Continuous ink supply structure for ink-jet printing equipment and control method of continuous ink supply structure

Abstract

The invention relates to the technical field of ink-jet printing, and particularly discloses a continuous ink supply structure for ink-jet printing equipment and a control method of the continuous ink supply structure. A continuous ink supply structure for ink-jet printing equipment comprises an ink tank, an ink box and a spray head, and further comprises an ink bag, and the ink bag is arranged between the ink box and the spray head and used for transferring transition ink. Ink is fed into the transfer box through the power pump line, then is conveyed to the spray head through the output pump and is transferred through the transfer box, and a certain amount of ink is stored in the transfer box, so that the ink flows to the spray head through the transfer box; even if the ink cannot be fully supplied due to great change of air pressure at the transfer pipeline and the ink pipeline, the ink stored in the transfer box can still be supplemented, so that the ink flows smoothly when entering the output pipeline of the spray head, the condition of ink shortage is avoided, and the condition of color deviation of characters and patterns at the printed position is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of inkjet printing, and in particular relates to a continuous ink supply structure for inkjet printing equipment and a control method thereof. Background Art

[0002] Inkjet printers convert colored liquid ink into tiny particles and spray them onto printing paper through nozzles.

[0003] When using inkjet printing equipment, the ink needs to be pumped out through a pressure pump. The following problems exist during the ink pumping process:

[0004] First, the change in air pressure when the ink is pumped out will cause the flow of the ink to change, which will cause the final amount of ink ejected from the nozzle to be different, and also cause the color of the printed product to be different;

[0005] Secondly, during the ink pumping process, it will be affected by the ambient temperature. Specifically, when the ambient temperature is too high, the viscosity of the ink will decrease, and at the same time, the ink will dry faster, and part of the water in the ink will be converted into gas, which will cause bubbles of different sizes to appear in the ink, and will cause the ink sprayed from the nozzle to be broken and fly. When the ambient temperature is too low, the viscosity of the ink will increase and the fluidity will decrease. This will cause the ink to be sprayed through the nozzle without smoothness and the printed color will be deviant. Therefore, the present application proposes a continuous ink supply structure and a control method for an inkjet printing device. Summary of the invention

[0006] The object of the present invention is to provide a continuous ink supply structure for inkjet printing equipment and a control method thereof to solve the problems raised by the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a continuous ink supply structure for an inkjet printing device, comprising an ink tank, an ink cartridge and a nozzle, and further comprising:

[0008] An ink sac, which is arranged between the ink cartridge and the nozzle and is used for transferring the transition ink;

[0009] The pressure control unit includes a control panel, a pressure monitoring unit and a power pump. An ink pipeline is provided between the ink cartridge and the nozzle. The power pump is used to pump the ink in the ink cartridge to the nozzle via the ink pipeline. The pressure monitoring unit is used to monitor the ink pressure value in the ink pipeline. The control panel is used to collect the pressure value monitored by the pressure monitoring unit and adjust the output power of the power pump according to the pressure value so that the ink ejected from the nozzle is continuous.

[0010] Preferably, the pressure control unit includes a pressure sensor and a pressure relief valve. The pressure sensor is used to measure the pressure value of the ink in the ink pipeline, and the pressure relief valve is used to reduce the pressure in the ink pipeline; the ink cartridge is connected to an ink volume sensor, and the ink volume sensor is used to measure the liquid volume of the ink in the ink cartridge.

[0011] Preferably, the ink tank contains a plurality of ink cartridges;

[0012] The ink cartridge is connected to the power pump, the power pump is connected to the transfer box through the transfer pipeline, and the transfer box is connected to the nozzle through the output pipeline;

[0013] The transfer box is provided with a temperature control chamber and a transfer chamber, the temperature control chamber is filled with a temperature control liquid, and the transfer chamber is used to store ink;

[0014] A heat exchange unit is arranged in the temperature control chamber, and the heat exchange unit includes a temperature control device for controlling the temperature of the temperature control liquid. A partition is arranged between the temperature control chamber and the transfer chamber, and a heat conduction plate is installed on the partition;

[0015] A bubble elimination unit is arranged in the transfer chamber, and the bubble elimination unit comprises a bubble elimination needle. The portion of the output pipe inserted into the transfer chamber is provided with an ink suction port, and the bubble elimination needle is arranged around the ink suction port.

