CN114734720B - Corrugated board printing mechanism and production line - Google Patents

Abstract

The invention discloses a corrugated board printing mechanism and a production line, wherein the corrugated board printing mechanism comprises a support and a printing machine arranged on the support, one end of a fixed plate is rotatably provided with an elastic rod, the corrugated board printing mechanism also comprises two parallel plates which are arranged in a sliding way, the sliding directions of the two parallel plates are perpendicular to the conveying direction of a conveying belt, and when corrugated paper passes through the parallel plates through flattening of printing equipment, the elastic rod drives the two parallel plates to move oppositely through the driving of a transmission assembly so as to extrude the corrugated paper, and the corrugated paper is straightened. According to the corrugated board printing mechanism and the production line, by arranging the two parallel plates capable of moving oppositely, corrugated boards can be corrected by acting on the corrugated boards through the movement of the parallel plates in the process of conveying the corrugated boards, the uniformity of corrugated boards passing through printing equipment can be greatly improved, the subsequent printing of the corrugated boards can be facilitated, and the printing qualification rate and the printing quality of the corrugated boards are improved.

Description

Corrugated board printing mechanism and production line

Technical Field

The invention relates to the technical field of corrugated board production, in particular to a corrugated board printing mechanism and a production line.

Background

The corrugated board is a multi-layer adhesive body, at least comprises a layer of wavy sandwich paper and a layer of paper board, can resist collision and drop in the carrying process, and when enterprises produce the paper boxes, the corrugated board needs to be cut according to the required size, and the cut corrugated paper passes through a printing mechanism to be printed;

The defects in the prior art are as follows: in the prior art, when corrugated paper boxes are produced, the corrugated paper boxes are cut generally in the conveying process of the corrugated paper boxes through a conveyor, the corrugated paper boxes are inclined in conveying, so that the printed content in a printer is not regular, and the printing quality and the qualification rate of the corrugated paper boxes are reduced.

Disclosure of Invention

The invention aims to provide a corrugated board printing mechanism and a production line, which are used for solving the defects in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the corrugated board printing mechanism comprises a bracket and a printer arranged on the bracket, wherein a fixed plate is fixedly arranged on the bracket, one end of the fixed plate is rotatably provided with an elastic rod, the corrugated board printing mechanism further comprises two parallel plates which are arranged in a sliding manner, and the sliding direction of the two parallel plates is perpendicular to the conveying direction of a conveying belt;

when the corrugated paper is flattened through the parallel plates by the printing equipment, the baffle assembly arranged on the conveying belt toggles the elastic rod, so that the elastic rod drives the two parallel plates to move oppositely through the driving of the transmission assembly, the corrugated paper is extruded, and the corrugated paper is righted.

Preferably, the number of the baffle components is a plurality, and the baffle components are uniformly distributed on the conveying belt, the baffle components comprise fixing blocks arranged on the conveying belt, and the fixing blocks push the corrugated board to drive the corrugated board to synchronously move.

Preferably, the end part of the elastic rod extends into the conveying belt, and the elastic rod can be stirred when the fixed block moves.

Preferably, the transmission assembly comprises a sloping plate arranged on the fixed plate in a sliding manner and a transmission rod arranged on the sloping plate in a rotating manner, one end of the transmission rod is arranged in a U-shaped groove formed in the sloping plate in a rotating manner, and the other end of the transmission rod is arranged on the parallel plate in a rotating manner.

Preferably, an elastic piece is arranged on the chute of the inclined plate, the parallel plate is contracted into the fixed plate under the elasticity of the elastic piece, and one end of the inclined plate is connected to the rotating shaft of the elastic rod through a connecting guide rope.

Preferably, the rotating shaft of the elastic rod is also provided with a torque spring, and the elastic rod is positioned in a direction perpendicular to the conveying belt under the elasticity of the torque spring.

Preferably, a second sliding rod is fixedly arranged on one side of the parallel plate, one end of the second sliding rod penetrates through the fixed plate, and the parallel plate is parallel to the bracket by limiting of the second sliding rod.

Preferably, one side of the parallel plate is slidably provided with a parallel bar, and the parallel bar is parallel to the parallel plate.

Preferably, the printer is disposed in a downstream region of the parallel plates.

