CN110757891A

CN110757891A - Carton lithography apparatus convenient to cardboard location

Info

Publication number: CN110757891A
Application number: CN201910949774.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shenyang Bingheng Technology Co Ltd
Current assignee: Shenyang Bingheng Technology Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-02-07

Abstract

The invention discloses a carton printing device convenient for positioning a paperboard, which comprises a support frame, wherein the upper end of the support frame is connected with a support frame plate, the support frame plate is in bearing connection with a single-rotation reciprocating screw rod, a servo motor is installed on the support frame, the servo motor is connected with 1 of 2 single-rotation reciprocating screw rods through a second belt transmission mechanism, and the 2 single-rotation reciprocating screw rods are connected through a first belt transmission mechanism. This carton lithography apparatus convenient to cardboard location can be convenient for treat the carton of printing and carry on spacingly, guarantee that the position of printing is accurate enough, and can be convenient for adjust the distance between the limiting plate, so that this lithography apparatus can carry on spacingly to the carton of equidimension not, thereby be convenient for carry out accurate printing to the carton of equidimension not, and only when printing the carton, the printing roller just can rotate, thereby can avoid because the rotation of printing roller, cause the air-dry of dyestuff on it too fast, be favorable to resources are saved.

Description

Carton lithography apparatus convenient to cardboard location

Technical Field

The invention relates to the technical field of carton printing, in particular to carton printing equipment convenient for positioning a paperboard.

Background

The carton all need print its surface at the in-process of production to in the clear different objects of different carton splendid attire of distinguishing, and through printing the carton surface, can be convenient for distinguish the brand of carton, also can warn the icon through printing in addition, so that remind the staff when carrying the carton that is equipped with the object, gently take and put etc. carton lithography apparatus is exactly the equipment of being convenient for carry out the printing to the carton.

However, the existing carton printing equipment still has certain problems in the using process, such as:

1. when the existing carton printing equipment is used, the carton is not convenient to position, so that printed patterns and characters and the like are printed askew when the carton is printed, the attractiveness of the carton is affected, and the printed patterns or characters are printed in a blurred manner due to the fact that the carton is not positioned;

2. the existing carton printing equipment is inconvenient to position cartons with different sizes, so that the existing carton printing equipment is limited to a certain extent when printing the cartons, and the practicability of the existing carton printing equipment is inconvenient to increase;

3. when the existing carton printing equipment is used, the printing roller is always rotated, so that the dye on the printing roller is easily and excessively quickly dried by air, the utilization rate of the dye is not favorably improved, and the resources are not favorably saved

To sum up, a carton printing device convenient for positioning of a paperboard is designed so as to solve the problems.

Disclosure of Invention

The invention aims to provide a carton printing device convenient for positioning a paperboard, and aims to solve the problems that the existing carton printing device in the background art is inconvenient for positioning cartons, cannot be applied to cartons with different sizes, and is not beneficial to saving resources.

In order to achieve the purpose, the invention provides the following technical scheme: a carton printing device convenient for paperboard positioning comprises a support frame, wherein a support frame plate is connected to the upper end of the support frame, a single-rotation reciprocating screw rod is connected to the support frame plate through a bearing, a servo motor is installed on the support frame and is connected with 1 of 2 single-rotation reciprocating screw rods through a second belt transmission mechanism, the 2 single-rotation reciprocating screw rods are connected through a first belt transmission mechanism, a connecting block is connected to the single-rotation reciprocating screw rod and is connected to the left side and the right side of a connecting frame, the upper ends of the connecting blocks on the same side of the connecting frame are connected through a driving gear plate, the inner side of the connecting frame is connected with a rotating roller, the rotating roller penetrates through a limiting plate, the lower end of the limiting plate is connected with a reinforcing block, a threaded rod penetrates through the lower ends of the reinforcing block and the limiting plate, and a bearing at one end of the threaded, the threaded rod sets up in the below of commentaries on classics roller, and the bearing is connected between the other end of threaded rod, the outside of threaded rod is connected with the driving sleeve, and the lower extreme hub connection of driving sleeve has the connecting rod, the one end hub connection of connecting rod is in the inboard of carriage, and the other end of connecting rod is connected with the regulating block, regulating block slip block is in the regulating groove, and the regulating groove sets up in the leading flank of carriage, the upper and lower both sides of regulating groove all are provided with the latch tooth, and the latch tooth is connected with the outer end meshing of latch fitting, the latch fitting stretches into in the regulating block, and the latch fitting meshes the both sides of drive gear respectively, the drive gear key-type connection is in the outside of twisted pipe, and twisted pipe bearing connection and the inboard of regulating block, the moving part has been run through to the inboard of twisted pipe, and the both sides setting that the regulating block was run, and the inner bottom end in movable groove is connected with the sleeve pipe, the sleeve pipe activity nestification is in the outside of telescopic link, and is connected through compression spring between the outside of telescopic link and the sheathed tube inboard to the upper end of telescopic link is connected in the lower extreme of spacing strip, it is connected with the axle head to run through the bearing on the support deckle board, and the axle head is connected in the both ends of printing the roller, key connection has drive gear on the axle head, and drive gear sets up directly over driving the pinion rack.

