An integrated siphon ink supply device with an integrated main and sub-ink cartridges

Abstract

The present invention discloses an integrated siphon ink supply device with an integrated main and sub-ink cartridges, which includes a main ink cartridge, an installation box for installing the main ink cartridge, a sub-ink cartridge, and a fixing seat for fixing the sub-ink cartridge. The fixing seat is connected to the installation box; the bottom of the main ink cartridge is installed on the installation box, and an ink pump, an air pump, a solenoid valve, and a PCBA control panel electrically connected to the ink pump, the air pump, and the solenoid valve are respectively fixed in the installation box. A pipeline is connected between the main ink cartridge and the ink pump and the solenoid valve. A processing hole is provided in the upper part of the sub-ink cartridge, and the ink pump is connected to the processing hole of the sub-ink cartridge through a pipeline; the fixing seat includes an upper fixing seat and a lower fixing seat. A sub-ink cartridge and a safety bottle are hermetically connected between the upper fixing seat and the lower fixing seat. The sub-ink cartridge and the safety bottle are communicated through the lower fixing seat. The lower fixing seat is respectively provided with a print head and an exhaust nozzle. In the present invention, the main ink cartridge and the sub-ink cartridge are integrally arranged, and there is a safety bottle for preventing ink leakage. The whole ink supply system is small in volume and convenient for installation and erection.

Description

Technical Field

[0001] The present invention relates to the field of industrial identification inkjet coding, and particularly to an integrated siphon ink supply device with an integrated main and auxiliary ink cartridges. Background Art

[0002] For an industrial inkjet coder to operate continuously, it is necessary to provide a stable and continuous ink supply, and at the same time ensure the negative pressure requirements of the printing nozzle for the ink supply system. The main ink supply methods for industrial inkjet coders are mainly electronic negative pressure and siphon ink supply. Electronic negative pressure requires devices such as a vacuum pump and valves to form a negative pressure generation system, and realizes the required negative pressure for entering the printing nozzle through the control of the vacuum pump and valves and real-time pressure detection; siphon ink supply is a relatively traditional and simple ink supply system that realizes the required negative pressure for the printing nozzle through the height difference between the liquid level in the auxiliary ink cartridge communicating with the atmosphere and the surface of the printing nozzle.

[0003] A commonly used existing siphon ink supply system at present pumps ink from the main ink cartridge to the auxiliary ink cartridge through an ink pump. There is a liquid level detection switch in the auxiliary ink cartridge to maintain the internal liquid level height. At the same time, the liquid level of the auxiliary ink cartridge is kept higher than the surface of the printing nozzle (height difference) through erection, and this height difference corresponds to the required negative pressure of the printing nozzle. Specifically, in actual applications, it is more common to have the main and auxiliary ink cartridges separated or integrated.

[0004] The above existing solutions have the following problems: For the traditional siphon type with separated main and auxiliary ink cartridges, the main ink cartridge is lower than the auxiliary ink cartridge and is generally placed on the ground, increasing the complexity of on-site installation and erection; for the siphon ink cartridges with integrated main and auxiliary ink cartridges, the main ink cartridge generally uses a vacuum bag. Since the vacuum ink bag does not have a liquid level detection function, it needs to be pumped to a secondary ink cartridge with liquid level detection through an ink pump, and then pumped to the auxiliary ink cartridge by another ink pump. In this way, the ink supply system is large in volume and low in integration. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated siphon ink supply device with an integrated main and auxiliary ink cartridges to solve the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: An integrated siphon ink supply device with an integrated main and sub-ink cartridges, including a main ink cartridge, an installation box for installing the main ink cartridge, further including a sub-ink cartridge and a fixing seat for fixing the sub-ink cartridge, the fixing seat is connected to the installation box; the installation box includes a bottom plate, a top plate, side plates and a baffle plate, the side plates are symmetrically arranged on both sides of the bottom plate, the baffle plate is connected between the two side plates and is located on the side of the bottom plate away from the sub-ink cartridge, the top plate is arranged at the top between the two side plates, the top plate, the side plates and the baffle plate are detachably arranged, there is an installation opening in the middle of the top plate, the bottom of the main ink cartridge is installed in the installation opening and the periphery is locked on the top plate by flat head bolts, there is a stirring mechanism at the bottom of the main ink cartridge to prevent white ink from forming in the main ink cartridge, a ink pump, an air pump, an electromagnetic valve, and a PCBA control panel electrically connected to the ink pump, the air pump, and the electromagnetic valve are respectively fixed in the installation box, the main ink cartridge is connected to the electromagnetic valve through a pipeline between the ink pump, the upper part of the sub-ink cartridge is provided with a connection hole, and the ink pump is connected to the connection hole of the sub-ink cartridge through a pipeline;

