A coating printing device to enhance the inkjet printing effect on corrugated cardboard

Abstract

This utility model discloses a coating printing device for improving the ink spraying effect on corrugated cardboard, belonging to the field of corrugated cardboard printing technology. The device includes: a paper feeding mechanism, a coating mechanism, and an auxiliary conveying component; the coating mechanism includes a liquid storage box, a clamping component, and a coating sponge. Multiple sets of electromagnets and permanent magnets are arranged oppositely on the back of the clamping component. Adjacent electromagnets and permanent magnets have like magnetic poles that repel each other, generating a repulsive force. This causes the side of the permanent magnet facing away from the electromagnet to retract and impact the clamping component. This impact force is transmitted to a spring in the clamping component. The spring elastically reciprocates behind the coating sponge, causing the water on the upper part of the sponge to flow downwards and coat the surface of the corrugated cardboard. This utility model allows the water on the upper part of the coating sponge to continuously flow downwards, effectively preventing water accumulation on the upper part of the sponge and dryness on the lower part, thus ensuring the coating effect.

Description

Technical Field

[0001] This utility model belongs to the field of corrugated cardboard printing technology, and in particular, it is a coating printing device that enhances the ink spraying effect of corrugated cardboard. Background Technology

[0002] In today's packaging and printing industry, the demand for high-quality printing technology on corrugated cardboard is constantly increasing to meet growing environmental requirements and improve production efficiency. Existing corrugated cardboard printing technologies often involve directly spraying ink onto the cardboard. This method results in insufficiently thin and uneven ink application, severely impacting print quality and failing to meet the modern packaging and printing industry's requirements for high efficiency, environmental friendliness, and high quality.

[0003] To ensure the coating effect, existing technologies mainly enhance the coloring depth by spraying ink multiple times, but this also increases the amount of ink used and the production cost. Utility Model Content

[0004] The purpose of this invention is to provide a coating printing device that enhances the inkjet printing effect on corrugated cardboard, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coating printing device for improving the ink spraying effect on corrugated cardboard, comprising: A paper feeding mechanism is used to feed corrugated cardboard into the equipment; The coating mechanism is located above the output end of the paper feeding mechanism. The coating mechanism includes a liquid storage box, a clamping assembly located below the liquid storage box, a coating sponge clamped by the clamping assembly, and a liquid supply tube connecting the liquid storage box and the clamping assembly. An auxiliary conveying assembly, located directly below the coating mechanism, is used for conveying corrugated cardboard during water coating. The clamping assembly has multiple sets of electromagnets and permanent magnets arranged opposite each other on its back. The opposite ends of the adjacent electromagnets and permanent magnets are in a state of repulsion due to their similar magnetic poles. The repulsive force between them causes the side of the permanent magnet facing away from the electromagnet to move backward and strike the clamping assembly. This impact force is transmitted to the spring in the clamping assembly. The spring elastically reciprocates behind the coating sponge, causing the water on the upper part of the coating sponge to be vibrated and flow downward and be coated on the surface of the corrugated cardboard.

[0006] In a preferred embodiment, the clamping assembly includes an inverted T-shaped clamping back plate and an inverted L-shaped clamping top plate that is welded to the upper part of the T-shaped clamping back plate. An anti-fall hook is integrally connected to one end of the L-shaped clamping top plate away from the T-shaped clamping back plate, and the anti-fall hook is embedded in the coated sponge.

[0007] In this preferred embodiment, the surfaces of the coating sponge and the inner wall of the L-clamping top plate that are in contact with each other are horizontally and inwardly cut with hook grooves, and the anti-fall hooks are accommodated in the hook grooves, so that the anti-fall hooks can be lifted and hung on the coating sponge.

[0008] In a preferred embodiment of this scheme, the auxiliary conveying assembly includes a housing base, a conveying base plate embedded in the top surface of the housing base, and multiple conveying rollers that are densely rolled and embedded in the surface of the conveying base plate.

[0009] In a preferred embodiment, the paper feeding mechanism includes two paper feeding guards symmetrically welded to the outer wall of the input end of the housing base, and multiple paper feeding rollers rotatably mounted between the tops of the two paper feeding guards.

