Ink-jet printing device

Abstract

The utility model belongs to the technical field of printing machines, and particularly relates to an ink jet type printing device which comprises an ink jet head, a linear track and a plurality of baking lamps which are sequentially arranged from top to bottom, two conveying belts are horizontally arranged below the ink jet head, and a copper heat conduction piece is located between the two conveying belts. Wherein one conveying belt close to the ink jet head is used for feeding paper, the other conveying belt is used for discharging paper, the copper heat conduction piece is of a hollow structure with two ends having radians, the upper surface of the copper heat conduction piece is flush with the upper surfaces of the conveying belts, a heating pipe is fixed to the inner wall of the copper heat conduction piece in the conveying direction of the conveying belts, and the copper heat conduction piece communicates with an air pump. A plurality of wave-shaped plates are fixed to the positions, away from the heating pipe, in the copper heat conduction piece at intervals, and two inclined plates inclined to each other are integrally installed at the ends, close to the copper heat conduction piece, of the wave-shaped plates. The paper drying device can dry the two faces of paper with ink droplets, separate the paper from hot air, and achieve both paper drying and stable conveying.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing machines, and particularly relates to an inkjet printing device. Background Art

[0002] An inkjet printer is based on digital control technology. The inkjet head moves horizontally above the paper, and the inkjet head shoots ink droplets towards the specified position. These ink droplets combine into a complete pattern, and then are solidified and formed on the conveyor belt after being irradiated by a baking lamp at high temperature.

[0003] There is also a method of drying the ink droplets with high-temperature air flow. For example, in a Chinese utility model with the publication number CN221213153U, an inkjet printing device presses the paper through guide rollers and tension rollers, and then blows refined hot air from above by a hot air drying box to accelerate the drying and forming of the ink droplets.

[0004] After inkjet printing, refined hot air is blown downward onto the paper with ink droplets to prevent the ink droplets from being deformed by the wind. However, both the baking lamp and the refined hot air act on the upper surface of the paper. Especially at the position with ink droplets, the thickness increases significantly, so that the lower surface of the ink droplets cannot be affected by the wind, and the lower surface of the ink droplets is heated slowly, which is not conducive to the rapid drying of both sides of the paper with ink droplets. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an inkjet printing device that can dry both sides of the paper with ink droplets, while separating the paper and the hot air, taking into account both the drying of the paper and the stable conveyance.

[0006] The technical solution adopted by the utility model is specifically as follows:

[0007] An inkjet printing device includes an inkjet head, a linear track, and multiple baking lamps arranged in sequence from top to bottom. Two conveyor belts are horizontally arranged below the inkjet head, and a copper heat conducting member is located between the two conveyor belts. One conveyor belt close to the inkjet head is used for paper loading, and the other conveyor belt is used for paper unloading. The copper heat conducting member is a hollow structure with arcs at both ends. The upper surface of the copper heat conducting member is flush with the upper surface of the conveyor belt. A heating pipe is fixed along the conveying direction of the conveyor belt on the inner wall of the copper heat conducting member. The copper heat conducting member is connected to an air pump. The inkjet head is controlled by a computer to shoot ink flow onto the paper to form a pattern, and then the paper slides along the upper surface of the copper heat conducting member and crosses onto the belt of the other conveyor belt. At the same time, multiple baking lamps are turned on to emit heat waves onto the upper surface of the paper, and the heating pipe and the air pump are started to pump air into the copper heat conducting member. The air is heated by the heating pipe to form hot air, which makes the whole copper heat conducting member heat up, and can transfer heat to the lower surface of the paper, so as to dry both sides of the paper with ink droplets, while separating the paper and the hot air, taking into account both the drying of the paper and the stable conveyance.

[0008] As a preferred solution, a plurality of corrugated plates are fixedly spaced inside the copper heat conducting member away from the heating tube. At one end of each corrugated plate close to the copper heat conducting member, two inclined plates are integrally installed. The two adjacent inclined plates guide the gas blown by the air pump to flow in a zigzag manner. When the hot air enters the inside of the copper heat conducting member and hits the two inclined plates head-on for zigzag flow, it will not directly flow towards the air outlet. Then the hot air is dispersed to the spaces between each corrugated plate and flows in a wavy shape, radiating to the entire copper heat conducting member, which is convenient for the copper heat conducting member to support the paper and uniformly heat the paper at the same time.