The corrugated paper production line comprises the corrugated board printing equipment and further comprises a flattening mechanism arranged at the upstream of the printing equipment, and the parallel plates are arranged in the downstream area of the printing equipment.

In the technical scheme, the corrugated board printing mechanism and the production line provided by the invention have the beneficial effects that:

according to the corrugated board printing device, the two parallel plates which can move towards each other are arranged, and then the two parallel plates are driven to move through the conveying of the conveying belt, namely, the corrugated board can be corrected through the movement of the parallel plates acting on the corrugated board in the process of conveying the corrugated board, so that the corrugated board in the conveying process is parallel to the conveying direction of the conveying belt, namely, the uniformity of the corrugated board passing through the printing equipment can be greatly improved, the corrugated board can be conveniently printed later, and the printing qualification rate and the printing quality of the corrugated board are improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of a structure provided in an embodiment of the present invention;

FIG. 2 is a schematic top view of an embodiment of the present invention;

FIG. 3 is a schematic diagram of a printing apparatus and a disk parallel plate according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a transmission assembly and parallel plates according to an embodiment of the present invention;

FIG. 5 is a schematic view of a structure of a slide plate, a platen and a fixing frame according to an embodiment of the present invention;

FIG. 6 is a schematic side view of a structure according to an embodiment of the present invention;

fig. 7 is an enlarged schematic view of a structure at a according to an embodiment of the present invention;

FIG. 8 is a schematic view of a platen and support columns according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a fixed transverse plate and a limiting slide bar according to an embodiment of the present invention;

FIG. 10 is a schematic view of a fixed cross plate and a structure according to an embodiment of the present invention

FIG. 11 is a schematic view showing a partial cross section of a platen and a hinge rod and a stop collar according to an embodiment of the present invention

FIG. 12 is a schematic cross-sectional view of a spacer assembly according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a support column and a limit sliding rod according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a fixing frame, a sliding plate and a platen according to an embodiment of the present invention

Fig. 15 is a schematic structural diagram of a fixing frame and a limiting groove according to an embodiment of the present invention.

Reference numerals illustrate:

1. A bracket; 11. a printing device; 2. a fixing frame; 201. a limit groove; 2011. a first chute; 2012. a second chute; 2013. a fixing bump; a fixing plate; 31. an elastic rod; 311. connecting a guide rope; 32. a parallel plate; 321. parallel strips; 322. a second slide bar; 21. a slide plate; 211. a first slide bar; 22. fixing the transverse plate; 221. a friction plate; 222. a rotating lever; 223. a rotating shaft; 2231. an adjusting rod; 2232. a worm; 2233. a worm wheel; 2234. a support roller; 23. a flattening plate; 231. a sliding pressure plate; 232. a support column; 233. a limit slide bar; 234. a hinge rod; 235. a limit sleeve; 4. a sloping plate; 41. a transmission rod; 5. a conveyor belt; 51. a sliding sleeve; 52. a fixed block; 6. and (3) an inclined plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "comprising" or "includes" and the like in this disclosure is intended to cover an element or article listed after that term and equivalents thereof without precluding other elements or articles. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Referring to fig. 1-15, a corrugated board printing mechanism comprises a bracket 1 and a printer arranged on the bracket 1, wherein a fixed plate 3 is fixedly arranged on the bracket 1, one end of the fixed plate 3 is rotatably provided with an elastic rod 31, the corrugated board printing mechanism further comprises two parallel plates 32 which are arranged in a sliding manner, and the sliding direction of the two parallel plates 32 is perpendicular to the conveying direction of a conveying belt 5; when corrugated paper is flattened through the parallel plates 32 by the printing equipment 11, the baffle assembly arranged on the conveying belt 5 toggles the elastic rod 31, so that the elastic rod 31 drives the two parallel plates 32 to move oppositely through the driving of the transmission assembly to squeeze the corrugated paper, and the corrugated paper is righted. Specifically, in the conveying process, the baffle component can act on the elastic rod 31, then the elastic rod 31 is extruded, and then the elastic rod 31 acts on the transmission component, so that the transmission component drives the parallel plates 32 to move, and further the corrugated board in the conveying process can be righted, namely, the corrugated board can be conveniently printed by the aid of the parallel plates 32 which can move oppositely, and then the two parallel plates 32 are driven to move through the conveying of the conveying belt 5, namely, the corrugated board can be straightened through the movement of the parallel plates 32 in the conveying process of the corrugated board, so that the corrugated board in the conveying process is parallel to the conveying direction of the conveying belt 5, namely, the uniformity of the corrugated board passing through the printing equipment 11 can be greatly improved, the follow-up printing of the corrugated board can be facilitated, and the printing qualification rate and the printing quality of the corrugated board can be improved.