[0010] In this preferred embodiment, two supporting side plates are fixedly installed on both outer walls of the box base by bolts. An upper beam frame is installed between the tops of the two supporting side plates and above the box base. An L-bracket is welded to the bottom of the liquid storage box, and the other end of the L-bracket is welded to the outer wall of the upper beam frame. A supporting shaft is provided below the liquid storage box and between the two supporting side plates.

[0011] In a preferred embodiment, one of the supporting side uprights is equipped with a liquid inlet trough on the upper part of its outer wall. Both the liquid inlet trough and the outer wall of the liquid storage box have connecting pipe heads. Two connecting pipe heads are connected to each other through a pipe to supply water into the liquid storage box. Multiple supply pipes are symmetrically arranged, and each pipe has a water inlet valve.

[0012] In this preferred embodiment, the support shaft is longitudinally fixed to a bracket hanging plate on the side opposite to the clamping assembly, and the electromagnet is fixedly suspended at the lower part of the bracket hanging plate.

[0013] In this preferred embodiment, a base is integrally connected to the upper part of the back of the T-shaped clamping back plate, and the base is fixedly clamped on the support shaft to support the installation of the T-shaped clamping back plate.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows: After spraying a layer of white ink onto the corrugated cardboard, a layer of water is then applied using a coating printing device. This water layer helps the white ink to spread evenly on the corrugated cardboard, enhancing the color intensity of the white ink and improving the spraying effect.

[0015] By employing a design where the like poles of the electromagnet and permanent magnet in the coating printing device repel each other, the permanent magnet generates a repulsive force when the electromagnet is energized. This force pushes the permanent magnet backward to strike the clamping assembly. A spring inside the clamping assembly converts this impact force into elastic reciprocating oscillation, causing the coating sponge to vibrate behind it. This vibration allows moisture from the upper part of the coating sponge to continuously flow downward, effectively preventing moisture buildup at the top and dryness at the bottom. This operating principle ensures the coating sponge remains consistently moist, thereby improving coating efficiency and uniformity, and solving the problem of uneven coating leading to decreased printing quality in existing technologies.

[0016] By using a structure with multiple sets of electromagnets and permanent magnets arranged opposite each other on the back of the clamping assembly, periodic impacts and vibrations are achieved on the spring behind the coating sponge, thereby causing the entire coating sponge to vibrate slightly. This operating mechanism allows water to flow quickly to the lower part of the coating sponge, avoiding problems such as dry cardboard surface and uneven coating caused by localized water shortage. It achieves dynamic water replenishment, extending the service life of the coating components and improving coating quality.

[0017] By using a hook groove and anti-fall hook connection between the coating sponge and the clamping assembly, the sponge is prevented from sagging or slipping due to increased weight from absorbing water, thus improving clamping stability and operational safety. This design achieves an anti-slip fixing function, thereby ensuring the technical effect of guaranteeing the stability and safety of equipment operation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the clamping assembly of this utility model; Figure 3 This is a schematic diagram of the installation structure of the coating mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A; Figure 5 This is a side view of the clamping assembly of this utility model; Figure 6 This is a schematic diagram showing the installation of the electromagnet and permanent magnet of this utility model. Figure 7 This is a schematic diagram of the hook groove structure of this utility model.

[0020] Explanation of reference numerals in the attached figures: In the diagram: 1. Paper feeding mechanism; 2. Liquid coating mechanism; 3. Auxiliary conveying assembly; 4. Paper feeding guard plate; 5. Paper feeding roller; 6. Supporting side plate; 7. Box base; 8. Upper beam frame; 9. Liquid inlet tank; 10. Conveying base plate; 11. Conveying roller; 12. Liquid storage box; 13. Support shaft; 14. Liquid coating sponge; 15. Clamping assembly; 16. Infusion pipe; 17. Water inlet valve; 18. Support base; 19. Connecting pipe head; 20. L-shaped bracket; 21. T-shaped clamping back plate; 22. L-shaped clamping top plate; 23. Electromagnet; 24. Permanent magnet; 25. Suspension rope; 26. Base; 27. Bracket hanging plate; 28. Spring; 29. ​​Anti-fall hook; 30. Connecting rod; 31. Hook groove. Detailed Implementation

[0021] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0022] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0023] This embodiment provides, for example Figures 1 to 7 The illustrated coating printing apparatus for enhancing the inkjet printing effect on corrugated cardboard includes a paper feeding mechanism 1, a coating mechanism 2, and an auxiliary conveying assembly 3. The paper feeding mechanism 1 feeds the corrugated cardboard into the equipment. The coating mechanism 2 is located above the output end of the paper feeding mechanism 1. The coating mechanism 2 includes a liquid storage box 12, a clamping assembly 15 located below the liquid storage box 12, a coating sponge 14 clamped by the clamping assembly 15, and a water supply pipe 16 connecting the liquid storage box 12 and the clamping assembly 15 to deliver water and wet the coating sponge 14. The auxiliary conveying assembly 3 is located directly below the coating mechanism 2 and is used to convey the corrugated cardboard during water coating.