[0016] Preferably, the output pipe is against the inner wall of the transfer chamber, and the ink suction port is arranged on the side wall of the output pipe, the debubbling needles are distributed in a circular array around the center line of one end of the output pipe inserted into the transfer chamber, and the debubbling needles are fixedly mounted on the mounting ring, and a piercing portion is provided on the side of the debubbling needle away from the output pipe.

[0017] Preferably, the plurality of mounting rings are evenly spaced above and below, and the mounting rings are fixedly mounted on the vertical plate, the two ends of the vertical plate are respectively connected to the lower support seat and the upper support ring, the lower support seat is connected to the inner wall of the transfer box by bolts, the side wall of the upper support ring is in contact with the outer wall of the output pipe, and a sealing gasket is installed on the side of the upper support ring in contact with the output pipe.

[0018] Preferably, a plurality of anti-solidification stirring units are arranged in the transfer chamber, and two anti-solidification stirring units are arranged. The anti-solidification stirring units include a stirring shaft, which is inserted into the transfer box, and spirally distributed stirring blades are welded on the bottom of the stirring shaft.

[0019] Preferably, the bottom of the stirring shaft is inserted into the base, the base is screwed into the body of the transfer box by bolts, the top of the stirring shaft is connected to the output shaft of the stirring motor, and the stirring motor is connected to the outer wall of the transfer box through a motor bracket.

[0020] Preferably, one end of the heat conducting plate is in contact with the temperature control liquid, and the other end of the heat conducting plate is inserted into the transfer cavity, and a plurality of heat conducting fins are installed on the end of the heat conducting plate inserted into the transfer cavity.

[0021] Preferably, a cleaning unit is installed on the transfer box, and the cleaning unit includes a water inlet pipe, the water inlet pipe is connected to a first branch pipe, the first branch pipe is aligned with the bubble elimination unit, the water inlet pipe is connected to two second branches, the second branches are connected to a spraying member, the spraying member is aligned with two anti-solidification stirring units, and a drainage pipe is installed at the bottom of the transfer box.

[0022] A control method for a continuous ink supply structure for an inkjet printing device, the control method comprising the following steps:

[0023] Step 1: Turn the tank cover to cover the ink cartridge in the ink tank. During the closing process of the tank cover, a pressure sensor is used to detect whether the tank cover is closed.

[0024] Step 2: Use a power pump to pump the ink in the ink cartridge into a transfer box connected to the power pump. During the process of pumping the ink, the pressure in the ink pipeline is monitored in real time by a pressure sensor, and the pressure in the ink pipeline is stabilized by a pressure relief valve.

[0025] Step 3: Start the heat exchange unit to exchange heat between the temperature control liquid and the ink through the heat conduction plate, so that the ink in the transfer chamber is within the set temperature value;

[0026] Step 4: The ink in the transfer chamber passes through the bubble elimination unit into the output pipe, is pumped into the nozzle by the output pump, and is ejected through the nozzle; in the process of the ink passing through the bubble elimination unit, the bubbles in the ink are punctured by the debubbling needle in the bubble elimination unit.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The ink of the present invention is delivered to the interior of the transfer box via a power pump line, and then delivered to the nozzle via an output pump. After being transferred in the transfer box, a certain amount of ink is stored in the transfer box. In this way, during the process of the ink flowing to the nozzle via the transfer box, even if there is a significant change in air pressure in the transfer pipeline and the ink pipeline, resulting in insufficient ink supply, the ink stored in the transfer box can still be replenished, so that the ink can flow smoothly when it enters the output pipeline of the nozzle, and there will be no ink interruption, and the text and pattern at the printed location will not have color deviation.

[0029] 2. The present invention arranges a heat exchange unit in the transfer box, and the transfer box is divided into a temperature control chamber and a transfer chamber. The temperature control chamber is filled with temperature control liquid, and the transfer chamber stores ink when working. The temperature control device arranged in the temperature control chamber is used to control the temperature of the temperature control liquid, and the temperature control liquid and the ink exchange heat through the heat conduction plate. Through the above-mentioned heat exchange, the ink in the transfer chamber is kept within the set temperature range, so that the ink maintains stable fluidity and avoids the situation of ink breakage and ink flying when the ink is sprayed out of the nozzle due to temperature changes.

