CN110978743B

CN110978743B - Side pattern printing device for paper-plastic packaging box

Info

Publication number: CN110978743B
Application number: CN201911349205.XA
Authority: CN
Inventors: 赵宝琳; 候军; 杨发斌
Original assignee: Guangdong Bishuo Intelligent Technology Co ltd
Current assignee: Guangdong Bishuo Intelligent Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2024-04-05
Anticipated expiration: 2039-12-24
Also published as: CN110978743A

Abstract

The invention provides a paper-plastic packaging box side pattern printing device which comprises a conveying device, a side pattern printing unit and a lower pressing device, wherein the conveying device is used for conveying paper-plastic packaging boxes; the conveying device comprises a guide rail and a pushing mechanism, and the pushing mechanism is used for pushing the paper-plastic packaging box to the side pattern printing unit along the guide rail; the lower pressing device is arranged on the guide rail corresponding to the side pattern printing unit and is used for pressing the inner side of the paper-plastic packaging box; the side pattern printing unit comprises an ink supply mechanism and a printing assembly, wherein the ink supply mechanism is used for supplying ink to the printing assembly; the printing component is provided with a pattern printing plate, and the pattern printing plate can be attached with ink to form a printing pattern; the printing component can be contacted with the outer side of the paper-plastic packaging box, and the lower pressing device is matched with the printing component to print the printing pattern on the outer side of the paper-plastic packaging box. The invention relates to a paper-plastic packaging box side surface pattern printing device which is used for carrying out more complex pattern printing on the paper-plastic packaging side surface.

Description

Side pattern printing device for paper-plastic packaging box

Technical Field

The invention relates to the field of paper-plastic packaging box printing devices, in particular to a paper-plastic packaging box side pattern printing device.

Background

The paper-plastic packaging box is made of paper pulp, and raw materials of the paper-plastic packaging box can be recycled, so that the paper-plastic packaging box is widely popularized and used, in order to improve the recognition of outer packages of products, the paper-plastic packaging box is convenient for product popularization, corresponding patterns are printed on the paper-plastic packaging box by enterprises, the existing paper-plastic packaging box printing device comprises a conveying mechanism and a printing mechanism, wherein the printing mechanism is an ink-jet printing device, the printing mechanism is arranged above or on the side part of the conveying mechanism, and when the paper-plastic packaging box moves to the position corresponding to the printing mechanism along with the conveying mechanism, the printing mechanism carries out ink-jet printing on the paper-plastic packaging box; however, the paper-plastic packaging box printing device can only be used for printing paper-plastic packaging boxes with standard shapes and uniform total amount, is also limited to ink-jet printing of simple contents (such as printing date, production batch number and other text information), and has no corresponding paper-plastic packaging box printing device in the market for paper-plastic packaging boxes needing to be printed with more complex patterns.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a paper-plastic packaging box side surface pattern printing device which is used for carrying out more complicated pattern printing on the paper-plastic packaging side surface.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the paper-plastic packaging box side pattern printing device comprises a conveying device, a side pattern printing unit and a lower pressing device; the conveying device comprises a guide rail and a pushing mechanism, and the pushing mechanism is used for pushing the paper-plastic packaging box to the side pattern printing unit along the guide rail; the lower pressing device is arranged on the guide rail corresponding to the side pattern printing unit and is used for pressing the inner side of the paper-plastic packaging box; the side pattern printing unit comprises an ink supply mechanism and a printing assembly, wherein the ink supply mechanism is used for supplying ink to the printing assembly; the printing component is provided with a pattern printing plate, and the pattern printing plate can be attached with ink to form a printing pattern; the printing component can be contacted with the outer side of the paper-plastic packaging box, and the lower pressing device is matched with the printing component to print the printing pattern on the outer side of the paper-plastic packaging box.

Compared with the prior art, the paper-plastic packaging box side pattern printing device has the following beneficial effects:

(1) The side pattern printing unit provided with the pattern printing plate is arranged, the pattern printing plate is attached with ink and forms a printing pattern, the pattern printing plate is contacted with the outer side of the paper-plastic packaging box, so that the pattern is printed on the outer side of the paper-plastic packaging box, the automatic printing of the ink output and the pattern is realized, the printing efficiency of the paper-plastic packaging box is improved, in addition, a producer only needs to adjust the type of the ink and replace the pattern printing plates with different patterns, the patterns with rich colors, special patterns and high marks can be printed on the outer side of the paper-plastic packaging box, and the recognition degree of the product external package is effectively improved;

(2) According to the invention, the lower pressing device is arranged on the guide rail corresponding to the side pattern printing unit, so that when the side pattern printing unit prints the outer side surface of the paper-plastic packaging box, the lower pressing device can simultaneously support the inner side of the paper-plastic packaging box, and therefore deformation and even damage of the paper-plastic packaging box caused by overlarge pressure applied to the outer side surface of the paper-plastic packaging box by the side pattern printing unit are avoided, and the lower pressing device can fix the inner side of the paper-plastic packaging box, so that the printing effect of the side pattern printing unit is improved, and the attractiveness of the paper-plastic packaging box after printing patterns is improved; in addition, the lower pressing device plays a limiting role on the movement of the paper-plastic packaging box, so that the paper-plastic packaging box is more stable in movement, and the paper-plastic packaging box is prevented from falling off the guide rail.

Preferably, the side pattern printing unit further comprises a mounting seat, the mounting seat is arranged at the side part of the guide rail, and the ink supply mechanism and the printing component are arranged on the mounting seat; the printing assembly comprises a printing plate roller and a printing roller, and the printing plate roller and the printing roller are axially and rotatably arranged on the mounting seat; the pattern printing plate is arranged on the outer side of the printing plate roller, a printing block is arranged on the outer side of the printing roller and in rolling contact with the pattern printing plate, so that a pattern is formed on the printing block, and the pattern can be printed on the paper-plastic packaging box by the printing block.

The printing assembly adopts the beneficial effects of the setting mode that: the embossing convex surface and the embossing concave surface are arranged on the pattern printing plate, wherein the embossing convex surface is attached with ink to form a printing pattern, on one hand, after the pattern printing plate is attached with the ink, the printing ink on different positions is unevenly distributed due to the difference of the heights of the embossing convex surfaces on different positions, if the pattern printing plate is directly contacted with the paper-plastic packaging box to print the pattern, the local position of the printing pattern is easy to generate chromatic aberration, and on the other hand, if the embossing convex surface is directly contacted with the paper-plastic packaging box, the embossing convex surface can leave embossing on the surface of the paper-plastic packaging box to cause deformation of the paper-plastic packaging box, and the integral design of the paper-plastic packaging box is influenced; the printing block is contacted with the paper-plastic packaging box and then is printed on the paper-plastic packaging box, so that color difference at the local position of the printing pattern is effectively avoided; the printing roller rotates relatively, when the side pattern printing unit contacts with the paper-plastic packaging box and prints patterns, external force applied to the outer side of the paper-plastic packaging box can point to the pushing direction of the pushing mechanism, and the paper-plastic packaging box is prevented from being damaged due to the fact that the force applied by the side pattern printing unit is different from the pushing direction of the pushing mechanism in the printing process.

Preferably, the mounting seat comprises an upper seat body and a lower seat body, the ink supply mechanism and the printing component are arranged on the upper seat body, the upper seat body is arranged on the lower seat body, the front end of the upper seat body is connected with the front end of the lower seat body, and the rear end of the upper seat body is respectively and movably connected with the rear end of the lower seat body; an included angle adjusting mechanism is arranged between the upper seat body and the lower seat body and comprises a push block, the push block is slidably arranged on the lower seat body, one end of a guide rail of the push block is provided with an inclined surface inclined towards the guide rail, the top of the inclined surface of the push block abuts against the upper seat body or the printing assembly, and the position of the push block relative to the lower seat body is adjusted to enable the top of the inclined surface of the push block to abut against the corresponding position of the upper seat body or the printing assembly.