[0024] In this embodiment, multiple sets of electromagnets 23 and permanent magnets 24 are arranged opposite to each other on the back of the clamping assembly 15. The opposite ends of adjacent electromagnets 23 and permanent magnets 24 are in a state of repulsion due to their like magnetic poles, generating a repulsive force. This causes the side of the permanent magnet 24 facing away from the electromagnet 23 to retract and impact the clamping assembly 15. This impact force is transmitted to the spring 28 in the clamping assembly 15. The spring 28 elastically reciprocates behind the coating sponge 14, causing the water on the upper part of the coating sponge 14 to flow downwards and coat the surface of the corrugated cardboard. The design of vibrating the coating sponge 14 by the repulsive force generated by the like magnetic poles of the electromagnets 23 and permanent magnets 24 causing the permanent magnet 24 to impact the clamping assembly 15 is as follows. Figure 5 and Figure 6 The position of the vibration force transmission and radiation arc curve around the spring 28 shown prevents water from accumulating on the upper part of the coating sponge 14 and being unable to flow downwards, which would cause the lower part of the coating sponge 14 to dry out due to friction while coating the corrugated cardboard for a long time. This design allows water to flow continuously downwards, keeping the lower part of the coating sponge 14 in contact with the corrugated cardboard always moist, thus improving coating efficiency and effect.

[0025] In this embodiment, the clamping assembly 15 includes an inverted T-shaped clamping back plate 21 and an inverted L-shaped clamping top plate 22 that is welded to the upper part of the T-shaped clamping back plate 21. An anti-fall hook 29 is integrally connected to one end of the L-shaped clamping top plate 22 away from the T-shaped clamping back plate 21. The anti-fall hook 29 extends and is embedded in the liquid-coated sponge 14.

[0026] In this embodiment, the surfaces of the coating sponge 14 and the inner wall of the clamping top plate 22 are horizontally and inwardly cut with hook grooves 31. Anti-fall hooks 29 are accommodated in the hook grooves 31, so that the anti-fall hooks 29 can lift and hang the coating sponge 14. This prevents the coating sponge 14 from sinking and sliding down after being soaked in water.

[0027] In this embodiment, the auxiliary conveying component 3 includes a housing base 7, a conveying base plate 10 embedded in the top surface of the housing base 7, and a plurality of conveying rollers 11 densely rolling and embedded in the surface of the conveying base plate 10.

[0028] In this embodiment, the paper feeding mechanism 1 includes two paper feeding guards 4 symmetrically welded to the outer wall of the input end of the box seat 7, and multiple paper feeding rollers 5 rotatably mounted between the tops of the two paper feeding guards 4. This allows the corrugated cardboard to be conveyed onto the box seat 7 on the paper feeding rollers 5.

[0029] In this embodiment, two supporting side plates 6 are fixedly installed on both outer walls of the box base 7 by bolts. An upper beam frame 8 is installed between the tops of the two supporting side plates 6 and above the box base 7. An L-bracket 20 is welded to the bottom of the liquid storage box 12, and the other end of the L-bracket 20 is welded to the outer wall of the upper beam frame 8. A supporting shaft 13 is provided below the liquid storage box 12 and between the two supporting side plates 6. A supporting seat 18 is provided on the outer wall of each supporting side plate 6. The two ends of the supporting shaft 13 extend opposite to each other to the outside of the supporting side plate 6 and are supported and connected to the supporting seat 18.

[0030] In this embodiment, an inlet trough 9 is installed on the upper part of the outer wall of one of the supporting side upright plates 6. Both the inlet trough 9 and the outer wall of the storage box 12 have connecting pipe heads 19. The two connecting pipe heads 19 are connected by a pipe to supply water to the storage box 12. Multiple supply pipes 16 are symmetrically arranged, and each pipe has a water inlet valve 17.