Specifically, the number of the baffle components is a plurality of, and the baffle components are uniformly distributed on the conveying belt 5, the baffle components comprise fixing blocks 52 arranged on the conveying belt 5, and the fixing blocks 52 push corrugated boards to drive the corrugated boards to synchronously move. The baffle component is arranged in two rows, then the corrugated board is propped against the fixed plate 3, and the corrugated board can be driven to move through the movement of the fixed plate 3.

Further, the end of the elastic rod 31 extends onto the conveyor 5, and the fixing block 52 can stir the elastic rod 31 when moving. The elastic rod 31 is located above the conveyor belt 5 and can be abutted against the fixed block 52 without obstructing the movement of the corrugated board.

Further, the transmission assembly comprises a sloping plate 4 arranged on the fixed plate 3 in a sliding manner and a transmission rod 41 arranged on the sloping plate 4 in a rotating manner, one end of the transmission rod 41 is arranged in a U-shaped groove formed in the sloping plate 4 in a rotating manner, and the other end of the transmission rod 41 is arranged on the parallel plate 32 in a rotating manner.

Further, an elastic member is disposed on the sliding groove of the inclined plate 4, under the elasticity of the elastic member, the parallel plate 32 is retracted into the fixed plate 3, and one end of the inclined plate 4 is connected to the rotating shaft of the elastic rod 31 through the connecting guide rope 311. Through, swash plate 4 drives the transfer line 41 that is connected and moves, then transfer line 41 drives the parallel plate 32 that is connected and moves, makes two parallel plates 32 to the position department that leans on conveyer belt 5 centre, can carry out spacing on the position to the corrugated container board of carrying and correct.

Further, a torque spring is further disposed on the rotating shaft of the elastic rod 31, so that the elastic rod 31 is in a direction perpendicular to the conveyor belt 5 under the elastic force of the torque spring.

Further, a second slide bar is fixedly arranged on one side of the parallel plate 32, one end of the second slide bar penetrates through the fixed plate 3, and the parallel plate 32 is parallel to the bracket 1 by the limitation of the second slide bar.

Further, one side of the parallel plate 32 is slidably provided with a parallel bar 321, and the parallel bar 321 is parallel to the parallel plate 32. The parallel strips 321 can avoid the corrugated paper from being excessively extruded by the parallel plates 32.

Further, the printer is disposed in a downstream region of the parallel plate 32.

In order to improve the uniformity of the surface of the corrugated board, the invention also provides a corrugated board production line, which comprises the corrugated board printing mechanism and a flattening mechanism arranged at the upstream of the printing equipment 11, wherein the parallel plate 32 is arranged at the downstream area of the printing equipment 11, the cut corrugated board is flattened by the flattening mechanism arranged at the upstream of the printing equipment 11, then is subjected to position correction by the parallel plate 32, and finally is printed by a printer.

The flattening mechanism comprises a bracket 1, wherein a fixing frame 2 is arranged on the bracket 1: the fixing frame 2 is provided with a pressing component in a sliding manner along the conveying direction of the conveying belt 5, the pressing component comprises two sliding plates 21 and a pressing plate 23 which are arranged in a sliding manner, and the pressing plate 23 and the sliding plate 21 are connected in a sliding manner through a first sliding rod 211.