(1) The included angle adjusting mechanism is arranged, so that the included angle between the upper seat body and the lower seat body can be adjusted, a printing component positioned on the upper seat body can be parallel or inclined relative to the horizontal plane, the outer side surface of the paper-plastic packaging box with the printing side surface vertical or inclined relative to the horizontal plane is convenient to print, the paper-plastic packaging box side surface pattern printing unit can be used for paper-plastic packaging boxes with different types of specifications, and the application range of the paper-plastic packaging box side surface pattern printing unit is improved;

(2) The pushing block applies pressure to the upper base body or the printing component in the direction of the paper-plastic packaging box, so that the upper base body is pushed to move to the front end of the printing component or to move to the rear end of the printing component, and after the paper-plastic packaging box side pattern printing unit is arranged on the printing equipment, the distance between the paper-plastic packaging box side pattern printing unit and the paper-plastic packaging box can be finely adjusted (the adjustment range is 0.1-1.0 mm), and therefore paper-plastic packaging boxes with different thicknesses can be printed.

Preferably, the pushing mechanism comprises a driver, a linkage belt and a plurality of pushing pieces, wherein the linkage belt is arranged on the side part of the guide rail and along the length direction of the guide rail, the pushing pieces are equidistantly arranged on the linkage belt, and the driver is used for driving the linkage belt to move so that the pushing pieces push the paper-plastic packaging box to move along the direction of the guide rail.

The pushing mechanism adopts the setting mode, the structure is simple, parts are easy to obtain, the production, installation and later maintenance are convenient, in addition, the speed of the pushing mechanism for pushing the paper plastic packaging box can be adjusted by adjusting the distance between pushing pieces, the difficulty of adjusting the paper plastic packaging box side pattern printing device by production staff is reduced, and the popularization and the use of the paper plastic packaging box side pattern printing device are facilitated.

Preferably, two side pattern printing units are arranged, and the two side pattern printing units are correspondingly arranged on two sides of the guide rail.

Through set up side pattern printing unit respectively in the guide rail both sides, can print simultaneously two lateral surfaces of the paper plastic packaging box on the side pattern printing unit to following the propelling movement of guide rail to satisfy different printing demands, improve the efficiency of printing paper plastic packaging box simultaneously, in addition, because support down pressing device corresponds side pattern printing unit, can share the inboard that supports paper plastic packaging box under the same pressing device when two side pattern printing units print, thereby reduce the setting of spare part, reduction in production cost.

Preferably, the device further comprises a driving assembly, wherein the driving assembly comprises a first synchronous wheel and a plurality of transmission gears; the first synchronous wheel is arranged on the printing roller, the driver is in transmission connection with the first synchronous wheel, and the driver drives the printing roller to rotate through the first synchronous wheel; the printing roller and the printing plate roller are connected through a transmission gear in a transmission way so as to enable the printing plate wheel and the printing wheel to synchronously rotate.

The driving assembly has the following beneficial effects:

(1) The driving assembly has the advantages of simple structure, easily obtained parts, low maintenance cost, good synchronism and stability, high power transmission efficiency and high response speed, and the printing roller and the printing plate roller are in transmission connection by adopting the transmission gear;

(2) The side pattern printing unit is driven by the driver of the pushing mechanism to work, and the side pattern printing unit and the linkage belt share a power source, so that the side pattern printing unit and the linkage belt realize linkage, the coordination of the side pattern printing unit and the linkage belt during movement is ensured, and the working stability of the paper-plastic packaging box is improved;

(3) If two side pattern printing units are arranged, the two side pattern printing units are driven by a driver of the pushing mechanism to work, so that the two side pattern printing units synchronously print two opposite outer side surfaces of the paper-plastic packaging box at the same time, thereby improving the printing effect of the invention.

Preferably, the lower pressing device comprises a rotary table, the rotary table corresponds to a guide rail arranged on the side surface pattern printing unit, and a lower pressing part for pressing the inner side surface of the paper-plastic packaging box is arranged on the rotary table.

The lower pressing device is simple in structure and easy to obtain parts, the turntable is arranged on the guide rail corresponding to the side pattern printing unit, when the paper-plastic packaging box moves to the position of the side pattern printing unit along the guide rail, the lower pressing part is arranged on the inner side surface of the paper-plastic packaging box, the support is provided for the paper-plastic packaging box, the structural strength of the paper-plastic packaging box is improved, the side pattern printing unit is convenient for pattern printing on the outer side surface of the fixed paper-plastic packaging box, and the paper-plastic packaging box can be prevented from being deformed when being subjected to the pressure applied by the printing of the side pattern printing unit, so that the structure of the paper-plastic packaging box and the pattern printed on the paper-plastic packaging box are influenced.

Preferably, the lower pressing device further comprises a turntable synchronizing wheel, the turntable is vertical to the guide rail, and can axially rotate in the pushing direction of the pushing mechanism, the turntable synchronizing wheel is connected with the turntable, the driver is in transmission connection with the turntable synchronizing wheel, and the driver drives the turntable to rotate through the turntable synchronizing wheel.

In the above arrangement, the turntable can rotate relative to the guide rail, so that when the paper-plastic packaging box enters the position of the lower pressing device, the turntable moves relative to the paper-plastic packaging box, so that resistance generated by the movement of the turntable to the paper-plastic packaging box is reduced, in addition, when the side pattern printing unit contacts with the paper-plastic packaging box and prints patterns, the printing end of the printing unit rotates relatively, the printing end of the printing unit applies force to the inner side of the paper-plastic packaging box and the direction of the guide rail conveying, when the turntable can axially rotate in the direction of the pushing mechanism, the turntable applies force to the outer side of the paper-plastic packaging box and the direction of the guide rail conveying to the paper-plastic packaging box, the turntable and the printing end of the side pattern printing unit move synchronously, so that the resultant force directions of the inner side and outer sides of the paper-plastic packaging box are directed to the pushing direction of the pushing mechanism, the side pattern printing unit and the turntable jointly play a role in boosting the paper-plastic packaging box, and the problem that the resultant force directions of the side pattern printing unit and the pushing mechanism are different in the paper-plastic packaging box in the printing process, and the paper-plastic packaging box are prevented from influencing the qualified rate of the turntable, is avoided.

Preferably, the outer side surface of the rotary table is provided with a plurality of supporting plates, and the plurality of supporting plates form the lower pressing part; the arrangement mode is convenient for production personnel to set and adjust the number of the supporting plates according to the pushing interval time of the pushing mechanism, and under the condition that the turntable can provide support for the inner side of the paper-plastic packaging box when the side pattern printing unit prints the outer side of the paper-plastic packaging box, the production personnel can reduce the number of the supporting plates as much as possible, the production cost is reduced, meanwhile, the weight of the turntable is reduced, the load of a driver is reduced, and the energy is saved; in addition, the supporting plate is fan-shaped, so that stability of the turntable during rotation can be effectively considered, and the supporting plate has enough effective area to provide support for the inner side of the paper-plastic packaging box.

Preferably, the upper pressing device is used for limiting the moving range of the upper part of the paper-plastic packaging box on the guide rail; the upper pressing device comprises a mounting bracket and a pressing block, and the pressing block is arranged above the lower pressing device through the mounting bracket.