[0007] The fixing seat includes an upper fixing seat and a lower fixing seat, a sub-ink cartridge and a safety bottle are hermetically connected between the upper fixing seat and the lower fixing seat, the sub-ink cartridge and the safety bottle are communicated through the upper fixing seat, the sub-ink cartridge is hollowly arranged to form an ink chamber, the safety bottle is hollowly arranged to form a safety chamber, the bottom of the upper fixing seat extends into the ink chamber and the safety chamber respectively to be provided with liquid level detection switches, and an alarm indicator light electrically connected to the liquid level detection switches is arranged on the top of the upper fixing seat, the lower fixing seat is respectively provided with a printing nozzle and an exhaust nozzle, the top end of the printing nozzle is located in the ink chamber, and the top end of the exhaust nozzle is located in the safety chamber.

[0008] Preferably, the upper fixing seat is provided with a processing hole, the processing hole extends into the upper fixing seat, and the upper fixing seat is respectively provided with a sub-ink cartridge communication hole and a safety bottle communication hole communicated with the processing hole at the top positions of the ink chamber and the safety chamber. Preferably, the lower fixing seat is provided with a processing hole, the second processing hole extends into the lower fixing seat, and the lower fixing seat is respectively provided with a second sub-ink cartridge communication hole and a second safety bottle communication hole communicated with the second processing hole at the bottom of the ink chamber and the safety chamber, the bottom of the safety bottle is provided with a ink discharging pressure assembly, the ink discharging pressure assembly includes a base sleeve and a sealing cover, the base sleeve includes a mounting plate fixed to the bottom of the safety bottle and a sleeve arranged on the mounting plate and extending into the safety chamber, a ring groove is arranged at the top of the sleeve, the bottom of the sealing cover is provided with a ring plate for clamping into the ring groove, and a tension assembly elastically connected to the bottom of the ring groove is arranged at the bottom of the ring plate, and a plurality of ink inlet holes are arranged along the circumference on the inner side of the sealing cover where the ring plate is located.

[0009] Preferably, multiple sets of tension components are arranged along the circumference of the annular plate. The tension component includes a spring fixedly arranged at the bottom of the annular plate and a positioning plate. The positioning plate is fixedly arranged at the end of the spring away from the annular plate. A card slot for the positioning plate to be stuck into is downwardly opened on the inner wall of the bottom of the annular groove, and a limiting groove for the positioning plate to turn into extends from the bottom of the card slot to one side.

[0010] Preferably, a boosting rod extends downward from the bottom of the annular plate, and multiple boosting rods are arranged corresponding to the springs. The bottom end of the boosting rod extends to one side of the positioning plate and abuts against the positioning plate.

[0011] Preferably, the stirring mechanism includes a stirring motor, a rotating block and a magnetic float. A fixing block is fixed to the bottom of the main ink cartridge through a copper column. The stirring motor is fixed on the fixing block. The output end of the stirring motor penetrates through the fixing block and extends upward to the bottom of the main ink cartridge. A rotating block is fixed to the top of the output end of the stirring motor. The magnetic float is arranged inside the main ink cartridge and is magnetically connected to the rotating block.