[0009] As a preferred solution, a hose is detachably fixed between the output end of the air pump and the air inlet of the copper heat conducting member. The air pump pumps air flow along the hose to the copper heat conducting member. The air pump is fixed on the ground and pumps air flow along the hose to the copper heat conducting member. The hose itself can be bent and deformed, which is convenient for keeping the air path unobstructed and will not significantly pull the copper heat conducting member.

[0010] As a preferred solution, ear plates are integrally installed at the four corners of the upper surface of the copper heat conducting member. The ear plates are all square plates with holes in the middle. The ear plates are used to pass through bolts to fix the copper heat conducting member. All four corners are supported, so that while the copper heat conducting member is suspended between the two conveyor belts, it can be flush with the upper surface of the conveyor belt. The distance between the two ends of the copper heat conducting member and the arc surface of the conveyor belt is less than 0.5 mm to prevent the paper from being stuck.

[0011] As a preferred solution, heat insulation pads are provided on the side of the ear plates away from the baking lamp. The heat insulation pads can be made of rock wool material to separate the frame and the ear plates and slow down the heat transfer of the copper heat conducting member to the frame.

[0012] As a preferred solution, convex portions are integrally installed at the positions on the upper edge of the copper heat conducting member between two adjacent ear plates. Both ends of the two convex portions have rounded corners to limit the paper from both sides and prevent the paper from running off from the gap between the two ear plates, and at the same time strengthen the structural strength of the upper edge of the copper heat conducting member to support the paper more stably.

[0013] As a preferred solution, a hard pipe is connected and fixed to the side of the copper heat conducting member away from the air pump. The hard pipe is used to discharge the tail gas and can be connected to the air conditioning system. At the same time, it can support the copper heat conducting member to facilitate the copper heat conducting member to be suspended more stably.

[0014] The technical effects achieved by the present utility model are:

[0015] The utility model controls an inkjet head by a computer to eject ink onto paper to form a pattern, then slides along the upper surface of a copper heat conducting member and straddles onto the belt of another conveyor. Meanwhile, multiple baking lamps are turned on to emit heat waves onto the upper surface of the paper, and a heating pipe and an air pump are started to pump air into the copper heat conducting member. The heating pipe is used to heat the air to form hot air, so that the overall temperature of the copper heat conducting member rises, and the heat can be transferred to the lower surface of the paper, and the two sides of the paper with ink drops can be dried. At the same time, the paper and the hot air are separated, taking into account both the drying of the paper and the stable conveyance.

[0016] The hot air of the utility model enters the inside of the copper heat conducting member and hits two inclined plates to deflect the flow, so that it will not directly flow to the air outlet. Then the hot air is dispersed to the intervals between each corrugated plate and flows in a wavy shape, radiating to the whole copper heat conducting member, which is convenient for the copper heat conducting member to support the paper and uniformly heat the paper at the same time. Description of the Drawings

[0017] Figure 1 is the front view of an inkjet printing device of the utility model;

[0018] Figure 2 is the front view of the copper heat conducting member of the utility model;

[0019] Figure 3 is the cross-sectional view of the copper heat conducting member of the utility model;

[0020] Figure 4 is the top view of the corrugated plate of the utility model.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Linear track; 2. Inkjet head; 3. Baking lamp; 4. Conveyor; 5. Copper heat conducting member; 6. Heating pipe; 7. Air pump; 8. Corrugated plate; 9. Inclined plate; 10. Hose; 11. Ear plate; 12. Heat insulation pad; 13. Protrusion; 14. Rigid pipe. Detailed Embodiment

[0023] In order to make the purpose and advantages of the utility model clearer, the following specifically describes the utility model with reference to the embodiments. It should be understood that the following text only describes one or several specific implementation manners of the utility model, and does not strictly limit the specific scope of protection requested by the utility model.