The upper propping device is arranged to be matched with the lower propping device, so that the upper part and the lower part of the paper-plastic packaging box entering the printing station of the side pattern printing unit are jointly fixed, the paper-plastic packaging box is prevented from shifting in the printing process, the printing effect is affected, the product qualification rate is effectively improved, and the production efficiency of the printed paper-plastic packaging box is ensured.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic view of a transport mechanism and a pushing mechanism;

FIG. 3 is a schematic view of an upper pressing device, a side pattern printing unit, and a lower pressing device;

FIG. 4 is a schematic view of a side pattern printing unit and a lower pressing device;

FIG. 5 is a schematic view of an upper pressing device;

FIG. 6 is a first angular schematic view of a side pattern printing unit;

FIG. 7 is a second angular schematic view of a side pattern printing unit;

FIG. 8 is a third angular schematic view of a side pattern printing unit;

FIG. 9 is a fourth angular schematic view of a side pattern printing unit;

FIG. 10 is a fifth angular schematic view of a side pattern printing unit;

FIG. 11 is a schematic diagram of an assembly of a second ink distribution roller, a transmission member, and a guide member;

FIG. 12 is a first cross-sectional view of a side pattern printing unit;

FIG. 13 is a second cross-sectional view of the side pattern printing unit;

FIG. 14 is another angular cross-sectional view of a side pattern printing unit;

FIG. 15 is a first state diagram of the printing assembly;

FIG. 16 is a second state diagram of the printing assembly;

FIG. 17 is a third state diagram of the printing assembly;

FIG. 18 is a schematic diagram of a second embodiment;

FIG. 19 is a first angular schematic view of embodiment three;

FIG. 20 is a first angular schematic view of embodiment three;

fig. 21 is a schematic illustration of a pattern printed on a printing roll by a pattern plate on two printing roll.

Description of the reference numerals:

1 side pattern printing unit, 10 frame, 11 guide rail, 113 linkage belt, 114 pushing piece, 12 lower pressing device, 121 turntable, 122 lower pressing part, 123 turntable synchronizing wheel, 124 supporting plate, 13 upper pressing device, 132 mounting plate, 133 screw rod, 134 guide rail, 135 pressing block, 136 avoiding part, 14 mounting rod, 15 clearance hole, 16 third synchronizing wheel, 2 mounting seat, 20 avoiding hole, 21 upper seat, 22 lower seat, 23 front side sliding groove, 24 rear side sliding groove, 25 sliding connection piece, 26 first locking piece, 27 positioning block, 28 pushing piece, 29 pushing piece, 3 ink supply mechanism, 31 upper ink box, 311 ink adding port, 312 ink outlet channel, 32 sealing cover, 33 ink adjusting piece, 34 ink connecting roller, 341 first ink connecting roller, 342 second ink connecting roller, 343 third ink connecting roller, 344 fourth ink connecting roller, 345 fifth ink connecting roller, 35 ink connecting roller, 351 first ink homogenizing roller, 352 second ink distributing roller, 36 ink licking mechanism, 361 ink licking roller, 362 second rotating shaft, 363 first connecting arm, 364 second connecting arm, 365 cam, 4 printing plate roller, 41 pattern printing plate, 42 adjusting wheel, 43 second mounting frame, 5 printing roller, 51 printing block, 52 first mounting frame, 60 first eccentric shaft, 61 first rotating shaft, 62 first linkage, 63 first elastic member, 64 first ejector member, 641 first ejector rod, 65 second linkage, 66 fixed shaft, 67 first synchronizing wheel, 68 driving gear, 69 main driving shaft, 7 third mounting frame, 71 ejector rod, 72 first adjusting member, 73 second elastic member, 74 second ejector member, 741 second ejector rod, 75 second synchronizing wheel, 76 fixed frame, 77 fixing portion, 770 adjusting chute, 78 sliding portion, 79 second locking member, 81 driving member, 82 guiding member, 820 curve track, 83 mounting portion, 84 swinging portion.

Detailed Description

Embodiments of the present invention are described below with reference to the accompanying drawings:

example 1

Referring to fig. 1 to 5 and 6, the paper-plastic packing box side pattern printing device of the present embodiment includes a frame 10, a conveying device, a side pattern printing unit 1, a lower pressing device 12 and an upper pressing device 13; the conveying device, the side pattern printing unit 1, the lower pressing device 12 and the upper pressing device 13 are arranged on the frame 10; the conveying device comprises a guide rail 11 and a pushing mechanism, wherein the pushing mechanism is used for pushing the paper-plastic packaging box to the side pattern printing unit 1 along the guide rail 11; the lower pressing device 12 is arranged on the guide rail 11 corresponding to the side pattern printing unit 1 and is used for pressing the inner side of the paper-plastic packaging box; the side pattern printing unit 1 is arranged on a guide rail 11, the side pattern printing unit 1 comprises an ink supply mechanism 3 and a printing assembly, and the ink supply mechanism 3 is used for supplying ink to the printing assembly; the printing component is provided with a pattern printing plate 41, the pattern printing plate 41 can be attached with ink to form a printing pattern, the printing component can be contacted with the outer side of the paper-plastic packaging box, and the lower pressing device 12 is matched with the printing component to print the printing pattern on the outer side of the paper-plastic packaging box.

The pushing mechanism comprises a driver (not shown in the figure), a linkage belt 113 and a plurality of pushing pieces 114, wherein the linkage belt 113 is arranged on the side part of the guide rail 11 and along the length direction of the guide rail 11, the pushing pieces 114 are equidistantly arranged on the linkage belt 113, and the driver is used for driving the linkage belt 113 to move so that the pushing pieces 114 push the paper-plastic packaging box to move along the direction of the guide rail 11.

The pushing mechanism adopts the setting mode, and simple structure, spare part is easily obtained, is convenient for production installation and later maintenance, in addition, through the interval of adjustment pushing piece 114, can adjust the speed that pushing mechanism pushed the packing carton is moulded to paper, reduces the degree of difficulty that the packing carton side pattern printing device was moulded to production personnel adjustment paper to be convenient for the popularization and the use of packing carton side pattern printing device are moulded to paper.

The upper pressing device 13 is used for limiting the moving range of the upper part of the paper-plastic packaging box on the guide rail 11; the upper pressing device 13 comprises a mounting bracket and a pressing block 135, and the pressing block 135 is arranged above the lower pressing device 12 through the mounting bracket.

Specifically, the mounting bracket comprises two mounting plates 132, the two mounting plates 132 are oppositely arranged at two outer sides of the frame 10, a screw rod 133 and a sliding rail 134 are arranged between the two mounting plates 132, the pressing block 135 is slidably connected with the mounting plates 132 through the screw rod 133 and the sliding rail 134, the pressing block 135 is in threaded connection with the screw rod 133, and the distance between the pressing block 135 and the two mounting plates 132 is adjustable in such a way that the position of the pressing block 135 can be conveniently adjusted by production personnel according to actual production requirements; the pressing block 135 is in an inverted T shape, the lower part of the pressing block 135 abuts against the upper part of the paper-plastic packaging box, and the pressing block 135 is provided with an avoidance part 136 corresponding to the side pattern printing unit 1.

The upper propping device 13 is arranged to cooperate with the lower propping device 12 to jointly fix the upper part and the lower part of the paper-plastic packaging box entering the printing station of the side pattern printing unit 1, so that the deviation of the paper-plastic packaging box in the printing process is avoided, the printing effect is influenced, the product qualification rate is effectively improved, and the production efficiency of the printed paper-plastic packaging box is ensured.

The lower pressing device 12 comprises a rotary table 121, the rotary table 121 is arranged on a guide rail 11 corresponding to the side pattern printing unit 1, and a lower pressing part 122 for pressing the inner side surface of the paper-plastic packaging box is arranged on the rotary table 121.

The lower pressing device 12 is simple in structure and easy to obtain parts, the turntable 121 corresponds to the guide rail 11 arranged on the side pattern printing unit 1, when the paper plastic packaging box moves to the position of the side pattern printing unit 1 along the guide rail 11, the inner side surface of the paper plastic packaging box is pressed by the lower pressing part 122, the support is provided for the paper plastic packaging box, the structural strength of the paper plastic packaging box is improved, the pattern printing of the outer side surface of the fixed paper plastic packaging box by the side pattern printing unit 1 is facilitated, and the deformation of the paper plastic packaging box caused by the pressure applied by the printing of the side pattern printing unit 1 can be avoided, so that the structure of the paper plastic packaging box and the pattern printed on the paper plastic packaging box are influenced.

The turntable 121 may be fixed relative to the guide rail 11, and the turntable 121 may be rotatably disposed on the guide rail 11.