[0012] Preferably, base rods are fixed to the four corners of the bottom plate through bolts. The cross-section of the base rod is L-shaped. Strip-shaped slots are vertically arranged at both outer ends of the base rod. The baffle plate and the side plate slide into the space between the two base rods through the strip-shaped slots on the base rods. The four corners of the top plate are screwed and fixed to the four base rods through bolts.

[0013] Preferably, a bayonet for the sub-ink cartridge and the safety bottle to be inserted into is arranged on one side of the top plate close to the sub-ink cartridge, and a resisting block for abutting against the sub-ink cartridge and the safety bottle is arranged inside the bayonet. The fixing block is provided with a stepped groove for clamping the outer end of the bottom plate. The bottom plate is fixed to the fixing block by bolts passing through and screwing into the stepped groove. A docking plate is arranged in the card slot of the base rod on one side of the bottom plate close to the sub-ink cartridge, and the docking plate is used for abutting against the side end faces of the sub-ink cartridge and the safety bottle.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] In the present invention, the main ink cartridge and the sub-ink cartridge are integrally detachably arranged through the installation box. An electromagnetic valve is arranged between the main ink cartridge and the sub-ink cartridge to ensure that the ink will not flow into the sub-ink cartridge due to the height difference. The whole ink supply system is small in volume and convenient to install. By arranging a safety bottle, the safety bottle is communicated with the main and sub-ink cartridges through a processing hole, and a drain pressure component is arranged in the safety bottle. When the liquid level detection switch in the sub-ink cartridge fails and the ink is added to a certain height in the sub-ink cartridge, it can be drained into the safety bottle to prevent the ink pressure in the sub-ink cartridge from being too large and overflowing. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is the structural schematic diagram of the whole of this embodiment;

[0018] Figure 2 is the exploded schematic diagram of the whole structure of this embodiment;

[0019] Figure 3 is the explanatory schematic diagram highlighting the communication hole of the sub-cartridge and the communication hole of the safety bottle in this embodiment;

[0020] Figure 4 is the exploded schematic diagram highlighting the relationship between the safety bottle and the pressure assembly in this embodiment;

[0021] Figure 5 is the exploded schematic diagram highlighting the pressure assembly in this embodiment.

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. Main cartridge; 2. Installation box; 201. Bottom plate; 202. Top plate; 203. Side plate; 204. Baffle; 3. Sub-cartridge; 4. Installation port; 5. Ink pump; 6. Air pump; 7. Solenoid valve; 8. PCBA control panel; 10. Sealing ring; 11. Upper fixing seat; 12. Lower fixing seat; 13. Safety bottle; 14. Ink chamber; 15. Safety chamber; 16. Liquid level detection switch; 17. Alarm indicator light; 18. Print head; 19. Exhaust nozzle; 20. Sub-cartridge communication hole; 21. Safety bottle communication hole; 22. Ink discharge pressure assembly; 221. Base sleeve; 2211. Installation plate; 2212. Sleeve; 222. Sealing cover; 23. Annular groove; 24. Annular plate; 25. Tension assembly; 251. Spring; 252. Positioning plate; 26. Ink inlet hole; 27. Card slot; 28. Limit slot; 29. Boosting rod; 30. Stirring mechanism; 301. Stirring motor; 302. Rotating block; 303. Magnetic float; 31. Fixed block; 32. Base rod; 33. Strip-shaped slot; 34. Block; 35. Step groove; 36. Docking plate; 37. Ink tank fixing plate; 38. Liquid level alarm device; 39. Two-way solenoid valve; 40. Air inlet; 41. Sheet metal part. Detailed implementation manners

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-5 , the present invention provides a technical solution: an integrated siphon ink supply device with an integrated main and auxiliary ink cartridges, including a main ink cartridge 1, an installation box 2 for installing the main ink cartridge 1, further including an auxiliary ink cartridge 3 and a fixing seat for fixing the auxiliary ink cartridge 3, and the fixing seat is connected to the installation box 2;