A flattening space for bearing corrugated boards is arranged between the flattening plate 23 and the sliding plate 21, a baffle component is further arranged on the conveying belt 5, the flattening plate 23 is synchronously conveyed and moves towards the direction close to the sliding plate 21 through the baffle component when the conveying belt 5 is conveyed on the flattening plate 23, so that the corrugated boards in the flattening space are pressed, in particular, the flattening space is used for placing the corrugated boards, then the flattening plate 23 synchronously moves through the baffle component when the flattening plate 23 is acted on during conveying, the flattening plate 23 synchronously conveys and moves upwards in the vertical direction, gradually moves towards the direction close to the sliding plate 21, so that the corrugated board in the flattening space is pressed, namely, the corrugated board can be flattened to the two parallel plates 32 which move through the arrangement, then the two parallel plates 32 are driven to move through the conveying of the conveying belt 5, namely, the corrugated board can be corrected through the movement of the parallel plates 32 in the process of conveying the corrugated board, the corrugated board in the conveying process is parallel to the conveying direction of the conveying belt 5, namely, the uniformity of the corrugated board passing through the printing equipment 11 can be greatly improved, the follow-up printing of the corrugated board can be facilitated, and the printing qualification rate and the printing quality of the corrugated board are improved.

Further, the fixing frame 2 is fixedly arranged on the bracket 1, the sliding plate 21 is slidably arranged on the fixing frame 2, and in the conveying process of the conveying belt 5, the sliding plate 21 can be synchronously conveyed with the pressing plate 23 through the limit of the first sliding rod 211.

Further, the quantity of separating the shelves subassembly is a plurality of, and evenly distributed is on conveyer belt 5, separate the shelves subassembly including setting up fixed block 52 and the slip sleeve 51 of slip cap on fixed block 52 on conveyer belt 5, separate the setting that shelves subassembly passes through slip sleeve and fixed block, flexible that can adapt to in order to separate the shelves subassembly and break away from the stop collar when, can not hinder with the gland plate.

Further, the fixing frame 2 is provided with a limit groove 201, the platen 23 is rotatably provided with a support column 232, the support column 232 is disposed in the limit groove 201 in a rolling manner, the limit groove 201 is respectively provided with a first chute 2011 which is obliquely arranged and a second chute 2012 which is horizontally arranged along the conveying direction, and the height of the horizontal line of the second chute 2012 is equal to the position of the highest position of the first chute 2011.

Further, the belt 5 moving spacer assembly of the belt 5 acts on the platen 23, so that the platen 23 slides from the direction of the first chute 2011 to the second chute 2012 and moves upward in the vertical direction.

Further, two fixing frames 2 are respectively and fixedly provided with a fixing transverse plate 22, the fixing transverse plates 22 are positioned at the outlet positions of the flattening spaces, the fixing transverse plates 22 are provided with support adjusting assemblies, each support adjusting assembly comprises a plurality of rotating shafts 223 which are rotatably arranged on the fixing transverse plates 22, and two sides of each rotating shaft 223 are respectively and rotatably provided with a supporting roller 2234.

Further, the fixed transverse plate 22 is rotatably provided with an adjusting rod 2231, the supporting and adjusting assembly further comprises a worm wheel 2233 fixedly arranged on the shaft rod of the rotating shaft 223 and a worm wheel 2233 rotatably arranged on the adjusting rod 2231, the worm wheel 2233 is meshed with the worm rod 2232, when the corrugated board is flattened through the supporting and adjusting assembly, the pressing distance between the sliding plate 21 and the pressing plate 23 can be prevented from being too small, so that the corrugated board is excessively stressed, namely, the corrugated board can be further protected, and the corrugated board can be adjusted to be high in functionality through the meshing of the worm wheels and the worm wheels.

Specifically, friction plates 221 are respectively arranged on the two fixed transverse plates 22, rotating rods 222 are further rotatably arranged on the fixed transverse plates 22, the number of the rotating rods 222 is multiple, the other ends of the rotating rods 222 are rotatably arranged on the friction plates 221, and the purpose is mainly that after flattening is achieved, when the baffle assembly is separated from the limiting sleeve 235, the lower pressing plate is retracted, corrugated paper can be clamped by the two friction plates 221 respectively, so that the corrugated paper and the sliding pressing plate 231 below are driven to slide, and the corrugated paper is conveniently separated from the lower pressing plate after being pressed.

In a further provided embodiment of the present invention, the present invention further includes a limiting detachment assembly, where the limiting detachment assembly includes a limiting sleeve 235 vertically slidably disposed on the platen 23 and a hinge rod 234 hinged in the platen 23, and the hinge rod 234 is rotatably disposed on the limiting sleeve 235; the limiting and disengaging assembly further comprises a limiting slide bar 233 which is arranged in a sliding manner along the direction perpendicular to the conveying belt 5, and one end of the limiting slide bar 233 penetrates through the supporting column 232 and is inserted into the limiting groove 201.