Preferably, the single-rotation reciprocating screw rod is connected with the connecting block in a threaded connection mode, and the connecting block and the driving toothed plate are integrally arranged.

Preferably, the structure shape of adjustment tank is the arc, and the equidistant evenly distributed in upper and lower both sides of adjustment tank has the lock tooth to 2 adjustment tanks and the middle part symmetry setting of adjustment tank front side.

Preferably, the limiting plate is movably connected with the rotating roller, and the rotating roller is uniformly distributed on the inner side of the connecting frame.

Preferably, the threaded rod is connected with the driving sleeve in a threaded connection mode, and the 2 threaded rods are coaxially arranged.

Preferably, the inner side of the twist pipe and the outer side of the I-shaped movable piece are provided with twist-shaped threads which are matched with each other, and the twist-shaped threads and the I-shaped movable piece are in threaded connection.

Preferably, the driving toothed plate only has continuous 3/5 and has equidistant and uniform distribution of teeth on the length, and the teeth on the driving toothed plate are arranged corresponding to the driving gear.

Preferably, the number of the connecting rods is 2, the 2 connecting rods form an inverted V shape, and a symmetry line between the connecting rods is collinear with the central axis of the adjusting groove.

Preferably, the structure shape of boss is the triangular prism shape, and boss and limiting plate be the integral structure setting to the inclined plane of boss sets up to the limiting plate dorsad.

Preferably, the limiting strips and the telescopic rods are of 7-shaped integrated structures, the limiting strips and the telescopic rods are respectively arranged vertically and parallel to the limiting plates, and the limiting strips are arranged between the rotating rollers.

Compared with the prior art, the invention has the beneficial effects that: this carton lithography apparatus convenient to cardboard location can be convenient for treat the carton of printing and carry on spacingly, guarantee that the position of printing is accurate enough, and can be convenient for adjust the distance between the limiting plate, so that this lithography apparatus can carry on spacingly to the carton of equidimension not, thereby be convenient for carry out accurate printing to the carton of equidimension not, and only when printing the carton, the printing roller just can rotate, thereby can avoid because the rotation of printing roller, cause the too fast air-dry of dyestuff above that, be favorable to resources are saved:

1. the limiting plate can be used for limiting the transverse direction of the carton conveniently, and the limiting strip can be used for limiting the longitudinal direction of the carton conveniently, so that the carton can be fixed on the printing equipment conveniently, the printing roller can print the carton stably, the printing accuracy is ensured, and the limiting strip for limiting the carton can not influence the printing operation of the printing roller on the carton as the limiting strip can move downwards;

2. the twisted tube can be conveniently driven to rotate by pressing the moving part on one side of the adjusting block, and then the transmission gear connected with the key on the twisted tube is driven to rotate, so that the transmission gear drives 2 locking pieces connected with the transmission gear in a meshing way to be close to each other, so that the locking pieces are disconnected from the locking teeth in a meshing way, and the adjusting block can slide in the adjusting groove, so that the connecting rod can be driven to rotate, and the driving sleeve connected with the connecting rod shaft is driven to move on the threaded rod, so that the rotation of the threaded rod is realized, and further the limiting plate and the reinforcing block connected with the threaded rod move along the axis of the limiting plate together, so that the purpose of adjusting the distance between the limiting plates;