[0026] The installation box 2 includes a bottom plate 201, a top plate 202, side plates 203 and a baffle 204. The side plates 203 are symmetrically arranged on both sides of the bottom plate 201. The baffle 204 is connected between the two side plates 203 and is located on the side of the bottom plate 201 away from the auxiliary ink cartridge 3. The top plate 202 is arranged at the top between the two side plates 203. The top plate 202, the side plates 203 and the baffle 204 are detachably arranged. There is an installation opening 4 in the middle of the top plate 202. The bottom of the main ink cartridge 1 is installed in the installation opening 4 and the periphery is locked to the top plate 202 by flat head bolts. There is a stirring mechanism 30 at the bottom of the main ink cartridge 1 to prevent white ink from forming in the main ink cartridge 1. An ink pump 5, an air pump 6, a solenoid valve 7, and a PCBA control panel 8 electrically connected to the ink pump 5, the air pump 6, and the solenoid valve 7 are respectively fixed in the installation box 2. The main ink cartridge 1 is connected to the ink pump 5 through a pipeline and the solenoid valve 7. A connection hole (not marked in the figure) is provided at the upper part of the auxiliary ink cartridge 3. The ink pump 5 is connected to the connection hole of the auxiliary ink cartridge 3 through a pipeline; the PCBA control panel 8 can control the opening and closing of the ink pump 5, the air pump 6 and the solenoid valve 7 through software program programming; there is a solenoid valve 7 between the ink pump 5 and the main ink cartridge 1. The solenoid valve 7 is locked to the ink tank fixing plate 37 by two flat head screws. When the ink pump 5 is not working, the solenoid valve 7 is in a closed state to ensure that the ink in the main ink cartridge 1 will not flow to the auxiliary ink cartridge 3 due to the height difference;.

[0027] The fixing base includes an upper fixing base 11 and a lower fixing base 12. A sub-ink cartridge 3 and a safety bottle 13 are hermetically connected between the upper fixing base 11 and the lower fixing base 12. The upper and lower sides of the sub-ink cartridge 3 and the safety bottle 13 are sealed by an O-ring 10. The sub-ink cartridge 3 and the safety bottle 13 are connected through the upper fixing base 11 (the upper fixing base 11 is processed with a processing hole connecting the sub-ink cartridge 3 and the safety bottle 13). The safety bottle 13 can prevent ink overflow caused by the failure of the liquid level switch of the sub-ink cartridge 3 and continuous ink filling after the sub-ink cartridge 3 is full of ink. The sub-ink cartridge 3 is hollow and forms an ink chamber 14. The safety bottle 13 is hollow and forms a safety chamber 15. The bottom of the upper fixing base 11 extends into the ink chamber 14 and the safety chamber 15 respectively and is provided with a liquid level detection switch 16. The liquid level detection switch 16 can detect the liquid level height of the ink in the main ink cartridge 1 or the safety bottle 13. An alarm indicator light 17 electrically connected to the liquid level detection switch 16 is provided at the top of the upper fixing base 11. The lower fixing base 12 is respectively provided with a print head 18 and an exhaust nozzle 19. The top of the print head 18 is located in the ink chamber 14, and the top of the exhaust nozzle 19 is located in the safety chamber 15; it should be noted that: there is a liquid level alarm device 38 electrically connected to the alarm indicator light 17 in the main ink cartridge 1. When the liquid level of the main ink cartridge 1 is low, the alarm indicator light 17 alarms to prompt ink filling. The bottom of the main ink cartridge 1 is an ink tank bottom plate 201. The liquid level alarm device 38 is fixed on the ink tank bottom plate 201 by the way of locking with upper and lower nuts. The ink tank bottom plate 201 is pressed into the ink tank cavity by a direct pressing method. The ink tank bottom plate 201 and the ink tank are in an interference fit. Compared with the method of screwing and then applying glue, the airtightness is better and the stability is higher; the sub-ink cartridge 3 is provided with a ceramic heating sheet and a temperature detection sensor, which can heat the ink inside the sub-ink cartridge 3 and can realize preheating for inks with high temperature requirements; the safety bottle 13 and the sub-ink cartridge 3 are fixed on a fixing block 31 by internal hexagonal socket head cap screws. The safety bottle 13 is connected to the atmosphere. When the ink in the sub-ink cartridge 3 overflows into the safety bottle 13 and the ink level in the safety bottle 13 rises to trigger the liquid level detection switch 16 in the safety bottle 13 to alarm, the power is cut off forcibly to stop the ink pump 5 from working; the pressurized ink discharge is realized by an air pump 6. The air pump 6 and the safety bottle 13 are connected through a Y-shaped tee (the connection method is: one end of the Y-shaped tee is connected to the air pump 6 through a connecting pipe, and the other end is connected to the air inlet 40 at the top of the upper fixing base 11 through a connecting pipe). One path of the Y-shaped tee is connected to the safety bottle 13, one path is connected to the air pump 6, and one path is connected to a normally open two-way solenoid valve 39. The two-way solenoid valve 39 is also connected to the atmosphere. When in normal use, the atmosphere is connected to the safety bottle 13 through the two-way solenoid valve 39, and the air pressure in the sub-ink cartridge 3 is ensured through the air inlet 40. When pressurized maintenance is required, the two-way solenoid valve 39 is closed, and the air pump 6 pressurizes the safety bottle 13 to realize pipeline exhaust and rapid ink filling.