As an improvement of the arrangement mode of the turntable 121: the lower pressing device 12 further comprises a turntable synchronizing wheel 123, the turntable 121 is perpendicular to the guide rail 11, and is axially rotatably arranged on the guide rail 11 in the pushing direction of the pushing mechanism, the turntable synchronizing wheel 123 is connected with the turntable 121, the driver is in transmission connection with the turntable synchronizing wheel 123, and the driver drives the turntable 121 to rotate through the turntable synchronizing wheel 123.

In the above arrangement, the rotating disc 121 may rotate relative to the guide rail 11, so that when the paper-plastic packaging box enters into the position of the lower pressing device 12, the rotating disc 121 moves relative to the paper-plastic packaging box, so as to reduce the resistance generated by the rotating disc 121 to the movement of the paper-plastic packaging box, in addition, when the side pattern printing unit 1 contacts with the paper-plastic packaging box and prints a pattern, the printing end of the printing unit rotates relatively, the printing end of the printing unit applies a force to the inner side of the paper-plastic packaging box and the conveying direction of the guide rail 11 to the paper-plastic packaging box, when the rotating disc 121 rotates axially in the pushing direction of the pushing mechanism, the rotating disc 121 applies a force to the outer side of the paper-plastic packaging box and the conveying direction of the guide rail 11 to the paper-plastic packaging box, the rotating disc 121 and the printing end of the side pattern printing unit 1 have synchronism, so that the resultant force direction of the external force applied to the paper-plastic packaging box is directed to the pushing direction of the pushing mechanism, the side pattern printing unit 1 and the rotating disc 121 are ensured to jointly perform the function of boosting the paper-plastic packaging box, and the paper-plastic packaging box is prevented from being affected by the resultant force of the side pattern printing unit 1 and the direction of the rotating disc 121 and the direction of the pushing mechanism from different directions to the paper-plastic packaging box in the printing process.

The outer side surface of the turntable 121 is provided with a plurality of supporting plates 124, and the plurality of supporting plates 124 form the lower pressing part 122; the arrangement mode is convenient for production personnel to set and adjust the number of the supporting plates 124 according to the pushing interval time of the pushing mechanism, and under the condition that the turntable 121 can provide support for the inner side of the paper-plastic packaging box when the side pattern printing unit 1 prints the outer side of the paper-plastic packaging box, the production personnel can reduce the number of the supporting plates 124 as much as possible, the production cost is reduced, meanwhile, the weight of the turntable 121 is reduced, the load of a driver is reduced, and the energy is saved; in addition, the supporting plate 124 has a fan shape, which can effectively give consideration to the stability of the turntable 121 when rotating, and has a sufficient effective area to provide support for the inner side of the paper-plastic packing box.

Referring to fig. 6 to 17, the paper plastic packing box side pattern printing unit 1 further includes a mounting base 2, the mounting base 2 is disposed at a side of the guide rail 11, and the ink supply mechanism 3 and the printing assembly are disposed on the mounting base 2.

The printing assembly comprises a printing plate roller 4 and a printing roller 5, and the printing plate roller 4 and the printing roller 5 are axially and rotatably arranged on the mounting seat 2; the pattern printing plate 41 is arranged outside the printing plate roller 4, a printing block 51 is arranged outside the printing roller 5, the printing block 51 is in rolling contact with the pattern printing plate 41, a pattern is formed on the printing block 51, and the printing block 51 can print the pattern on a paper-plastic packaging box.

Specifically, the pattern printing plate 41 is an offset printing plate with a relief pattern engraved on the surface, and the printing block 44 is a planar offset printing plate; the pattern plate 41 is detachably disposed outside the plate roller 4, and the printing block 51 is detachably disposed outside the printing roller 5.

In this embodiment, the length of the content of the printed pattern is not greater than the length of the outside of the paper-plastic package, and when the length of the content of the printed pattern to be printed is smaller than the length of the outside of the paper-plastic package, the length of the pattern plate 41 is smaller than the outer circumference of the plate roller 4, and since the printing block 51 is provided corresponding to the pattern plate 41, the length of the printing block 51 is also smaller than the outer circumference of the printing roller 5, and therefore, the portion of the plate roller 4 not covered with the pattern plate 41 is not in contact with the printing block 51 nor with the printing roller 5.

Specifically, the plate roller 4 is provided with an adjusting wheel 42, the adjusting wheel 42 is coaxially connected with the plate roller 4, the plate roller 4 can be rotated by rotating the adjusting wheel 42, and the position of the printed pattern on the pattern plate 41 relative to the printing block 51 is adjusted, so that after different pattern plates 41 are replaced, the pattern plate 41 can be adjusted according to actual production requirements, and the printing effect is ensured; in addition, by rotating the platen roller 4 to a predetermined position, the printed pattern on the pattern platen 41 can be prevented from contacting the print block 51, thereby preventing the print block 51 from crushing the pattern platen 41 at the time of stoppage.

The printing assembly adopts the beneficial effects of the setting mode that: since the embossing convex surface and the embossing concave surface are arranged on the pattern printing plate 41, the embossing convex surface is attached with ink to form a printing pattern, on one hand, after the pattern printing plate 41 is attached with ink, the uneven distribution of the ink on different positions is caused by the different heights of the embossing convex surfaces on different positions, if the pattern printing plate 41 is directly contacted with a paper-plastic packaging box to print the pattern, the local position of the printing pattern is easy to generate chromatic aberration, and on the other hand, if the embossing convex surface is directly contacted with the paper-plastic packaging box, the embossing convex surface can leave embossing on the surface of the paper-plastic packaging box to lead the paper-plastic packaging box to deform, and the integral design of the paper-plastic packaging box is influenced; the printing block 51 is arranged on the printing roller 5, so that the printing pattern is attached to the printing block 51, and the printing block 51 is contacted with the paper-plastic packaging box and then prints the printing pattern on the paper-plastic packaging box, thereby effectively avoiding the color difference of the local position of the printing pattern and further improving the aesthetic property of the paper-plastic packaging box after the printing pattern; the printing roller 5 rotates relatively, when the side pattern printing unit 1 contacts with the paper-plastic packaging box and prints patterns, the external force applied to the outer side of the paper-plastic packaging box can point to the material transportation direction, and the paper-plastic packaging box is prevented from being damaged due to the fact that the force applied by the side pattern printing unit 1 is different from the material transportation direction in the printing process.

The printing assembly further comprises a first mounting frame 52 and a second mounting frame 43, the printing roller 5 is arranged on the first mounting frame 52, the printing plate roller 4 is arranged on the second mounting frame 43, the first mounting frame 52 is connected with the front end of the second mounting frame 43, the first mounting frame 52 is connected with the rear end of the second mounting frame 43 through a first interval adjusting mechanism, and the first interval adjusting mechanism is used for adjusting the relative position between the first mounting frame 52 and the second mounting frame 43; the first interval adjusting mechanism comprises a first eccentric shaft 60, a first rotating shaft 61 and a first linkage piece 62, the first eccentric shaft 60 is arranged at the rear end of the first mounting frame 52, the first rotating shaft 61 is arranged at the rear end of the second mounting frame 43, and the first eccentric shaft 60 and the first rotating shaft 61 are connected through the first linkage piece 62; the center of the first eccentric shaft 60 is near the rear end of the first mounting bracket 52.

Referring to fig. 16, the front ends of the first mounting frame 52 and the second mounting frame 43 are fixedly connected through a second linkage member 65 and a fixed shaft 66, the fixed shaft 66 is fixedly arranged at the front end of the second mounting frame 43, one end of the second linkage member 65 is connected with the first mounting frame 52, the middle part is connected with the fixed shaft 66, and the other end is connected with the second mounting frame 43.