3. through servo motor (6), first belt drive mechanism (4) and second belt drive mechanism (5) drive 2 single-turn reciprocating screw rod (3) synchronous rotations, can be convenient for drive connection box and drive pinion reciprocating motion, so as to drive the carton reciprocating motion on the connection box, after drive pinion removes to a locating position, the teeth of a cogwheel on it will be connected with drive gear meshing, later the continuation of drive pinion removes the axle head that can drive the key-type connection and have drive gear and rotate, rotate with driving the printing roller, thereby make the printing roller just can rotate when printing the carton, can avoid the dyestuff above that to be by too fast air-dry, be favorable to resources are saved, and reciprocating motion through drive pinion, can make the printing roller just reverse, thereby can carry out dual printing to the carton, be favorable to improving the definition of printing pattern.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged view of point A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of a cross-sectional connection structure of an adjusting block according to the present invention;

FIG. 4 is a schematic view of the present invention showing the connection between the locking member and the twisted tube;

FIG. 5 is a schematic top view of the connection frame of the present invention;

FIG. 6 is a schematic view of a connection structure of a limiting plate according to the present invention;

FIG. 7 is an enlarged view of point B of FIG. 6 according to the present invention;

FIG. 8 is a schematic diagram of a side view connection structure of the single-turn reciprocating screw rod of the present invention;

fig. 9 is a schematic view of the position structure of the shaft end and the driving toothed plate of the invention.

In the figure: 1. a support frame; 2. supporting the frame plate; 3. a single-rotation reciprocating screw rod; 4. a first belt drive mechanism; 5. a second belt drive mechanism; 6. a servo motor; 7. a connecting frame; 8. an adjustment groove; 9. a limiting plate; 10. a shaft end; 11. a printing roller; 12. an adjusting block; 13. a movable member; 14. a threaded rod; 15. locking teeth; 16. a lock; 17. a transmission gear; 18. a twist pipe; 19. rotating the roller; 20. connecting blocks; 21. a driving toothed plate; 22. a connecting rod; 23. a reinforcing block; 24. a drive sleeve; 25. a drive gear; 26. a limiting strip; 27. a telescopic rod; 28. a movable groove; 29. a compression spring; 30. a sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a carton printing device convenient for paperboard positioning comprises a support frame 1, a support frame plate 2, a single-rotation reciprocating screw rod 3, a first belt transmission mechanism 4, a second belt transmission mechanism 5, a servo motor 6, a connecting frame 7, an adjusting groove 8, a limiting plate 9, a shaft end 10, a printing roller 11, an adjusting block 12, a moving part 13, a threaded rod 14, a lock tooth 15, a lock piece 16, a transmission gear 17, a twist tube 18, a rotating roller 19, a connecting block 20, a driving toothed plate 21, a connecting rod 22, a reinforcing block 23, a driving sleeve 24, a driving gear 25, a limiting strip 26, a telescopic rod 27, a movable groove 28, a compression spring 29 and a sleeve 30, wherein the support frame plate 2 is connected to the upper end of the support frame 1, the single-rotation reciprocating screw rod 3 is connected to a bearing on the support frame plate 2, the servo motor 6 is installed on the support frame 1, and the servo motor 6 is connected with 1 of the 2 single-rotation reciprocating screw rods 3 through the second, and 2 single-rotation reciprocating screw rods 3 are connected with each other through a first belt transmission mechanism 4, the single-rotation reciprocating screw rods 3 are connected with connecting blocks 20, the connecting blocks 20 are connected with the left side and the right side of a connecting frame 7, the upper ends of the connecting blocks 20 on the same side of the connecting frame 7 are connected with each other through a driving toothed plate 21, the inner side of the connecting frame 7 is connected with a rotating roller 19, the rotating roller 19 penetrates through a limiting plate 9, the lower end of the limiting plate 9 is connected with a reinforcing block 23, the reinforcing block 23 and the lower end of the limiting plate 9 penetrate through a threaded rod 14, one end of the threaded rod 14 is connected with the inner side of the connecting frame 7 in a bearing manner, the threaded rod 14 is arranged below the rotating roller 19, the other ends of the threaded rod 14 are connected with each other in a bearing manner, the outer side of the threaded rod 14 is connected with a driving sleeve 24, the lower end of the driving, the adjusting block 12 is slidably clamped in the adjusting groove 8, the adjusting groove 8 is arranged on the front side surface of the connecting frame 7, the upper side and the lower side of the adjusting groove 8 are both provided with locking teeth 15, the locking teeth 15 are meshed with the outer end of a locking piece 16, the locking piece 16 extends into the adjusting block 12, the locking piece 16 is respectively meshed with the two sides of a transmission gear 17, the transmission gear 17 is in key connection with the outer side of a twisted pipe 18, the twisted pipe 18 is in bearing connection with the inner side of the adjusting block 12, a movable piece 13 penetrates through the inner side of the twisted pipe 18, two ends of the movable piece 13 penetrate through the two sides of the adjusting block 12, a movable groove 28 is arranged on the limiting plate 9, the inner bottom end of the movable groove 28 is connected with a sleeve 30, the sleeve 30 is movably nested on the outer side of the telescopic rod 27, the outer side of the telescopic rod 27 and the inner side of the sleeve 30 are connected, the support frame plate 2 is connected with a shaft end 10 through a bearing, the shaft end 10 is connected to two ends of the printing roller 11, the shaft end 10 is connected with a driving gear 25 through a key, and the driving gear 25 is arranged right above the driving toothed plate 21.