Specifically, the other end of the limiting slide bar 233 is disposed in a trapezoid shape, that is, has an oblique position, as shown in fig. 13, and the end abuts against the end of the hinge bar 234 away from the limiting sleeve 235, that is, when the limiting slide bar 233 moves towards the hinge bar 234, the end of the hinge bar 234 can move downwards through the trapezoid shape, that is, the limiting sleeve 235 connected with the other end can be driven to move upwards, so that the limiting sleeve 235 is separated from the baffle component.

In the present invention, there is an arrangement of the following elastic members, and a spring is disposed between the sliding plate 21 and the fixing frame 2, and the elastic force of the spring can enable the sliding plate 21 to be at the initial position of the first chute 2011, that is, the position of the sliding plate 21 as shown in fig. 1.

The hinge rod 234 and the pressing plate 23 are provided with a torsion spring on a shaft rotating toward the direction, and the elasticity of the torsion spring makes the limit sleeve 235 have a downward movement trend.

In order to improve the conveying uniformity of corrugated boards during printing, the invention also provides a corrugated paper production line, which comprises the corrugated board flattening mechanism and a corrugated board flattening mechanism arranged at the downstream of the flattening mechanism.

When the corrugated paper feeding device is used, firstly, cut corrugated paper is conveyed onto the conveying belt 5, then the conveying belt 5 drives the corrugated paper to move, firstly, the corrugated paper enters the lower part of the sliding plate 21, when the corrugated paper moves, the corrugated paper gradually enters the upper part of the pressing plate 23 through the wedge-shaped plate, then continuously moves, the rollers 511 gradually move and are attached in the limiting sleeve 235, then the pressing plate 23 can be synchronously driven to move, in the moving process, the supporting columns 232 arranged at the two ends of the pressing plate 23 are respectively positioned in the limiting grooves 201 and move into the second sliding groove 2012 from the first sliding groove 2011, and when the corrugated paper continuously moves, the horizontal height of the second sliding groove 2012 is higher than that of the first sliding groove 2011, That is, when sliding, the pressing plate 23 is gradually moved upward, i.e., moved in a direction approaching the slide plate 21, i.e., the corrugated board is flattened, and when synchronously moved to the second chute 2012, the pressed space is unchanged, the corrugated board is always pressed, and the fixed cross plate 22 is inserted into the pressed space, the rollers 511 in the fixed cross plate 22 act on the slide plate 21 and the pressing plate 23 disposed below, respectively, and the friction plates 221 disposed at both sides of the fixed cross plate 22 abut against both side walls of the corrugated board, and then after the continuous movement, the limit slide bars 233 sliding in the limit grooves 201 on the support columns 232 are gradually moved to the fixing projections 2013, Namely, the limit sliding rod 233 is pressed so that the limit sliding rod 233 moves inward, then the trapezoid inclined surface of the limit sliding rod 233 presses one end of the hinge rod 234, so that the hinge rod 234 rotates along the rotation shaft 223 thereof and moves downward, namely, the limit sleeve 235 connected with the other end is driven to move upward, so that the limit sleeve 235 is separated from the baffle assembly, then the sliding plate 21 and the pressing plate 23 arranged below move back under the elasticity of the spring, namely, move toward the first sliding groove 2011 along the direction of the second sliding groove 2012, at this time, the two friction plates 221 press the sliding plates, so that the pressing plates are relatively fixed, The corrugated board is continuously conveyed towards the printing equipment 11 by the baffle component, and at the moment, the movable direction of the friction plate 221 is in the conveying direction towards the conveying belt 5, so that the friction plate 221 does not have extrusion force on the corrugated board, namely the conveying of the corrugated board is not influenced, the corrugated board is continuously conveyed onto the printing equipment 11, the baffle component gradually drives the corrugated board to move, then the baffle assembly moves, passes through the elastic rod 31, then presses the elastic rod 31 to enable the elastic rod 31 to rotate along the hinge shaft, as shown in fig. 4, then pulls the inclined plate 4 to move towards the elastic rod 31 through the connecting guide rope 311, so that the inclined plate 4 drives the connected transmission rod 41 to move, then the transmission rod 41 drives the connected parallel plates 32 to move, namely, the two parallel plates 32 move towards the position close to the middle of the conveying belt 5, namely, the conveyed corrugated boards can be limited in position and corrected, then after continuous conveying, the elastic rod 31 can be separated from the baffle assembly, so that the baffle assembly returns to the initial position, and the corrugated paper is convenient to convey and correct downwards, and finally the corrugated paper is conveyed into a printer for printing.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.