Working principle of first interval adjusting mechanism: when the axis of the first eccentric shaft 60 is close to the rear end of the first mounting frame 52 and the axis of the first eccentric shaft 60 is offset towards the middle of the first mounting frame 52, the first eccentric shaft 60 pushes the first rotating shaft 61 to offset towards the rear end of the first mounting frame 52 through the first linkage piece 62, so that the second mounting frame 43 moves towards the rear end of the first mounting frame 52, the axial distance between the printing roller 5 and the printing plate roller 4 is shortened, the contact point of the pattern printing plate 41 and the printing block 51 moves backwards relative to the printing plate roller 4, and when the pattern printing plate 41 contacts the printing block 51, the pressure of the pattern printing plate 41 on the printing block 51 is increased.

Specifically, the first interval adjusting mechanism further includes a first elastic member 63, the first elastic member 63 is disposed at the rear end of the first mounting frame 52, the first elastic member 63 is linked with the first eccentric shaft 60, the first elastic member 63 is used for applying a tensile force to the middle of the rear end of the first mounting frame 52 to the first eccentric shaft 60, the first elastic member 63 pulls the first eccentric shaft 60 to rotate, so that the second mounting frame 43 is offset to the rear of the first mounting frame 52, and the distance between the plate printing roller 4 and the printing roller 5 is shortened.

Through setting up first interval adjustment mechanism, the production personnel of being convenient for finely tune (the adjustment scope is 0.1-1.0 mm) the relative distance between printing plate roller 4 and the printing roller 5 according to actual production needs, can avoid the too little distance between printing plate roller 4 and the printing roller 5, lead to the pattern printing plate 41 to appear too big deformation, lead to the printing pattern to warp, and printing plate roller 4, printing roller 5 can not normally rotate, also can avoid too big distance between printing plate roller 4 and the printing roller 5, pattern printing plate 41 can't contact with printing piece 51, thereby guarantee that the printing pattern on the pattern printing plate 41 can adhere to on printing piece 51, ensure the printing effect of paper-plastic packaging box side pattern printing unit 1.

Referring to fig. 17, the first spacing adjustment mechanism further includes a first safety assembly, the first safety assembly includes a first ejector member 64, the first ejector member 64 is disposed on the first mounting frame 52, the telescopic end of the first ejector member is coupled with the first eccentric shaft 60, and the first ejector member 64 is configured to push the axle center of the first eccentric shaft 60 to deviate toward the second mounting frame 43.

Specifically, the first safety assembly further includes a first ejector rod 641, the first ejector rod 641 is disposed on the first eccentric shaft 60, and the telescopic end of the first ejector member 64 is linked with the first ejector rod 641; one end of the first elastic member 63 is connected to the first ejector 641, and the other end is fixedly connected to the first mounting frame 52.

Through setting up first safety component on first interval adjustment mechanism, when first ejector member 64 starts, the expansion end extension of first ejector member 64, the axle center rotation of first eccentric shaft 60 is promoted to first ejector member 64, first eccentric shaft 60 rotation makes the second mounting bracket 43 that is connected with first pivot 61 move to the front end, make printing plate roller 4 and printing roller 5 break away from the contact, the unable adhesion of printing pattern is on printing piece 51, thereby avoid the printing pattern printing to the paper plastic packaging box on, avoid the material extravagant, and avoid attaching the printing pattern on the printing piece 51, the production personnel of being convenient for washs printing piece 51.

The ink supply mechanism 3 comprises an upper ink box 31, an ink receiving roller 34 and an ink homogenizing roller 35, wherein the ink receiving roller 34 and the ink homogenizing roller 35 are provided with a plurality of ink homogenizing rollers 35, and the ink homogenizing roller 35 can rotate up and down in a reciprocating manner; the upper ink box 31 is used for storing ink, and an ink outlet (not shown in the figure) is arranged on the upper ink box 31; the ink receiving roller 34 is used for receiving the ink flowing out of the ink box 31 and transferring the ink to the ink homogenizing roller 35 or the printing plate roller 4 or the other ink receiving roller 34, and the ink homogenizing roller 35 is used for homogenizing the ink and transferring the ink to the ink receiving roller 34 so as to uniformly distribute the ink on the outer side surface of the ink receiving roller 34.

Specifically, an ink filling port 311 is provided at the upper end of the upper ink box 31, a cover 32 is provided on the ink filling port 311, an air valve (not shown in the figure) is provided on the cover 32, and the air speed entering the upper ink box 31 can be adjusted by adjusting the air valve, so as to control the air pressure in the upper ink box 31, and further control the ink outlet amount of the upper ink box 31; the lower end of the upper ink box 31 is provided with an ink outlet channel 312, the ink outlet is arranged on the ink outlet channel 312, and the ink outlet channel 312 is provided with an ink regulating component; the ink regulating assembly comprises an ink regulating piece 33, wherein the ink regulating piece 33 is inserted into the ink outlet channel 312, and the ink regulating piece 33 is in threaded connection with the ink outlet channel 312; the size of the aperture of the ink passing through the ink outlet channel 312 is adjusted by adjusting the length of the ink adjusting member 33 inserted into the ink outlet channel 312. As an improvement, two ink adjusting members 33 are provided, the two ink adjusting members 33 are adjacently arranged along the length direction of the ink outlet channel 312, and by arranging the two ink adjusting members 33, the ink outlet amount of the ink outlet channel 312 can be secondarily adjusted, so that the ink outlet amount of the upper ink box 31 is accurately controlled, the production cost is reduced, and the time consumption for cleaning equipment is reduced.

Specifically, the ink receiving roller 34 may be a metal roller, or the ink receiving roller 34 may be a roller coated with a rubber plate on the outer side; the ink distributing roller 35 is a self-stringing roller (rotating while automatically reciprocating up and down) or a roller driven by an external force to reciprocate up and down.

Referring to fig. 14, in this embodiment, two ink distributing rollers 35 are provided, namely, a first ink distributing roller 351 and a second ink distributing roller 352, five ink receiving rollers 34 are provided, namely, a first ink receiving roller 341, a second ink receiving roller 342, a third ink receiving roller 343, a fourth ink receiving roller 344 and a fifth ink receiving roller 345, from right to left in the drawing, wherein the first ink receiving roller 341 is used for receiving the ink output by the upper ink box 31, and the fifth ink receiving roller 345 is used for providing the ink for the plate roller 4; the first ink distributing roller 351 is located between the second ink receiving roller 342 and the third ink receiving roller 343; the second ink distributing roller 352 is located between the third ink receiving roller 343 and the fourth ink receiving roller 344, the first ink receiving roller 341 and the second ink receiving roller 342 are in rolling contact, and the fourth ink receiving roller 344 is disposed adjacent to the fifth ink receiving roller 345 and is in rolling contact with the second ink distributing roller 352, respectively.

The first ink distributing roller 351 is a self-oscillating roller, and the second ink distributing roller 352 is a roller driven by an external force to reciprocate up and down.

The ink supply mechanism 3 has the following beneficial effects by adopting the arrangement mode:

(1) The ink receiving rollers 34 are arranged to transfer the ink flowing out of the ink feeding box 31 to the printing plate roller 4, so that the limitation of the distance between the ink feeding box 31 and the printing plate roller 4 is relieved, a producer can ensure that the ink feeding box 31 inks the printing plate roller 4 only by adjusting the number of the ink receiving rollers 34 after arranging the positions of the ink feeding box 31 and the printing plate roller 4 according to the internal space of the printing equipment, and in addition, the arrangement mode can design the printing plate roller 4 to be smaller, so that the space occupied by the pattern printing unit 1 on the side surface of the paper-plastic packaging box is reduced;

(2) The ink distributing roller 35 is contacted with the ink receiving roller 34 attached with ink, the ink distributing roller 35 enables the ink to be uniformly attached to the outer surface of the ink distributing roller 35 through up-and-down reciprocating rotation, the ink distributing roller 35 is contacted with the ink receiving roller 34 without the attached ink, the ink on the outer surface of the ink distributing roller 35 is uniformly attached to the outer surface of the ink receiving roller 34 through up-and-down reciprocating rotation, the ink flowing out of the ink feeding box 31 is uniformly mixed through the arrangement of the ink distributing roller 35, the ink is transferred to the ink receiving roller 34, so that the ink on the outer side surface of the ink receiving roller 34 is uniformly distributed, the condition that the ink is too much at a single position on the ink receiving roller 34 is reduced, the situation that partial raised convex surfaces on the pattern printing plate 41 are not attached with ink due to the uneven distribution of the ink is avoided, printing patterns are incomplete, the difference of the quantity of the ink attached to the raised convex surfaces at different positions is large, the color difference of the printing patterns is caused, and the printing effect is effectively improved.