The single-rotation reciprocating screw rod 3 is connected with the connecting block 20 in a threaded connection mode, the connecting block 20 and the driving toothed plate 21 are integrally arranged, the single-rotation reciprocating screw rod 3 can rotate conveniently, the connecting block 20 in threaded connection can move along the axis in a reciprocating mode, and the connecting block 20 can move stably through the connecting block 20 to drive the driving toothed plate 21 to move.

The structural shape of adjustment tank 8 is the arc, and the equal interval's of upper and lower both sides of adjustment tank 8 evenly distributed has lock tooth 15 to 2 adjustment tanks 8 and the middle part symmetry setting of adjustment tank 8 front side.

Limiting plate 9 and commentaries on classics roller 19 swing joint, and change the inboard of roller 19 even distribution in splice frame 7, can be convenient for limiting plate 9's removal and the rotation of changeing roller 19 do not influence each other.

The threaded rod 14 is connected with the driving sleeve 24 in a threaded connection mode, and the 2 threaded rods 14 are coaxially arranged, so that the driving sleeve 24 in threaded connection can be driven to move along the axis by the rotation of the threaded rod 14 conveniently, and the rotation of the 2 threaded rods 14 cannot be influenced by each other.

The inner side of the twist pipe 18 and the outer side of the I-shaped moving part 13 are provided with twist threads which are matched with each other, and the twist pipe 18 and the I-shaped moving part 13 are in threaded connection and can be driven to rotate by the movement of the I-shaped moving part 13.

The driving toothed plate 21 only has gear teeth distributed uniformly at equal intervals in the length of the continuous 3/5, and the direction of the gear teeth on the driving toothed plate 21 corresponds to the arrangement of the driving gear 25, so that the driving toothed plate 21 can be meshed with the driving gear 25 after moving to a certain position.

The number of connecting rods 22 is 2, and 2 connecting rods 22 constitute the "V" font of inversion to the line of symmetry between the connecting rods 22 and the middle part axis collineation of adjustment tank 8 can be convenient for adjust 2 limiting plate 9's position respectively through 2 connecting rods 22.

The structural shape of boss 23 is the triangular prism shape, and boss 23 and limiting plate 9 be the integral structure setting to the inclined plane of boss 23 sets up to limiting plate 9 dorsad, can be convenient for increase limiting plate 9's intensity through boss 23, guarantees that limiting plate 9 is stable carries on spacingly to the carton.

Spacing 26 and telescopic link 27 are the integrated structure of "7" shape, and spacing 26 and telescopic link 27 are perpendicular respectively and are on a parallel with limiting plate 9 and set up to spacing 26 sets up between changeing the roller 19, can be convenient for carry on spacingly through spacing 26 to the carton.