[0030] 3. In the present invention, the ink in the transfer chamber passes through the bubble elimination unit and enters the output pipe, is pumped into the nozzle by the output pump, and is ejected through the nozzle; in the process of the ink passing through the bubble elimination unit, the bubbles in the ink are punctured by the defoaming needle in the bubble elimination unit, thereby avoiding the mixing of bubbles in the ink transported to the nozzle and ejected, and avoiding the flying of ink caused by the explosion of bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a system diagram of the continuous ink supply structure used in the inkjet printing device of the present invention.

[0032] Figure 2 It is a schematic structural diagram of the continuous ink supply structure for the inkjet printing device in the present invention.

[0033] Figure 3 It is a rear view of the continuous ink supply structure for the inkjet printing device in the present invention.

[0034] Figure 4 It is a side view of the continuous ink supply structure for the inkjet printing device in the present invention.

[0035] Figure 5 It is a schematic diagram of the structure of the transfer box in the present invention.

[0036] Figure 6 It is a structural schematic diagram of the temperature control chamber in the present invention.

[0037] Figure 7 It is a schematic diagram of the internal structure of the transfer box in the present invention.

[0038] Figure 8 It is a schematic diagram of the internal structure of the anti-solidification stirring unit in the present invention.

[0039] Fig. 9 It is a schematic diagram of the structure of the defoaming needle in the present invention.

[0040] Fig.10 It is a schematic diagram of the structure of the cleaning unit in the present invention.

[0041] In the figure: 1, ink tank; 2, ink cartridge; 3, tank cover; 4, power pump; 5, transfer box; 501, temperature control chamber; 502, transfer chamber; 6, output pipeline; 601, ink suction port; 7, nozzle; 8, transfer pipeline; 9, pressure sensor; 10, pressure sensor; 11, heat exchange unit; 1101, temperature control device; 1102, heat conduction plate; 1103, heat conduction fins;

[0042] 12. Anti-curing stirring unit; 1201. Stirring shaft; 1202. Stirring blade; 1203. Base; 1204. Stirring motor; 13. Bubble elimination unit; 1301. Lower support seat; 1302. Upper support ring; 1303. Sealing pad; 1304. Vertical plate; 1305. Defoaming needle;

[0043] 14. Cleaning unit; 1401. Water inlet pipe; 1402. First branch pipe; 1403. Spraying part; 1404. Drain pipe; 15. Output pump; 16. Ink level sensor. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Reference Figure 1-Figure 10 A continuous ink supply structure for an inkjet printing device, comprising an ink tank 1, an ink cartridge 2 and a nozzle 7, and further comprising:

[0046] Ink sac, which is arranged between the ink cartridge 2 and the nozzle 7 and is used for transferring the transition ink;

[0047] The pressure control unit includes a control board, a pressure monitoring unit and a power pump 4. An ink pipeline is provided between the ink cartridge 2 and the nozzle 7. The power pump 4 is used to pump the ink in the ink cartridge 2 to the nozzle 7 via the ink pipeline. The pressure monitoring unit is used to monitor the ink pressure value in the ink pipeline. The control board is used to collect the pressure value monitored by the pressure monitoring unit, and adjust the output power of the power pump 4 according to the pressure value, so that the ink sprayed from the nozzle 7 is continuous.

[0048] The pressure control unit includes a pressure sensor 10 and a pressure relief valve. The pressure sensor 10 is used to measure the pressure value of the ink in the ink pipeline, and the pressure relief valve is used to reduce the pressure in the ink pipeline; the ink cartridge 2 is connected to an ink volume sensor 16, and the ink volume sensor 16 is used to measure the liquid volume of the ink in the ink cartridge 2. The ink is a kind of ink;

[0049] It should be noted that the pressure sensor 10 is used to measure the air pressure in the ink pipeline and to monitor the air pressure in the ink pipeline in real time, so as to facilitate checking the situation in the ink pipeline. One end of the ink pipeline is connected to the ink cartridge 2, and the other end of the ink pipeline is connected to the power pump 4. A pressure relief valve is also installed on the ink pipeline. The pressure relief valve is used to keep the pressure in the ink pipeline at a stable value during the flow of ink to avoid excessive pressure.