The ink supply mechanism 3 further includes an ink licking mechanism 36, the ink licking mechanism 36 being disposed between the upper ink tank 31 and the ink receiving roller 34, the ink licking mechanism 36 including an ink licking roller 361, a second rotation shaft 362, and a cam 365; the second rotating shaft 362 is provided with a first reset member (not shown in the figure), a first connecting arm 363 and a second connecting arm 364, the licking roller 361 is disposed corresponding to the ink outlet, and is disposed on the second rotating shaft 362 through the first connecting arm 363, the second connecting arm 364 abuts against the outer side of the cam 365, and the first reset member is used for resetting the second rotating shaft 362; when the cam 365 moves, the second rotating shaft 362 rotates to make the licking roller 361 reciprocate between the upper ink box 31 and the ink receiving roller 34, and the ink flowing out from the ink outlet is adhered and transferred to the ink receiving roller 34.

The ink licking mechanism 36 has the advantages of simplified structure, small number of parts, convenient installation and disassembly, easy replacement of vulnerable parts, and effective control of the quantity of ink transferred between the ink receiving rollers 34 by driving the ink licking roller 361 to reciprocate between the upper ink box 31 and the ink receiving rollers 34 through the cam 365, high response speed, strong reliability, ink consumption saving and production cost reduction.

The device also comprises a driving assembly, wherein the driving assembly comprises a first synchronous wheel 67 and a plurality of transmission gears 68; the first synchronizing wheel 67 is arranged on the printing roller 5, and an external driver (not shown in the figure) is in transmission connection with the first synchronizing wheel 67, and drives the printing roller 5 to rotate through the first synchronizing wheel 67; the printing roller 5 and the printing plate roller 4 are in transmission connection through the transmission gear 68, the printing plate roller 4 is in transmission connection with the corresponding ink receiving roller 34 through the transmission gear 68, and the adjacent ink receiving rollers 34 are in transmission connection or rolling contact through the transmission gear 68; the ink distribution roller 35 is in driving connection or rolling contact with the adjacent ink receiving roller 34 through the transmission gear 68.

Specifically, the driving assembly further comprises a second synchronizing wheel 75 and a third synchronizing wheel 16, the second synchronizing wheel 75 is arranged on the first mounting frame 52 through a fixing frame 76, and the second synchronizing wheel 75 is perpendicular to the side surface of the fixing frame 76 and is axially and rotatably arranged on the fixing frame 76; the fixing frame 76 includes a fixing portion 77 and a sliding portion 78, the fixing portion 77 is vertically disposed on the first mounting frame 52, an adjusting chute 770 parallel to the upper end surface of the first mounting frame 52 is disposed on the fixing portion 77, the sliding portion 78 is slidably disposed on the fixing portion 77 along the adjusting chute 770, a second locking member 79 capable of being inserted into the adjusting chute 770 is disposed on the sliding portion 78, and the sliding portion 78 is fixed on the adjusting chute 770 by tightening the adjusting second locking member 79; the third synchronizing wheel 16 is rotatably arranged on the mounting plate 132 through the mounting rod 14 (a bearing is arranged between the third synchronizing wheel 16 and the mounting rod 14), and a driving belt (not shown in the figure) of the driver is in transmission connection with the first synchronizing wheel 67 after passing through the third synchronizing wheel 16 and the second synchronizing wheel 75; the pressing block 135 is provided with a clearance hole 15 for the mounting rod 14 to pass through.

The driving assembly has the advantages of simple structure, easily obtained parts, low maintenance cost, good synchronism and stability, high power transmission efficiency and high response speed, and the printing roller 5, the printing plate roller 4 and the ink receiving roller 34 are in transmission connection by adopting the transmission gear 68; the ink distributing roller 35 is in transmission connection or rolling contact with the adjacent ink receiving roller 34 through the transmission gear 68, the ink distributing roller 35 is driven to rotate through transmission of the transmission gear 68 or by means of friction force generated by contact with the ink receiving roller 34, so that the synchronism of the movement of the ink distributing roller 35 and the movement of the ink receiving roller 34 is ensured, in addition, the ink distributing roller 35 is in rolling contact with the ink receiving roller 34, the pressure can be applied to the surface of the ink receiving roller 34 by the ink distributing roller 35, and the ink on the ink receiving roller 34 is uniformly spread on the surface of the ink receiving roller 34.

In addition, since the side pattern printing unit 1 is driven to work by the driver of the pushing mechanism, the side pattern printing unit 1, the linkage belt 113 and the lower pressing device 12 share one power source, so that the linkage of the side pattern printing unit 1, the linkage belt 113 and the lower pressing device 12 is realized, the coordination of the side pattern printing unit 1, the linkage belt 113 and the lower pressing device 12 during movement is ensured, and the working stability of the paper-plastic packaging box is improved.

The ink supply mechanism 3 further comprises a third mounting frame 7, the third mounting frame 7 is connected with the second mounting frame 43, a pushing block 71 is arranged on the third mounting frame 7, and the pushing block 71 is positioned between the projection point of the printing plate roller 4 on the second mounting frame 43 and the projection point of the ink receiving roller 34 for providing ink for the printing plate roller 4 on the third mounting frame 7; a second interval adjusting mechanism is arranged between the third mounting frame 7 and the second mounting frame 43, the second interval adjusting mechanism comprises a first adjusting piece 72 and a second elastic piece 73, the first adjusting piece 72 is linked with the ink receiving roller 34 for providing ink for the plate printing roller 4, and the telescopic end of the first adjusting piece 72 is propped against the push block 71; the second elastic member 73 has one end connected to the third mounting frame 7 and the other end connected to the ink receiving roller 34 for supplying ink to the cliche roller 4, and applies pressure to the ink receiving roller 34 in a direction toward the cliche roller 4.

The driving assembly further comprises a main driving shaft 69, the main driving shaft 69 is provided with a rotatable driving gear 68, the main driving shaft 69 is arranged on the side part of the ink receiving roller 34 for providing ink for the printing plate roller 4, one end of the main driving shaft 69 is in driving connection with the printing roller 5, the other end of the main driving shaft 69 is in driving connection with the ink receiving roller 34 provided with the driving gear 68, and the pushing block 71 is arranged at the upper end of the main driving shaft 69.

In the above arrangement, the second elastic member 73 applies pressure to the ink receiving roller 34 for supplying ink to the platen roller 4 in a direction toward the platen roller 4, so that the ink receiving roller 34 is in rolling contact with the platen roller 4, and the ink receiving roller 34 rotates to supply ink to the platen roller 4; when the telescopic end of the first adjusting member 72 is extended, the ink receiving roller 34 for providing ink for the printing plate roller 4 moves towards the direction of the opposite pushing block 71, so that a producer can conveniently adjust the relative distance between the ink receiving roller 34 and the printing plate roller 4 according to actual production requirements, the situation that the distance between the ink receiving roller 34 and the printing roller 5 is too large or too small to influence the coloring effect on the pattern printing plate 41 is avoided, and the printing effect of the paper-plastic packaging box side pattern printing unit 1 is ensured.

The ejector block 71 is horizontally rotatably arranged on the third mounting frame 7, a second reset piece (not shown in the figure) for resetting the ejector block 71 is arranged on the third mounting frame 7, and the distances from the midpoints of two adjacent side surfaces of the ejector block 71 to the rotation axis are different; the second spacing adjustment mechanism further includes a second safety assembly including a second ejector 74, the second ejector 74 being disposed on the second mounting frame 43 with its telescoping end in linkage with the ejector block 71.