The working principle is as follows: at first install this carton lithography apparatus convenient to cardboard location in the user position to switch on this lithography apparatus's power, and adjust the interval between the limiting plate 9 according to the size of carton, the regulation mode as follows:

according to fig. 1-9, the movable member 13 on one side of the adjusting block 12 is pressed to move the movable member 13 relative to the twisted tube 18, so as to drive the twisted tube 18 to rotate, so as to synchronously rotate the transmission gear 17 connected with the twisted tube 18, so as to make the locking members 16 connected with the transmission gear 17 in a meshing manner close to each other, so that the locking members 16 are disconnected from the locking teeth 15, at this time, the adjusting block 12 moves in the adjusting groove 8 to drive the connecting rod 22 to rotate around one end connected with the connecting shaft of the connecting frame 7, so as to drive the driving sleeve 24 connected with the connecting shaft of the connecting rod to move along the threaded rod 14, so as to rotate the threaded rod 14, when the threaded rod 14 rotates, the limiting plate 9 and the reinforcing block 23 connected with the threaded rod will synchronously move along the axis thereof, so as to change the distance between the limiting plates 9, so that the distance between the limiting plates 9 can adapt to the size of a, pressing the movable piece 13 on the other side of the adjusting block 12 to enable the twisted pipe 18 to rotate reversely, so that the locking pieces 16 are far away from each other, the locking pieces 16 are meshed and connected with the locking teeth 15 on one side of the locking pieces, and the positions of the adjusting block 12 and the connecting rod 22 are fixed;

after the position between the limiting plates 9 is adjusted to a proper size, the unextended carton to be printed is placed above the rotating roller 19, the left side and the right side of the carton are limited by the limiting plates 9, the limiting strips 26 pressed by the lower surfaces of the carton are enabled to move downwards under the action of the telescopic rods 27, the compression springs 29 and the sleeves 30 through the gravity of the carton, and the limiting strips 26 not pressed by the carton can be convenient for limiting the front side and the rear side of the unextended carton;

finally, the servo motor 6 is started, the operation of the servo motor 6 drives the single-rotation reciprocating screw rod 3 connected with the servo motor to rotate through the second belt transmission mechanism 5, after the single-rotation reciprocating screw rod 3 connected with the second belt transmission mechanism 5 rotates, the single-rotation reciprocating screw rod 3 not connected with the second belt transmission mechanism 5 is driven to synchronously rotate through the first belt transmission mechanism 4, 2 single-rotation reciprocating screw rods 3 drive the connecting block 20 connected with the single-rotation reciprocating screw rods to move along the axial direction thereof in the synchronous rotation process, and further drive the connecting frame 7 and the driving toothed plate 21 to synchronously move, when the connecting frame 7 moves, the carton placed on the upper surface of the upper rotating roller 19 of the connecting frame can be driven to move towards the lower part of the printing roller 11, after the driving toothed plate 21 moves to the moving position, the gear teeth on the driving toothed plate are meshed with the driving gear 25, and then the driving toothed plate 21 drives the shaft end 10 connected with the driving gear 25 to rotate in the continuous movement process, after the single-rotation reciprocating screw rod 3 rotates to a certain number of turns, the continuous rotation of the single-rotation reciprocating screw rod 3 enables the connecting block 20 to move reversely along the axial direction of the connecting block, and further enables the connecting frame 7 and the driving toothed plate 21 to move reversely and synchronously, so that the paper box can be printed repeatedly, and printed patterns are clear enough;

the servomotor 6 is turned off when the connecting frame 7 is moved in the reverse direction to the initial position in order to remove the printed carton, after which the above-described printing process is repeated, which is not described in detail in this description and is known to the person skilled in the art.

