degrees forwards simultaneously, so that the paper box 25 rotates ninety degrees therewith, because the third electric telescopic rods 10 are fixedly connected with the second circular rings 11 through the connecting rods 12, the first circular rings 7 do not rotate along with the corresponding clamping plates 6, and the clamping and blowing devices are located on the front side and the rear side of the paper box 26 all the time, so that the face of the paper box 25 facing upwards originally faces forwards, and the face of the paper box 25 facing backwards, then the electric slider 4 moves upwards along the corresponding guide rail 3 simultaneously, the printer prints the top surface of the paper box 25 at the moment, and similarly, the operation is continued twice according to the operation, so that the printing on the periphery of the paper box 25 is completed; then the electric slider 4 drives the paper box 25 to move downwards, so that the center of the paper box 25 is positioned at the same horizontal plane with the midpoint of the printing machine and the conveying mechanism, then the hot air supply device conveys hot air into the air inlet hose 9, meanwhile, the power device simultaneously drives the corresponding first electric telescopic rods 5 to rotate along with the first electric telescopic rods, simultaneously the clamping plates 6 clamp the paper box 25 to rotate, so that the paper box 25 rotates towards the clamping and blowing device, the hot air blows towards the periphery of the paper box 25 through the clamping and blowing device, thereby drying the periphery of the paper box 25, after the paper box 25 is dried, the electric slider 4 moves downwards along the corresponding guide rails 3, so that the clamping plates 6 and the paper box 25 both move downwards along with the clamping and blowing device, thereby the bottom surface of the paper box 26 is in contact fit with the top surface of the conveying mechanism, then the first electric telescopic rods 5 simultaneously contract, so that the clamping plates 6 move away from one, then the conveying structure conveys the printed paper box 25 forwards continuously, and the next paper box continues to perform printing operation in the same way; the utility model relates to a rationally, think about ingeniously, thereby the mode that adopts first ring 7 and splint 6 to combine together makes the relative centre gripping blast apparatus of carton 25 rotate, not only make carton 25 all around the homoenergetic accomplish the printing processing operation, simultaneously can also be after the printing is accomplished, adopt centre gripping blast apparatus to weather carton 25 all around, thereby can effectually ensure the effect that the carton printed all around, and adopt automatic printing operation, the operation of accuracy ensures the printing quality, promote work efficiency, therefore, the clothes hanger is strong in practicability.

Specifically, as shown in fig. 1, the clamping blowing structure according to this embodiment includes a sleeve 14, first air outlet holes 18, a movable tube 15, a sliding chute 16, a first sliding block 17, a spring 19, and a second air outlet hole 20, wherein the movable end of the second electric telescopic rod 8 is fixedly installed with a horizontal sleeve 14, one end of the sleeve 14 close to the middle of the workbench 1 is opened, one side of the sleeve 14 opposite to the two sleeves 14 on the same side is provided with a plurality of first air outlet holes 18 uniformly distributed at equal intervals, the sleeve 14 is internally provided with the movable tube 15 in sealing contact with the movable tube, the outer end of the movable tube 15 is located at the outer side of the corresponding sleeve 14, the front and rear sides of the sleeve 14 are provided with horizontal sliding chutes 16, the sliding chutes 16 are internally provided with first sliding blocks 17 in sliding fit with the sliding chutes 16, the outer end of the first sliding blocks 17 is fixedly connected to the outer sides of the inner ends of the corresponding movable tubes 15, the first sliding blocks 17 are fixedly installed between one, one side of the periphery of the movable pipe 15 corresponding to the first air outlet 18 is provided with a plurality of second air outlets 20 which are uniformly distributed at equal intervals, and one end of the sleeve 14 far away from the middle part of the workbench 1 is fixedly connected with one end of the corresponding air inlet hose 9 and communicated with the inside of the same. In the initial state, the hot air supply device does not supply air to the air inlet hose 9, and the springs 19 are in the normal extension state; when the carton needs to be clamped, under the control of the controller 13, the first electric telescopic rod 5 and the second electric telescopic rod 8 extend simultaneously, so that the left side and the right side of the carton are in contact fit with the first circular ring 7 on the corresponding side, the carton is located between the two sleeves 14 on the same side, then the second electric telescopic rod 8 contracts, one side, opposite to the two sleeves 14 on the same side, is in contact fit with the front side and the rear side of the carton, and the sleeves 14 clamp the carton from the front side and the rear side; when the printing of the four surfaces of the carton is finished, the second electric telescopic rod 8 extends to enable the sleeve 14 not to contact with the outer side of the carton, then the hot air supply device supplies air into the air inlet hose 9 to convey hot air into the sleeve 14, after the hot air enters the sleeve 14, the pressure in the sleeve 14 is increased, the hot air pushes the corresponding movable pipe 15 and the corresponding first slide block 17 to move to one side of the middle part of the workbench 1 along the corresponding chute 16, the spring 19 is compressed, meanwhile, the hot air is sprayed out to one side of the carton through the first air outlet hole 18 and the second air outlet hole 20 to dry the outer side of the carton, after the drying is finished, the hot air supply device does not supply the hot air into the air inlet hose 9, the movable pipe 15 is retracted to the sleeve 14 under the elastic action of the corresponding spring 19 to contract to an initial state, the spring 19 is compressed by the entering of the hot air, so that the movable pipe 15 moves to the outer side, thereby make second venthole 20 all be located the sleeve pipe 14 outside to make the effect of blowing better, add the printing pattern that makes the carton and weather fast, blow simultaneously and dry after finishing, movable tube 15 withdraws automatically, thereby the centre gripping of carrying on next carton that can be better.