[0050] A plurality of ink cartridges 2 are stored in the ink tank 1. In order to fix the position of the ink cartridge 2, the ink cartridge 2 is tightly plugged into the ink tank 1, and a soft material needs to be bonded to the position where the ink cartridge 2 is stored in the ink tank 1 to prevent the ink cartridge 2 from scratching the inner wall of the ink tank 1 during the process of entering and exiting. A tank cover 3 is hinged on the ink tank 1. It should be noted that a pressure sensor 9 is provided at the position of the ink tank 1 corresponding to the tank cover 3. In the process of the tank cover 3 covering the ink tank 1, as the tank cover 3 is closed, after closing to a certain angle, the tank cover 3 will squeeze the pressure sensor 9 to shrink it inwardly. Finally, the tank cover 3 closes the entire ink tank 1, and the pressure sensor 9 is squeezed by the tank cover 3 and shrinks inwardly, indicating that the tank cover 3 is closed. At this time, the ink cartridge 2 is inside the cavity formed by the ink tank 1 and the tank cover 3.

[0051] Furthermore, the ink cartridge 2 is connected to the power pump 4, which is connected to the transfer box 5 through the transfer pipe 8, and the transfer box 5 is connected to the nozzle 7 through the output pipe 6. During the inkjet printing process, the ink is pumped out of the ink cartridge 2 by the power pump 4, and then the ink enters the interior of the transfer box 5 through the transfer pipe 8, and then the ink is transported to the position of the nozzle 7 through the output pipe 6 and the output pump 15 in the transfer box 5, and finally ejected from the nozzle 7, and the ejected ink forms corresponding text and patterns. The ink is delivered to the interior of the transfer box 5 via the power pump 4 line, and then delivered to the nozzle 7 via the output pump 15. After the transfer in the transfer box 5, a certain amount of ink is stored in the transfer box 5. In this way, during the process of the ink flowing to the nozzle 7 via the transfer box 5, even if there is a drastic change in the air pressure in the transfer pipe 8 and the ink pipe, resulting in an insufficient supply of ink, the ink stored in the transfer box 5 can still be replenished, so that the ink can flow smoothly when it enters the output pipe 6 of the nozzle 7, and there will be no ink interruption. The text and pattern at the printed location will not have color deviation. A liquid level detector is arranged inside the transfer box 5 to monitor the liquid level height of the ink in the transfer box 5 in real time.

[0052] The transfer box 5 is used to store the ink pumped out from the ink cartridge 2. When the ambient temperature is too high, the viscosity of the ink will decrease, and the drying speed of the ink will increase. Part of the water in the ink will be converted into gas, which will cause bubbles of different sizes to appear in the ink, and will cause the ink sprayed from the nozzle 7 connected to the transfer box 5 to be broken or flying. When the temperature inside the transfer box 5 is too low, the viscosity of the ink will increase and the fluidity will decrease. This will cause the ink to be insufficiently smooth when sprayed through the nozzle 7, resulting in deviations in the printed color. In order to solve the problem caused by external temperature changes, a temperature control chamber 501 and a transfer chamber 502 are provided in the transfer box 5. The temperature control chamber 501 is filled with a temperature control liquid. The temperature control liquid can be water, but if water is used, it needs to be replaced regularly to prevent scale and other impurities in the water from solidifying inside the temperature control chamber 501. The transfer chamber 502 is used to store ink.

[0053] Specifically, a heat exchange unit 11 is provided in the temperature control chamber 501, and the heat exchange unit 11 is used to realize the heat exchange between the temperature control liquid in the temperature control chamber 501 and the ink in the transfer chamber 502. The heat exchange unit 11 includes a temperature control device 1101 for controlling the temperature of the temperature control liquid. The temperature control device 1101 is used to control the temperature of the temperature control liquid at a temperature suitable for the ink. The suitable temperature of the ink is 15°-30°, and the temperature of the temperature control liquid needs to be between 19°-30°. A partition is provided between the temperature control chamber 501 and the transfer chamber 502, and a heat conducting plate 1102 is installed on the partition. One end of the heat conducting plate 1102 is in contact with the temperature control liquid, and the other end of the heat conducting plate 1102 is inserted into the transfer chamber 502, and a plurality of heat conducting fins 1103 are installed at the end of the heat conducting plate 1102 inserted into the transfer chamber 502.