It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a carton lithography apparatus convenient to cardboard location, includes support frame (1), its characterized in that: the upper end of the support frame (1) is connected with a support frame plate (2), the support frame plate (2) is in bearing connection with a single-rotation reciprocating screw rod (3), a servo motor (6) is installed on the support frame (1), the servo motor (6) is connected with 1 of the 2 single-rotation reciprocating screw rods (3) through a second belt transmission mechanism (5), the 2 single-rotation reciprocating screw rods (3) are connected through a first belt transmission mechanism (4), a connecting block (20) is connected onto the single-rotation reciprocating screw rod (3), the connecting block (20) is connected to the left side and the right side of the connecting frame (7), the upper ends of the connecting blocks (20) on the same side of the connecting frame (7) are connected through a driving toothed plate (21), the inner side of the connecting frame (7) is connected with a rotating roller (19), the rotating roller (19) penetrates through a limiting plate (9), and the lower end of the limiting plate (9) is connected with a reinforcing block (23), the lower extreme of boss (23) and limiting plate (9) runs through threaded rod (14), and the one end bearing of threaded rod (14) is connected in the inboard of carriage (7), threaded rod (14) set up in the below of changeing roller (19), and the bearing is connected between the other end of threaded rod (14), the outside of threaded rod (14) is connected with driving sleeve (24), and the lower extreme hub connection of driving sleeve (24) has connecting rod (22), the one end hub connection of connecting rod (22) is in the inboard of carriage (7), and the other end of connecting rod (22) is connected with regulating block (12), regulating block (12) slip block is in adjustment tank (8), and adjustment tank (8) set up in the leading flank of carriage (7), the upper and lower both sides of adjustment tank (8) all are provided with lock tooth (15), and lock tooth (15) are connected with the outer end meshing of latch fitting (16), the utility model discloses a novel adjustable plastic pipe, including latch fitting (16), drive gear (17) key-type, and the inboard of twist tube (18) bearing connection and regulating block (12), the inboard of twist tube (18) runs through has moving part (13), and the both sides setting of regulating block (12) is run through at the both ends of moving part (13), be provided with movable groove (28) on limiting plate (9), and the interior bottom of movable groove (28) is connected with sleeve pipe (30), sleeve pipe (30) activity nestification is in the outside of telescopic link (27), and is connected through compression spring (29) between the outside of telescopic link (27) and the inboard of sleeve pipe (30) to the upper end of telescopic link (27) is connected in the lower extreme of spacing strip (26), run through the bearing on support frame board (2) and be connected with axle head (10), and axle head (10) are connected in the both ends of printing roller (11), key connection has drive gear (25) on axle head (10), and drive gear (25) set up directly over drive pinion rack (21).

2. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the single-rotation reciprocating screw rod (3) is connected with the connecting block (20) in a threaded connection mode, and the connecting block (20) and the driving toothed plate (21) are integrally arranged.

3. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the structure shape of adjustment tank (8) is the arc, and the equal interval's of upper and lower both sides of adjustment tank (8) evenly distributed has lock tooth (15) to 2 adjustment tank (8) and the middle part symmetry setting of adjustment tank (8) front side.

4. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the limiting plate (9) is movably connected with the rotating roller (19), and the rotating roller (19) is uniformly distributed on the inner side of the connecting frame (7).

5. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the threaded rod (14) is connected with the driving sleeve (24) in a threaded connection mode, and the 2 threaded rods (14) are coaxially arranged.

6. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the inner side of the twist pipe (18) and the outer side of the I-shaped moving piece (13) are provided with twist-shaped threads which are matched with each other, and the twist-shaped threads and the I-shaped moving piece are in threaded connection.

7. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the driving toothed plate (21) is only provided with continuous 3/5 gear teeth which are uniformly distributed in length at equal intervals, and the gear teeth on the driving toothed plate (21) are arranged in a direction corresponding to the driving gear (25).

8. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the number of the connecting rods (22) is 2, the 2 connecting rods (22) form an inverted V shape, and the symmetry line between the connecting rods (22) is collinear with the middle axis of the adjusting groove (8).

9. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the structure shape of boss (23) is the triangular prism shape, and boss (23) and limiting plate (9) set up for the integral structure to the inclined plane of boss (23) sets up limiting plate (9) dorsad.

10. A carton printing apparatus for facilitating positioning of a paperboard as recited in claim 1, wherein: the limiting strips (26) and the telescopic rods (27) are of a 7-shaped integrated structure, the limiting strips (26) and the telescopic rods (27) are respectively arranged vertically and parallelly to the limiting plates (9), and the limiting strips (26) are arranged between the rotating rollers (19).