[0024] As Figures 1 - 4As shown in the figure, an inkjet printing device with a built-in control main board includes an inkjet head 2, a linear track 1, and multiple baking lamps 3 arranged in sequence from top to bottom. There are two conveyor belts 4 horizontally arranged below the inkjet head 2 and a copper heat conducting member 5 located in the middle of the two conveyor belts 4. One conveyor belt 4 close to the inkjet head 2 is used for paper feeding, and the other conveyor belt 4 is used for paper discharging. The copper heat conducting member 5 is a hollow structure with arcs at both ends. The upper surface of the copper heat conducting member 5 is flush with the upper surface of the conveyor belt 4. A heating tube 6 is fixed along the conveying direction of the conveyor belt 4 on the inner wall of the copper heat conducting member 5. The copper heat conducting member 5 is connected to an air pump 7. The linear track 1, multiple baking lamps 3, and the copper heat conducting member 5 are all fixed on the frame of the conveyor belt 4. The inkjet head 2, the linear track 1, multiple baking lamps 3, two conveyor belts 4, and the air pump 7 are all controlled by the control main board. In this embodiment, guide rollers and tension rollers can be selected to press the paper. This technical solution is prior art and not shown in the figure.

[0025] During feeding, the paper is unrolled and laid flat on the belt of one conveyor belt 4, horizontally transported below the inkjet head 2, and the inkjet head 2 is controlled by a computer to jet ink onto the paper to form a pattern, and then it slides along the upper surface of the copper heat conducting member 5 and crosses onto the belt of the other conveyor belt 4.

[0026] During drying, multiple baking lamps 3 are turned on to emit heat waves onto the upper surface of the paper, and the heating tube 6 and the air pump 7 are started to pump air into the copper heat conducting member 5. The heating tube 6 is used to heat the air to form hot air, so that the overall temperature of the copper heat conducting member 5 rises, which can transfer heat to the lower surface of the paper, and can dry both sides of the paper with ink drops. At the same time, the paper and the hot air are separated to take into account both paper drying and stable transportation.

[0027] Among them, a temperature sensor can be installed at the position of the inner wall of the copper heat conducting member 5 close to the heating tube 6 to monitor the temperature of the hot air, which is convenient to adjust the power of the heating tube 6 in a timely manner to change the heating temperature of the hot air within the set range and prevent the paper from being overheated and burned.

[0028] Refer to the appendix Figure 3 and Figure 4 As shown in the figure, multiple corrugated plates 8 are fixedly installed at intervals at the position of the copper heat conducting member 5 away from the heating tube 6 inside. Two inclined plates 9 that are inclined to each other are integrally installed at one end of each corrugated plate 8 close to the copper heat conducting member 5. The two adjacent inclined plates 9 guide the gas blown by the air pump 7 to flow in a zigzag manner. When the hot air enters the inside of the copper heat conducting member 5, it hits the two inclined plates 9 head-on and flows in a zigzag manner, and will not directly flow to the air outlet. Then the hot air is dispersed to the intervals between the corrugated plates 8 and flows in a wavy shape, radiating to the entire copper heat conducting member 5, which is convenient for the copper heat conducting member 5 to support the paper and uniformly heat the paper.

[0029] Refer to the appendix Figure 1 and Figure 2A hose 10 is detachably fixed between the output end of the air pump 7 and the air inlet of the copper heat conductor 5. The connection method of the port of the hose 10 can be selected from threaded connection or screw fixation. The present embodiment is preferably screw fixation, which does not require disassembly and movement for translation, and requires stronger fixing reliability. The air pump 7 is fixed on the ground, and the air pump 7 pumps air flow to the copper heat conductor 5 along the hose 10. The hose 10 itself can be bent and deformed, which is convenient for keeping the air path unobstructed and will not obviously pull the copper heat conductor 5.

[0030] Refer to the attached Figure 1 and Figure 2 The four corners of the upper surface of the copper heat conductor 5 are integrally installed with ear plates 11. The ear plates 11 are all in the shape of square plates with holes in the middle. The ear plates 11 are used to pass bolts to fix the copper heat conductor 5. The four corners are supported so that the copper heat conductor 5 can be suspended between the two conveyor belts 4 while remaining flush with the upper surface of the conveyor belt 4. The distance between the two ends of the copper heat conductor 5 and the arc surface of the conveyor belt 4 is less than 0.5 mm to prevent paper from getting stuck.