Specifically, as shown in fig. 4, the power device described in this embodiment includes a servo motor 21, a first gear 22, and a second gear 23, the servo motor 21 whose output shaft faces one side of the middle of the workbench 1 is fixedly installed on one side of the middle of the workbench 4, the first gear 22 is fixedly installed on the output shaft of the servo motor 21, the second gear 23 is fixedly installed on the periphery of the fixing portion of the first electric telescopic rod 5, the first gear 22 is engaged with the corresponding second gear 23, and the servo motor 21 is connected with the power source and the controller 13. In the using process, under the control of the controller 13, the servo motor 21 works, and since the first gear 22 is engaged with the corresponding second gear 23, the rotation of the output shaft of the servo motor 21 drives the first electric telescopic rod 5 on the corresponding side to rotate therewith.

Further, as shown in fig. 1, hose fixing clips 24 are fixedly installed on the front and rear sides of the vertical portion of the bracket 2 according to the embodiment, and the air inlet hose 9 penetrates through the hose fixing clip 24 on the corresponding side to be connected to the hot air supply device. The hose fixing clip 24 can effectively fix the air intake hose 9.

Furthermore, as shown in fig. 1, support legs 25 are fixedly installed at four corners of the bottom surface of the workbench 1 according to the embodiment, and the workbench 1 is placed above the bottom surface through the support legs 25. The table 1 is placed above the ground by means of support legs 25, so that the printed carton is better processed further.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a packing carton printing is with automatic printing device which characterized in that: comprises a workbench (1), a conveying structure is arranged on the top surface of the workbench (1), an inverted U-shaped bracket (2) is fixedly arranged on the top surface of the workbench (1), a printing machine is fixedly arranged on the bottom surface of the horizontal part of the bracket (2), vertical guide rails (3) are fixedly arranged on the inner sides of the vertical part of the bracket (2), one sides of the guide rails (3) close to the middle part of the workbench (1) are respectively provided with an electric slider (4) in sliding fit with the guide rails, one sides of the electric sliders (4) close to the middle part of the workbench (1) are respectively provided with a horizontal first electric telescopic rod (5) with a movable end facing the middle part of the workbench (1), movable ends of the first electric telescopic rods (5) are respectively and fixedly provided with a circular clamping plate (6), a first circular ring (7) is arranged on the peripheral bearing of the clamping plate (6), one side of the clamping plate (6) close to the middle part of the, the front side and the rear side of the first ring (7) are fixedly provided with a second electric telescopic rod (8) with the movable end vertical to the first ring facing to the direction far away from the center of the circle, the movable end of the second electric telescopic rod (8) is fixedly provided with a horizontal telescopic clamping blowing structure, the clamping blowing structure is fixedly connected with one end of an air inlet hose (9), the other end of the air inlet hose (9) is fixedly connected with a hot air supply device, one side of an electric slide block (4) close to the middle part of the workbench is fixedly provided with a third telescopic rod (10) parallel to the first electric telescopic rod (5), the third telescopic rods (10) are all positioned below the corresponding first electric telescopic rods (5), the movable end of the third telescopic rod (10) is fixedly connected with one side of the first ring (7) far away from the middle part