[0054] In order to prevent the ink in the transfer chamber 502 from solidifying, a plurality of anti-solidification stirring units 12 are arranged in the transfer chamber 502. Two anti-solidification stirring units 12 are arranged. The anti-solidification stirring units 12 include a stirring shaft 1201. The stirring shaft 1201 is inserted into the transfer box 5. Spiral-distributed stirring blades 1202 are welded at the bottom of the stirring shaft 1201. The bottom of the stirring shaft 1201 is inserted into the base 1203. The base 1203 is screwed into the body of the transfer box 5 by bolts. The top of the stirring shaft 1201 is connected to the output shaft of the stirring motor 1204. The stirring motor 1204 is connected to the outer wall of the transfer box 5 through a motor bracket.

[0055] When the anti-solidification stirring unit 12 is started, the stirring motor 1204 inside it can drive the stirring shaft 1201 and the stirring blades 1202 to rotate, thereby stirring the ink in the transfer box 5 to prevent the ink from solidifying.

[0056] In order to prevent the bubbles in the ink from entering the output pipe 6 along with the ink, causing the ink sprayed from the nozzle 7 to fly, a bubble elimination unit 13 is provided in the transfer chamber 502, and the bubble elimination unit 13 includes a debubble needle 1305. The part of the output pipe 6 inserted into the transfer chamber 502 is provided with an ink suction port 601, and the debubble needle 1305 is arranged around the ink suction port 601. It should be noted that the output pipe 6 is against the inner wall of the transfer chamber 502, and the ink suction port 601 is provided on the side wall of the output pipe 6. The debubble needles 1305 are distributed in a circular array around the center line of one end of the output pipe 6 inserted into the transfer chamber 502, and the debubble needles 1305 are fixedly mounted on the mounting ring, and the debubble needle 1305 is provided with a bubble piercing portion on the side away from the output pipe 6.

[0057] Specifically, multiple mounting rings are evenly spaced above and below, and the mounting rings are fixedly mounted on the vertical plate 1304. The two ends of the vertical plate 1304 are respectively connected to the lower support seat 1301 and the upper support ring 1302. The lower support seat 1301 is connected to the inner wall of the transfer box 5 by bolts. The side wall of the upper support ring 1302 is in contact with the outer wall of the output pipe 6, and a sealing gasket 1303 is installed on the side of the upper support ring 1302 that is in contact with the output pipe 6.

[0058] After printing is completed, the transfer chamber 502 needs to be cleaned to remove the ink adhered to the inside of the transfer chamber 502. Therefore, a cleaning unit 14 is installed on the transfer box 5. The cleaning unit 14 includes a water inlet pipe 1401. The water inlet pipe 1401 is connected to a first branch pipe 1402. The first branch pipe 1402 is aligned with the bubble elimination unit 13. The water inlet pipe 1401 is connected to two second branches. The second branches are connected to a spraying member 1403. The spraying member 1403 is aligned with two anti-curing stirring units 12. A drainage pipe 1404 is installed at the bottom of the transfer box 5.

[0059] The cleaning unit 14 is used to clean the transfer chamber 502 after printing is completed. The first branch pipe 1402 and the spraying member 1403 therein are respectively aimed at the bubble elimination unit 13 and the anti-solidification stirring unit 12, and cooperate with other outlets to flush the interior of the transfer chamber 502 to remove the ink adhered to the inside of the transfer chamber 502.

[0060] A control method for a continuous ink supply structure for an inkjet printing device comprises the following steps:

[0061] Step 1: Rotate the tank cover 3 to cover the ink cartridge 2 in the ink tank 1. During the closing process of the tank cover 3, the pressure sensor 9 detects whether the tank cover 3 is closed.