[0031] Refer to the attached Figure 1 and Figure 2 A heat insulating pad 12 is provided on one side of the ear plate 11 away from the baking lamp 3. The heat insulating pad 12 can be made of rock wool to separate the frame and the ear plate 11, thereby slowing down the heat transfer from the copper heat conducting member 5 to the frame.

[0032] Refer to the attached Figure 1 and Figure 2 A protrusion 13 is integrally installed at the position between two adjacent ear plates 11 on the upper edge of the copper heat conductor 5. Both ends of the two protrusions 13 have rounded corners, which limit the paper from both sides to prevent the paper from deviating from the gap between the two ear plates 11, while strengthening the structural strength of the upper edge of the copper heat conductor 5 to support the paper more stably.

[0033] Refer to the attached Figure 2 and Figure 3 The side of the copper heat conductive member 5 away from the air pump 7 is connected and fixed with a hard pipe 14, which is used to discharge exhaust gas and can be connected to the air conditioning system. At the same time, it can support the copper heat conductive member 5, making it convenient for the copper heat conductive member 5 to be suspended more stably.

[0034] The working principle of the utility model is as follows: when working, the paper is unrolled and laid flat on a conveyor belt 4, transported horizontally to the bottom of the inkjet head 2, and the inkjet head 2 is controlled by a computer to spray ink onto the paper to form a pattern, and then slides along the upper surface of the copper heat conductor 5 and crosses to the belt of another conveyor belt 4.

[0035] Meanwhile, multiple baking lamps 3 are turned on to emit heat waves onto the upper surface of the paper, and the heating tube 6 and the air pump 7 are started to pump air into the copper heat conducting member 5. The heating tube 6 is used to heat and form hot air, so that the overall temperature of the copper heat conducting member 5 rises, and the heat can be transferred to the lower surface of the paper, enabling the two sides of the paper with ink droplets to be dried. At the same time, the paper and the hot air are separated, taking into account both the drying of the paper and the stable conveyance.

[0036] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in this field without special explanation and limitation.

Claims

1. An inkjet printing device, comprising an inkjet head (2), a linear track (1), and a plurality of baking lamps (3) sequentially arranged from top to bottom, characterized in that: There are two conveyor belts (4) horizontally arranged below the inkjet head (2) and a copper heat conducting member (5) located between the two conveyor belts (4). One of the conveyor belts (4) close to the inkjet head (2) is used for paper loading, and the other conveyor belt (4) is used for paper unloading. The copper heat conducting member (5) is a hollow structure with arcs at both ends. The upper surface of the copper heat conducting member (5) is flush with the upper surface of the conveyor belt (4) belt. A heating pipe (6) is fixed along the conveying direction of the conveyor belt (4) on the inner wall of the copper heat conducting member (5). The copper heat conducting member (5) is communicated with an air pump (7).

2. The inkjet printing device according to claim 1, wherein: A plurality of corrugated plates (8) are fixedly arranged at intervals at a position inside the copper heat conducting member (5) far from the heating pipe (6). Two inclined plates (9) which are inclined to each other are integrally installed at one end of each corrugated plate (8) close to the copper heat conducting member (5). The two adjacent inclined plates (9) guide the gas blown by the air pump (7) to flow in a zigzag manner.

3. An inkjet printing device according to claim 1, characterized in that: A hose (10) is detachably fixed between the output end of the air pump (7) and the air inlet of the copper heat conducting member (5). The air pump (7) pumps air flow along the hose (10) to the copper heat conducting member (5).

4. An inkjet printing device according to claim 1, characterized in that: Lug plates (11) are integrally installed at the four corners of the upper surface of the copper heat conducting member (5). The lug plates (11) are all square plates with holes in the middle.

5. An inkjet printing device according to claim 4, characterized in that: Heat insulation pads (12) are arranged on one side of the lug plates (11) far from the baking lamp (3).

6. An inkjet printing device according to claim 4, characterized in that: Protrusion parts (13) are integrally installed at positions between two adjacent lug plates (11) on the upper edge of the copper heat conducting member (5). Both ends of the two protrusion parts (13) have rounded corners.

7. An inkjet printing device according to claim 1, characterized in that: A hard pipe (14) is fixedly communicated and installed on one side of the copper heat conducting member (5) far from the air pump (7).

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