Specifically, the second safety assembly further includes a second ejector rod 741, the second ejector rod 741 is fixedly disposed at the upper end of the ejector block 71, and the telescopic end of the second ejector 74 is connected to the second ejector rod 741.

Through setting up the second safety assembly on second interval adjustment mechanism, when second ejector part 74 starts, the flexible end extension of second ejector part 74, second ejector part 74 promotes ejector block 71 rotation, ejector block 71 rotation makes with the different sides of first regulating part 72 ejector block 71, when first regulating part 72 ejector block middle part keeps away from the side of ejector block 71 rotation axle center relatively, the ink receiving roller 34 that is connected with first regulating part 72 moves to the direction of keeping away from seal plate roller 4, make this ink receiving roller 34 break away from with seal plate roller 4's contact, the printing ink can't adhere to on the pattern seal plate 41, avoid equipment shut down time, printing ink adheres to on pattern seal plate 41, the production personnel of being convenient for washs pattern seal plate 41.

Specifically, referring to fig. 10 and 11, the third mounting frame 7 is provided with a transmission member 81 and a guide member 82, the guide member 82 is rotatably disposed at the outer side of the third mounting frame 7 corresponding to the cam 365, the axis of the cam 365 is connected with the axis of the guide member 82, the guide member 82 is provided with a curved track 820, and the curved track 820 is annularly disposed at the outer periphery of the guide member 82; the transmission member 81 includes a mounting portion 83 and a swinging portion 84, the mounting portion 83 is disposed outside the third mounting frame 7, the swinging portion 84 is rotatably disposed on the mounting portion 83, one end of the swinging portion 84 is movably inserted into the curved track 820, and the other end is connected to a portion of the second ink distributing roller 352 located outside the third mounting frame 7; when the cam 365 moves, the guide 82 is driven to rotate, the guide 82 rotates and drives the swinging part 84 to swing, and the swinging part 84 drives the second ink distributing roller 352 to reciprocate up and down.

The mounting seat 2 comprises an upper seat body 21 and a lower seat body 22, the ink supply mechanism 3 and the printing assembly are arranged on the upper seat body 21, the upper seat body 21 is arranged on the lower seat body 22, the front end of the upper seat body 21 is connected with the front end of the lower seat body 22, and the rear end of the upper seat body 21 is respectively and movably connected with the rear end of the lower seat body 22; an included angle adjusting mechanism is arranged between the upper seat body 21 and the lower seat body 22 and comprises a front side chute 23, a rear side chute 24, a sliding connecting piece 25, a first locking piece 26, a positioning piece 27, a push block adjusting piece 28 and a push block 29; the front side chute 23 and the rear side chute 24 are respectively arranged at the front side and the rear side of the lower seat body 22, the front end of the front side chute 23 is inclined towards the lower end of the lower seat body 22, and the rear side chute 24 is vertical to the upper end surface of the lower seat body 22; the front side of the upper seat body 21 is connected with the front side chute 23 through a sliding connecting piece 25, and the rear side thereof is connected with the rear side chute 24 through a first locking piece 26; the positioning block 27 is arranged on the lower seat body 22, the push block adjusting piece 28 penetrates through the positioning block 27, and the push block adjusting piece 28 is in threaded connection with the positioning block 27; the push block 29 is slidably arranged on the lower base 22, one end of the guide rail 11 of the push block 29 is provided with an inclined plane inclined to the guide rail 11, the top point of the inclined plane of the push block 29 abuts against the upper base 21 or the printing assembly, and the position of the push block 29 relative to the lower base 22 is adjusted to enable the top point of the inclined plane of the push block 29 to abut against the corresponding position of the upper base 21 or the printing assembly, so that the inclination angle of the printing assembly is adjusted; the push block adjusting member 28 penetrates through one end of the positioning block 27 and is connected with the push block 29.

Specifically, in this embodiment, an avoidance hole 20 is provided in the middle of the upper end surface of the upper seat body 21, and the inclined surface of the push block 29 extends through the avoidance hole 20 to abut against the lower part of the printing assembly.

The above-mentioned mount pad 2 adopts the above-mentioned setting mode to have following beneficial effect:

(1) By arranging the included angle adjusting mechanism, the included angle between the upper seat body 21 and the lower seat body 22 can be adjusted, so that a printing assembly positioned on the upper seat body 21 can be parallel or inclined relative to a horizontal plane, thereby facilitating the printing of the outer side surface of the paper-plastic packaging box with the side surface vertical or inclined relative to the horizontal plane, enabling the paper-plastic packaging box side surface pattern printing unit 1 to be used for paper-plastic packaging boxes with different types of specifications, and improving the application range of the paper-plastic packaging box side surface pattern printing unit 1;

(2) The pushing block 29 applies pressure to the paper-plastic packaging box to the upper base 21 or the printing component, so as to push the upper base 21 to move to the front end of the printing component or move to the rear end of the printing component, and after the paper-plastic packaging box side pattern printing unit 1 is arranged on the printing equipment, the distance between the paper-plastic packaging box side pattern printing unit 1 and the paper-plastic packaging box can be finely adjusted (the adjustment range is 0.1-1.0 mm), so that paper-plastic packaging boxes with different thicknesses can be printed.

The "front ends" appearing in this embodiment all refer to "one end toward the printing end of the printing assembly", and the "rear ends" appearing in this embodiment all refer to "one end away from the printing end of the printing assembly".

Example two

Referring to fig. 18, this embodiment is a modification of the first embodiment, and differs from the first embodiment in that the side pattern printing unit 1 is provided with two.

In this embodiment, two side pattern printing units 1 are provided, and the two side pattern printing units 1 are correspondingly disposed on two sides of the guide rail 11.

Through set up side pattern printing unit 1 respectively in the guide rail 11 both sides, can carry out the printing simultaneously to two lateral surfaces of the paper plastic packaging box on pushing to side pattern printing unit 1 along guide rail 11 to satisfy different printing demands, improve the efficiency of printing paper plastic packaging box simultaneously, in addition, because support down pressing device 12 corresponds side pattern printing unit 1, can share the inboard that supports the paper plastic packaging box of pressing device 12 under the same side pattern printing unit 1 when printing, thereby reduce the setting of spare part, reduction in production cost.

In actual production, if only one of the outer sides of the paper-plastic packaging box is required to be subjected to pattern printing, only one side pattern printing unit 1 can be arranged, or two side pattern printing units 1 can be arranged, and the side pattern printing units 1 which are not required to be used are in a deactivated state.

In this embodiment, two side pattern printing units 1 are provided, and the lower pressing portion 122 is provided on two outer sides of the turntable 121 corresponding to the two side pattern printing units 1.

At this time, the driving assembly has the following advantageous effects: the two side pattern printing units 1 are arranged, the two side pattern printing units 1 are driven by the driver of the pushing mechanism to work, so that the two side pattern printing units 1 synchronously print two opposite outer side surfaces of the paper-plastic packaging box at the same time, the printing effect of the invention is improved, in addition, the arrangement mode can reduce the arrangement of other power sources on the invention to drive the side pattern printing units 1 to work, thereby simplifying the internal structure of the invention and reducing the production and maintenance cost of equipment.

Example III

Referring to fig. 19 to 21, this embodiment is a modification of the first or second embodiment, and differs from the first or second embodiment in the structure of the side pattern printing unit 1.

The printing assembly comprises two printing plate rollers 4 and printing rollers 5, and the two printing plate rollers 4 and the printing rollers 5 are axially and rotatably arranged on the mounting seat 2; two plate rollers are correspondingly arranged at two sides of the printing roller 5.

Because the number of the printing roller 4 is two, the number of the first spacing adjusting mechanisms is correspondingly two, and the first push rods 641 of the two first spacing adjusting mechanisms are connected through the first elastic members 63, that is, one end of each first elastic member 63 is connected with the first push rod 641 positioned at the left side of the printing roller 5, the other end of each first elastic member 63 is connected with the first push rod 641 positioned at the right side of the printing roller 5, and the first elastic member 63 applies a force to the middle of the first mounting frame 52 on the two first push rods 641.