[0062] Step 2: The ink in the ink cartridge 2 is pumped into the transfer box 5 connected to the power pump 4 by the power pump 4. During the process of pumping the ink, the air pressure in the ink pipeline is monitored in real time by the pressure sensor 10, and the air pressure in the ink pipeline is stabilized by the pressure relief valve;

[0063] Step 3: Start the heat exchange unit 11 to exchange heat between the temperature control liquid and the ink through the heat conduction plate 1102, so that the ink in the transfer chamber 502 is within the set temperature value;

[0064] Step 4: The ink in the transfer chamber 502 passes through the bubble elimination unit 13 and enters the output pipe 6, is pumped into the nozzle 7 through the output pump 15, and is ejected through the nozzle 7; in the process of the ink passing through the bubble elimination unit 13, the bubbles in the ink are punctured by the debubbling needle 1305 in the bubble elimination unit 13.

[0065] Working principle:

[0066] During the inkjet printing process, the ink is pumped out of the ink cartridge 2 by the power pump 4, and then the ink enters the interior of the transfer box 5 through the transfer pipe 8. Thereafter, the ink is transported to the position of the nozzle 7 through the output pipe 6 and the output pump 15 in the transfer box 5, and finally ejected from the nozzle 7. The ejected ink forms corresponding text and patterns.

[0067] The ink is delivered to the interior of the transfer box 5 via the power pump 4 line, and then delivered to the nozzle 7 via the output pump 15. After the transfer in the transfer box 5, a certain amount of ink is stored in the transfer box 5. In this way, during the process of the ink flowing to the nozzle 7 via the transfer box 5, even if there is a drastic change in the air pressure in the transfer pipe 8 and the ink pipe, resulting in an insufficient supply of ink, the ink stored in the transfer box 5 can still be replenished, so that the ink can flow smoothly when it enters the output pipe 6 of the nozzle 7, and there will be no ink interruption. The text and pattern at the printed location will not have color deviation. A liquid level detector is arranged inside the transfer box 5 to monitor the liquid level height of the ink in the transfer box 5 in real time.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous ink supply structure for an inkjet printing device, comprising an ink tank (1), an ink cartridge (2) and a nozzle (7), characterized in that: Also includes: An ink sac, the ink sac being arranged between the ink cartridge (2) and the nozzle (7), and being used for transferring transition ink; A pressure control unit, the pressure control unit comprising a control panel, a pressure monitoring unit and a power pump (4); an ink pipeline is provided between the ink cartridge (2) and the nozzle (7); the power pump (4) is used to pump the ink in the ink cartridge (2) to the nozzle (7) via the ink pipeline; the pressure monitoring unit is used to monitor the ink pressure value in the ink pipeline; the control panel is used to collect the pressure value monitored by the pressure monitoring unit, and adjust the output power of the power pump (4) according to the pressure value, so that the ink ejected from the nozzle (7) is continuous.

2. A continuous ink supply structure for inkjet printing equipment according to claim 1, characterized in that: The pressure control unit comprises a pressure sensor (10) and a pressure relief valve, wherein the pressure sensor (10) is used to measure the pressure value of ink in the ink pipeline, and the pressure relief valve is used to reduce the pressure in the ink pipeline; the ink cartridge (2) is connected to an ink volume sensor (16), and the ink volume sensor (16) is used to measure the liquid volume of ink in the ink cartridge (2).

3. A continuous ink supply structure for inkjet printing equipment according to claim 1, characterized in that: A plurality of ink cartridges (2) are stored in the ink tank (1); The ink cartridge (2) is connected to a power pump (4), the power pump (4) is connected to a transfer box (5) through a transfer pipe (8), and the transfer box (5) is connected to a nozzle (7) through an output pipe (6); The transfer box (5) is provided with a temperature control chamber (501) and a transfer chamber (502), the temperature control chamber (501) is filled with a temperature control liquid, and the transfer chamber (502) is used to store ink; A heat exchange unit (11) is arranged in the temperature control chamber (501), the heat exchange unit (11) comprises a temperature control device (1101) for controlling the temperature of the temperature control liquid, a partition is arranged between the temperature control chamber (501) and the transfer chamber (502), and a heat conduction plate (1102) is installed on the partition; A bubble elimination unit (13) is arranged in the transfer chamber (502), and the bubble elimination unit (13) includes a bubble elimination needle (1305). The part of the output pipe (6) inserted into the transfer chamber (502) is provided with an ink suction port (601), and the bubble elimination needle (1305) is arranged around the ink suction port (601).