[0031] In this embodiment, a support bracket 27 is longitudinally fixed to the side of the support shaft 13 facing away from the clamping assembly 15, and an electromagnet 23 is fixedly suspended at the lower part of the support bracket 27. Each permanent magnet 24 is suspended in a slack state on the back of the T-shaped clamping back plate 21 by suspension ropes 25 on both its upper and lower sides. The slack suspension of the suspension ropes 25 facilitates the backward movement of the permanent magnet 24 when it is repelled by the like poles of the electromagnet 23. This causes the end of the permanent magnet 24 away from the electromagnet 23 to strike the back of the T-shaped clamping back plate 21.

[0032] In this embodiment, a base 26 is integrally connected to the upper part of the back of the T-shaped clamping back plate 21. The base 26 is fixedly mounted on the support shaft 13, which enables the installation of the T-shaped clamping back plate 21.

[0033] It should be noted that the liquid in the above embodiments is mainly filtered water. Similarly, liquids with other properties or proportions are also applicable to this invention. The white ink in the above embodiments is an example; inks of any color are also applicable to this invention.

[0034] Working principle: First, a layer of white ink is sprayed onto the corrugated cardboard under the printhead of the corrugated cardboard printing machine.

[0035] After being coated with white ink, the corrugated cardboard enters the equipment through the paper feeding mechanism 1 of the coating and printing device. The paper feeding guard plate 4 limits the sides of the cardboard to prevent deviation. The corrugated cardboard is manually pushed and rolled through multiple paper feeding rollers 5. The box base 7 serves as the supporting foundation, bearing the entire equipment structure. The cardboard is smoothly conveyed on the paper feeding rollers 5 to the top of the box base 7, ready to enter the coating area. The coating mechanism 2 is located above the output end of the paper feeding mechanism and is responsible for coating the surface of the corrugated cardboard. Water flows from the liquid storage box 12 through the liquid inlet pipe 16 into the clamping assembly. 15. The coating sponge 14 is soaked in the coating solution. The coating sponge 14 evenly coats the corrugated cardboard surface with water. During the coating process, the cardboard is supported and conveyed forward by the conveyor rollers 11 to ensure that the coating process is continuous and uniform. (Each row of conveyor rollers 11 is connected together by a coupling shaft, and then each coupling shaft is driven to rotate by a motor, so that one motor drives one coupling shaft to realize the rotation of a row of conveyor rollers 11 for cardboard conveying. The coupling shaft and motor are not shown in the figure because they are arranged on the bottom surface of the conveyor base plate 10.)

[0036] To prevent water accumulation on the upper part of the coating sponge and water shortage at the lower part, the device uses a magnetic repulsion structure of electromagnet 23 and permanent magnet 24 for vibration-based water replenishment. Electromagnet 23 and permanent magnet 24 are arranged opposite each other, with like poles repelling each other. When the electromagnet is energized, it generates a repulsive force with the permanent magnet, pushing the permanent magnet backward. The backward movement of the permanent magnet impacts the clamping assembly 15, which contains a spring 28. Upon impact, the spring generates elastic swaying, causing the coating sponge 14 to vibrate back and forth. This vibration causes water on the upper part of the sponge to flow downward, keeping the lower part of the sponge moist and improving coating efficiency. This design effectively prevents problems such as localized dryness and uneven coating. After electromagnet 23 is energized, it is ensured that the opposing surfaces of electromagnet 23 and permanent magnet 24 are like poles (e.g., N to N) to generate a repulsive force. The distance between electromagnet 23 and permanent magnet 24 can be selected according to the actual situation. The two ends of electromagnet 23 are connected to a DC power supply via wires, with a switch connected in series in the middle. Ensure the power supply polarity is correct so that the magnetic poles generated by electromagnet 23 are in the same direction as those of permanent magnet 24. Press the switch to energize electromagnet 23, and a magnetic field is quickly established. Due to repulsive force, permanent magnet 24 is pushed backward by the repulsive force between its magnetic poles and those of electromagnet 23. Upon impacting the back plate, permanent magnet 24 moves backward along the slack suspension rope 25, eventually impacting the back plate again. After the power is disconnected, the magnetic field of electromagnet 23 disappears, and permanent magnet 24 returns to its original position. Repeat the power switch operation to continuously impact the back plate.