of the workbench (1), the outer side of the movable end of the first electric telescopic rod (5) is provided with a second ring (11), vertical connecting rod (12) of fixed mounting between second ring (11) and the third telescopic link (10) that corresponds, one side that electric slider (4) are close to workstation (1) middle part all is equipped with the drive and corresponds first electric telescopic handle (5) pivoted power device of side, one side fixed mounting controller (13) of workstation (1), controller (13) are connected with the power, transport structure, electric slider (4), first electric telescopic handle (5), second electric telescopic handle (8), steam feeding mechanism, power device equally divide respectively with the power, controller (13) are connected.

2. The automatic printing device for printing packaging cartons as claimed in claim 1, wherein: the clamping blowing structure comprises a sleeve (14), first air outlet holes (18), movable pipes (15), sliding grooves (16), first sliding blocks (17), springs (19) and second air outlet holes (20), the movable ends of the second electric telescopic rods (8) are fixedly provided with the horizontal sleeve (14), one end of the sleeve (14) close to the middle part of the workbench (1) is opened, one side, opposite to the two sleeves (14) on the same side, is provided with a plurality of first air outlet holes (18) which are uniformly distributed at equal intervals, the movable pipes (15) which are in sealing contact and matched with the sleeve (14) are arranged in the sleeve (14), the outer ends of the movable pipes (15) are arranged on the outer sides of the corresponding sleeve (14), the front side and the rear side in the sleeve (14) are provided with the horizontal sliding grooves (16), the first sliding blocks (17) which are in sliding fit with the sliding grooves (16) are arranged in the sliding grooves (16), the outer ends of the first sliding blocks (17) are fixedly connected with the, fixed mounting spring (19) between one side that first slider (17) are close to workstation (1) middle part and corresponding spout (16) inner wall, several equidistant evenly distributed's second venthole (20) are seted up to one side that the periphery of movable tube (15) corresponds first venthole (18), and the equal fixed connection of one end in workstation (1) middle part is kept away from in sleeve pipe (14) one end of hose (9) that admits air that corresponds just communicates with inside.

3. The automatic printing device for printing packaging cartons as claimed in claim 1, wherein: the power device include servo motor (21), first gear (22), second gear (23), electric slider (4) are towards servo motor (21) of the equal fixed mounting output shaft of one side of workstation (1) middle part one side of workstation (1), the equal fixed mounting first gear (22) of output shaft of servo motor (21), suit second gear (23) are all fixed to the fixed part periphery of first electric telescopic handle (5), first gear (22) all with second gear (23) meshing cooperation that corresponds, servo motor (21) respectively with the power, controller (13) are connected.

4. An automatic printing device for printing packaging cartons, as claimed in claim 1, 2 or 3, wherein: the air inlet hose fixing device is characterized in that hose fixing clamps (24) are fixedly mounted on the front side and the rear side of the vertical portion of the support (2), and the air inlet hose (9) penetrates through the hose fixing clamps (24) on the corresponding sides and is connected with a hot air supply device.

5. An automatic printing device for printing packaging cartons, as claimed in claim 1, 2 or 3, wherein: the four corners of the bottom surface of the workbench (1) are fixedly provided with supporting legs (25), and the workbench (1) is placed above the bottom surface through the supporting legs (25).