4. A continuous ink supply structure for inkjet printing equipment according to claim 3, characterized in that: The output pipe (6) is against the inner wall of the transfer chamber (502), and the ink suction port (601) is arranged on the side wall of the output pipe (6). The defoaming needles (1305) are arranged in a circular array around the center line of one end of the output pipe (6) inserted into the transfer chamber (502), and the defoaming needles (1305) are fixedly mounted on the mounting ring, and a bubble piercing portion is arranged on the side of the defoaming needle (1305) away from the output pipe (6).

5. A continuous ink supply structure for inkjet printing equipment according to claim 4, characterized in that: The plurality of mounting rings are evenly spaced up and down, and are fixedly mounted on the vertical plate (1304). The two ends of the vertical plate (1304) are respectively connected to the lower support seat (1301) and the upper support ring (1302). The lower support seat (1301) is connected to the inner wall of the transfer box (5) by bolts. The side wall of the upper support ring (1302) is in contact with the outer wall of the output pipe (6), and a sealing gasket (1303) is installed on the side of the upper support ring (1302) in contact with the output pipe (6).

6. A continuous ink supply structure for inkjet printing equipment according to claim 3, characterized in that: A plurality of anti-solidification stirring units (12) are arranged in the transfer chamber (502), wherein two anti-solidification stirring units (12) are arranged, and the anti-solidification stirring units (12) comprise a stirring shaft (1201), wherein the stirring shaft (1201) is inserted into the transfer box (5), and spirally distributed stirring blades (1202) are welded to the bottom of the stirring shaft (1201).

7. A continuous ink supply structure for inkjet printing equipment according to claim 6, characterized in that: The bottom of the stirring shaft (1201) is inserted into the base (1203), and the base (1203) is screwed into the body of the transfer box (5) by bolts. The top of the stirring shaft (1201) is connected to the output shaft of the stirring motor (1204), and the stirring motor (1204) is connected to the outer wall of the transfer box (5) through a motor bracket.

8. A continuous ink supply structure for inkjet printing equipment according to claim 3, characterized in that: One end of the heat conducting plate (1102) is in contact with the temperature control liquid, and the other end of the heat conducting plate (1102) is inserted into the transfer cavity (502), and a plurality of heat conducting fins (1103) are installed on the end of the heat conducting plate (1102) inserted into the transfer cavity (502).

9. A continuous ink supply structure for inkjet printing equipment according to claim 3, characterized in that: The transfer box (5) is provided with a cleaning unit (14), the cleaning unit (14) comprising a water inlet pipe (1401), the water inlet pipe (1401) being connected to a first branch pipe (1402), the first branch pipe (1402) being aligned with the bubble elimination unit (13), the water inlet pipe (1401) being connected to two second branch pipes, the second branch pipes being connected to a spraying member (1403), the spraying member (1403) being aligned with two anti-solidification stirring units (12), and a drainage pipe (1404) being provided at the bottom of the transfer box (5).

10. A control method for a continuous ink supply structure for an inkjet printing device according to any one of claims 1 to 9, characterized in that: The control method comprises the following steps: Step 1: Turn the tank cover (3) to cover the ink cartridge (2) in the ink tank (1); Step 2: The ink in the ink cartridge (2) is pumped into the interior of a transfer box (5) connected to the power pump (4) by means of a power pump (4). During the process of pumping the ink, the air pressure in the ink pipeline is monitored in real time by means of a pressure sensor (10), and the air pressure in the ink pipeline is stabilized by means of a pressure relief valve; Step 3: Start the heat exchange unit (11) to exchange heat between the temperature control liquid and the ink through the heat conduction plate (1102), so that the ink in the transfer chamber (502) is within a set temperature value; Step 4: The ink in the transfer chamber (502) passes through the bubble elimination unit (13) and enters the output pipe (6), is pumped into the nozzle (7) through the output pump (15), and is ejected through the nozzle (7); in the process of the ink passing through the bubble elimination unit (13), the bubbles in the ink are punctured by the debubbling needle (1305) in the bubble elimination unit (13).

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