[0037] The liquid-coated sponge engages with the anti-fall hook 29 via the hook groove 31 to prevent it from slipping due to absorbing water and becoming heavier; the back of the T-shaped clamping back plate 21 is fixed to the support shaft 13 via the base 26 to ensure the stability of the overall structure. It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating printing apparatus for enhancing the inkjet printing effect on corrugated cardboard, characterized in that, include: Paper feeding mechanism (1) is used to feed corrugated cardboard into the equipment; The coating mechanism (2) is located above the output end of the paper feeding mechanism (1). The coating mechanism (2) includes a liquid storage box (12), a clamping assembly (15) located below the liquid storage box (12), a coating sponge (14) clamped by the clamping assembly (15), and a liquid storage box (12) and clamping assembly (15) connected by an infusion tube (16). The auxiliary conveying component (3) is located directly below the coating mechanism (2) and is used for conveying the corrugated cardboard during water coating. The clamping assembly (15) has multiple sets of electromagnets (23) and permanent magnets (24) arranged opposite to each other on its back. The adjacent electromagnets (23) and permanent magnets (24) are in a state of repulsion of like magnetic poles at their opposite ends, generating a repulsive force between them. This causes the side of the permanent magnet (24) facing away from the electromagnet (23) to strike the clamping assembly (15), causing the spring (28) to elastically reciprocate behind the liquid-coated sponge (14), and the liquid in the upper part of the liquid-coated sponge (14) to be vibrated to the lower part.

2. The coating and printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 1, characterized in that: The clamping assembly (15) includes an inverted T-shaped clamping back plate (21) and an inverted L-shaped clamping top plate (22) fixed to the upper part of the T-shaped clamping back plate (21). The L-shaped clamping top plate (22) has an integrally extended end connected to a fall arrest hook (29) at one end away from the T-shaped clamping back plate (21). The fall arrest hook (29) extends into the liquid-coated sponge (14).

3. The coating and printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 2, characterized in that: The surfaces of the coating sponge (14) and the inner wall of the L clamping top plate (22) are provided with hook grooves (31) that are horizontal and inward, and the anti-fall hook (29) is accommodated in the hook grooves (31).

4. The coating and printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 2, characterized in that: The auxiliary conveying assembly (3) includes a housing base (7), a conveying base plate (10) embedded in the top surface of the housing base (7), and multiple conveying rollers (11) embedded in the surface of the conveying base plate (10).

5. The coating and printing apparatus for increasing the inkjet printing effect on corrugated cardboard according to claim 4, characterized in that: The paper feeding mechanism (1) includes two paper feeding guards (4) symmetrically fixed to the outer wall of the input end of the box base (7) and multiple paper feeding rollers (5) rotatably mounted between the tops of the two paper feeding guards (4).

6. The coating and printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 4, characterized in that: The outer walls of both sides of the box base (7) are fixedly installed with two supporting side plates (6). An upper beam frame (8) is installed between the tops of the two supporting side plates (6) and above the box base (7). An L bracket (20) is fixed at the bottom of the liquid storage box (12). The other end of the L bracket (20) is fixed to the outer wall of the upper beam frame (8). A supporting shaft (13) is provided below the liquid storage box (12) and between the two supporting side plates (6).

7. A coating and printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 6, characterized in that: One of the supporting side plates (6) has an inlet tank (9) installed on the upper part of its outer wall. Both the inlet tank (9) and the outer wall of the storage box (12) have connecting pipe heads (19). The two connecting pipe heads (19) are connected by a pipe to deliver liquid to the storage box (12). There are multiple symmetrically arranged inlet pipes (16), and each pipe is equipped with a water inlet valve (17).

8. A coating printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 7, characterized in that: The support shaft (13) is longitudinally fixed to a bracket hanging plate (27) on the side opposite to the clamping assembly (15), and the electromagnet (23) is fixedly suspended at the lower part of the bracket hanging plate (27).

9. A coating and printing apparatus for improving the inkjet printing effect on corrugated cardboard according to claim 7, characterized in that: The upper part of the back of the T-shaped clamping back plate (21) is integrally connected to a base (26), and the base (26) is fixedly clamped on the support shaft (13).

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