The ink supply mechanisms 3 are arranged in two corresponding printing plate rollers, and the two ink supply mechanisms 3 respectively supply ink for the two printing plate rollers.

By arranging two printing plate rollers 4 and two ink supply mechanisms 3, the paper-plastic packaging box side surface pattern printing unit 1 can print two patterns with different colors on the paper-plastic packaging box side surface and two different patterns with different colors, so that a multicolor picture can be formed on the paper-plastic packaging box side surface.

(1) The invention is through setting up the side pattern printing unit 1 with pattern printing plate 41, the pattern printing plate 41 attaches the printing ink and forms the print pattern, through making the pattern printing plate 41 contact with outside of the paper-plastic packaging box, thus print the pattern outside of the paper-plastic packaging box, have realized the automatic printing of printing ink output and pattern, raise the printing efficiency to the paper-plastic packaging box, in addition, the production personnel only need to adjust the kind of printing ink, change the pattern printing plate of different pattern, can realize printing the pattern rich in color, pattern and special, high in label on the outside of the paper-plastic packaging box, raise the recognition degree of the product external packing effectively;

(2) According to the invention, the lower pressing device 12 is arranged on the guide rail 11 corresponding to the side surface pattern printing unit 1, so that when the side surface pattern printing unit 1 prints the outer side surface of the paper-plastic packaging box, the lower pressing device 12 can simultaneously support the inner side of the paper-plastic packaging box, and further deformation and even damage of the paper-plastic packaging box caused by overlarge pressure applied to the outer side surface of the paper-plastic packaging box by the side surface pattern printing unit 1 are avoided, and the lower pressing device 12 can fix the inner side of the paper-plastic packaging box, so that the printing effect of the side surface pattern printing unit is improved, and the attractiveness of the paper-plastic packaging box after pattern printing is improved; in addition, the lower pressing device 12 plays a limiting role on the movement of the paper-plastic packaging box, so that the paper-plastic packaging box is more stable in movement, and the paper-plastic packaging box is prevented from falling off the guide rail.

Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.

Claims

1. The paper-plastic packaging box side pattern printing device is characterized by comprising a conveying device, a side pattern printing unit and a pressing device;

the conveying device comprises a guide rail and a pushing mechanism, and the pushing mechanism is used for pushing the paper-plastic packaging box to the side pattern printing unit along the guide rail;

the lower pressing device is arranged on the guide rail corresponding to the side pattern printing unit and is used for pressing the inner side of the paper-plastic packaging box;

the side pattern printing unit comprises an ink supply mechanism and a printing assembly, wherein the ink supply mechanism is used for supplying ink to the printing assembly; the printing component is provided with a pattern printing plate, and the pattern printing plate can be attached with ink to form a printing pattern;

the printing assembly can be contacted with the outer side of the paper-plastic packaging box, and the lower pressing device is matched with the printing assembly to print the printing pattern on the outer side of the paper-plastic packaging box;

the side pattern printing unit further comprises a mounting seat, the mounting seat is arranged on the side part of the guide rail, and the ink supply mechanism and the printing component are arranged on the mounting seat;

the printing assembly comprises a printing plate roller and a printing roller, and the printing plate roller and the printing roller are axially and rotatably arranged on the mounting seat;

the pattern printing plate is arranged on the outer side of the printing plate roller, a printing block is arranged on the outer side of the printing roller and is in rolling contact with the pattern printing plate, so that a pattern is formed on the printing block, and the pattern can be printed on the paper-plastic packaging box by the printing block;

The ink supply mechanism comprises an ink box, an ink receiving roller and a plurality of ink homogenizing rollers, wherein the ink receiving roller and the ink homogenizing rollers can rotate up and down in a reciprocating manner; the upper ink box is used for storing ink, and an ink outlet is formed in the upper ink box; the ink receiving roller is used for receiving the ink flowing out of the upper ink box, transferring the ink to the ink homogenizing roller, the printing plate roller or another ink receiving roller, and uniformly mixing the ink by the ink homogenizing roller and transferring the ink to the ink receiving roller so as to uniformly distribute the ink on the outer side surface of the ink receiving roller;

the mounting seat comprises an upper seat body and a lower seat body, the ink supply mechanism and the printing assembly are arranged on the upper seat body, the upper seat body is arranged on the lower seat body, the front end of the upper seat body is connected with the front end of the lower seat body, and the rear end of the upper seat body is respectively and movably connected with the rear end of the lower seat body;

an included angle adjusting mechanism is arranged between the upper seat body and the lower seat body, and can adjust the included angle between the upper seat body and the lower seat body, so that the printing assembly positioned on the upper seat body can be parallel or inclined relative to the horizontal plane;

the lower pressing device comprises a rotary table, the rotary table corresponds to a guide rail arranged on the side surface pattern printing unit, and a lower pressing part for the inner side surface of the mortgage paper-plastic packaging box is arranged on the rotary table; the outer side surface of the rotary table is provided with a plurality of supporting plates, and the lower pressing part is formed by the plurality of supporting plates;

The supporting plate is in a fan shape;

the upper pressing device is used for limiting the moving range of the upper part of the paper-plastic packaging box on the guide rail; the upper pressing device comprises a mounting bracket and a pressing block, and the pressing block is arranged above the lower pressing device through the mounting bracket;

the included angle adjusting mechanism comprises a front side chute, a rear side chute, a sliding connecting piece, a first locking piece, a positioning block, a push block adjusting piece and a push block; the front side chute and the rear side chute are respectively arranged at the front side and the rear side of the lower seat body, the front end of the front side chute is inclined towards the lower end of the lower seat body, and the rear side chute is vertical to the upper end face of the lower seat body; the front side of the upper seat body is connected with the front side sliding groove through a sliding connecting piece, and the rear side of the upper seat body is connected with the rear side sliding groove through a first locking piece; the positioning block is arranged on the lower seat body, the pushing block adjusting piece penetrates through the positioning block, and the pushing block adjusting piece is in threaded connection with the positioning block; the push block is slidably arranged on the lower base body, an inclined plane inclined to the guide rail is arranged at one end of the guide rail of the push block, one end of the push block adjusting piece penetrates through the positioning block to be connected with the push block, and the vertex of the inclined plane of the push block is abutted against the corresponding position of the upper base body or the printing component by adjusting the position of the push block relative to the lower base body.

2. The paper-plastic packaging box side pattern printing device according to claim 1, wherein the pushing mechanism comprises a driver, a linkage belt and a plurality of pushing pieces, the linkage belt is arranged on the side part of the guide rail and along the length direction of the guide rail, the pushing pieces are equidistantly arranged on the linkage belt, and the driver is used for driving the linkage belt to move so that the pushing pieces push the paper-plastic packaging box to move along the guide rail direction.

3. The device for printing the side pattern of the paper-plastic packaging box according to claim 2, wherein two side pattern printing units are arranged, and the two side pattern printing units are correspondingly arranged on two sides of the guide rail.

4. A paper plastic package side pattern printing device as recited in claim 2 or 3, further comprising a drive assembly comprising a first synchronizing wheel and a plurality of drive gears;

the first synchronous wheel is arranged on the printing roller, the driver is in transmission connection with the first synchronous wheel, and the driver drives the printing roller to rotate through the first synchronous wheel;

the printing roller and the printing plate roller are connected through a transmission gear in a transmission way so as to enable the printing plate wheel and the printing wheel to synchronously rotate.

5. The paper-plastic packaging box side pattern printing device according to claim 2, wherein the pressing device further comprises a turntable synchronizing wheel, the turntable is perpendicular to the guide rail and can axially rotate in a pushing direction of the pushing mechanism, the turntable synchronizing wheel is connected with the turntable, the driver is in transmission connection with the turntable synchronizing wheel, and the driver drives the turntable to rotate through the turntable synchronizing wheel.