Claims (6)

1. The corrugated board printing mechanism comprises a support (1) and printing equipment (11) arranged on the support (1), and is characterized in that a fixed plate (3) is fixedly arranged on the support (1), one end of the fixed plate (3) is rotatably provided with an elastic rod (31), the corrugated board printing mechanism further comprises two parallel plates (32) which are arranged in a sliding manner, and the sliding direction of the two parallel plates (32) is perpendicular to the conveying direction of a conveying belt (5);

When corrugated paper flattened by the flattening mechanism passes through the parallel plates (32), the baffle assembly arranged on the conveying belt (5) toggles the elastic rod (31), so that the elastic rod (31) drives the two parallel plates (32) to move oppositely through the driving of the transmission assembly to extrude the corrugated paper, and the corrugated paper is straightened;

The number of the baffle components is a plurality, the baffle components are uniformly distributed on the conveying belt (5), the baffle components comprise fixed blocks (52) arranged on the conveying belt (5), and the fixed blocks (52) push corrugated boards to drive the corrugated boards to synchronously move;

the end part of the elastic rod (31) extends into the conveying belt (5), and the elastic rod (31) can be stirred when the fixed block (52) moves;

The transmission assembly comprises a sloping plate (4) arranged on the fixed plate (3) in a sliding manner and a transmission rod (41) arranged on the sloping plate (4) in a rotating manner, one end of the transmission rod (41) is arranged in a U-shaped groove formed in the sloping plate (4) in a rotating manner, and the other end of the transmission rod is arranged on the parallel plate (32) in a rotating manner;

an elastic piece is arranged on a chute of the inclined plate (4), under the elasticity of the elastic piece, the parallel plate (32) is contracted into the fixed plate (3), and one end of the inclined plate (4) is connected to a rotating shaft of the elastic rod (31) through a connecting guide rope (311);

The printing device comprises a printing device (11), and is characterized by further comprising a flattening mechanism, wherein the flattening mechanism is arranged in an upstream area of the printing device (11), the flattening mechanism comprises a support (1), and a fixing frame (2) is arranged on the support (1): the conveying device is characterized in that a pressing assembly is arranged on the fixing frame (2) in a sliding manner along the conveying direction of the conveying belt (5), the pressing assembly comprises two sliding plates (21) and a pressing plate (23) which are arranged in a sliding manner, and the pressing plate (23) is connected with the sliding plate (21) in a sliding manner through a first sliding rod (211);

A flattening space for bearing corrugated boards is arranged between the flattening plate (23) and the sliding plate (21), and in the conveying process of the conveying belt (5), the flattening plate (23) acts on the flattening plate (23) through the baffle component, and the flattening plate (23) synchronously conveys and moves towards a direction close to the sliding plate (21) so that the corrugated boards in the flattening space are pressed.

2. Corrugated board printing mechanism according to claim 1, characterized in that the rotation shaft of the elastic rod (31) is further provided with a torsion spring, under the elasticity of which the elastic rod (31) is positioned in a direction perpendicular to the conveyor belt (5).

3. Corrugated board printing mechanism according to claim 1, characterized in that one side of the parallel plate (32) is fixedly provided with a second slide bar, one end of which passes through the fixed plate (3), the parallel plate (32) being parallel to the bracket (1) by the restriction of the second slide bar.

4. A corrugated board printing mechanism according to claim 3, characterized in that one side of the parallel plate (32) is slidably provided with parallel strips (321), and that the parallel strips (321) are parallel to the parallel plate (32).

5. A corrugated board printing mechanism according to claim 1, wherein the printing apparatus (11) is arranged in a downstream region of the parallel plates (32).

6. A corrugated board production line comprising a corrugated board printing mechanism as claimed in any one of claims 1 to 5, and further comprising a flattening mechanism arranged upstream of the printing apparatus (11), the parallel plates (32) being arranged in an upstream region of the printing apparatus (11).