[0028] Specifically, the upper fixing base 11 is provided with a processing hole that extends into the upper fixing base 11. At the top positions of the ink chamber 14 and the safety chamber 15, the upper fixing base 11 is respectively provided with a secondary ink cartridge communication hole 20 and a safety bottle communication hole 21 that communicate with the processing hole.

[0029] Specifically, the lower fixing base 12 is provided with a second processing hole that extends into the lower fixing base 12. At the bottom positions of the ink chamber 14 and the safety chamber 15, the lower fixing base 12 is respectively provided with a second secondary ink cartridge communication hole and a second safety bottle communication hole that communicate with the processing hole (it should be noted that the processing methods of the second processing hole, the second secondary ink cartridge communication hole, and the second safety bottle communication hole on the lower fixing base 12 are the same as those of the processing hole, the secondary ink cartridge communication hole, and the safety bottle communication hole on the upper fixing base 12. The second secondary ink cartridge communication hole communicates with the inside of the secondary ink cartridge 3, and the second safety bottle communication hole communicates with the inside of the safety bottle 13). The bottom of the safety bottle 13 is provided with a drain ink pressure component 22. The drain ink pressure component 22 is a customized part that can be manufactured with different pulling forces according to pressure requirements. The drain ink pressure component 22 includes a base sleeve 221 and a cover 222. The base sleeve 221 includes a mounting plate 2211 fixed to the bottom of the safety bottle 13 and a sleeve 2212 provided on the mounting plate 2211 and extending into the safety chamber 15. An annular groove 23 is provided at the top of the sleeve 2212 (the mounting plate 2211 is locked and installed at the bottom of the safety bottle 13 by bolts). The bottom of the cover 222 is provided with an annular plate 24 for snapping into the annular groove 23. A pulling force component 25 elastically connected to the bottom of the annular groove 23 is provided at the bottom of the annular plate 24. The cover 222 is provided with a plurality of ink inlet holes 26 along the circumference on the inner side of the annular plate 24. In the initial state, the top of the sleeve 2212 forms a blockage at the ink inlet holes 26 of the cover 222, and a rubber pad can be provided at the blockage of the sleeve 2212 at the ink inlet holes 26 to achieve a sealing effect. In this way, when the liquid level detection switch 16 in the secondary ink cartridge 3 fails and the ink is added to a certain height, the main ink cartridge 1 continues to add ink into the secondary ink cartridge 3, increasing the pressure in the secondary ink cartridge 3 to be greater than the pulling force of the pulling force component 25, which will drive the cover 222 to separate from the top of the sleeve 2212, so that the ink can flow into the safety chamber 15 through the ink inlet holes 26. It is not necessary for the ink in the secondary ink cartridge 3 to flow into the safety bottle 13 through the processing hole in the upper fixing base 11 after being filled, which can reduce the risk of ink overflowing from the upper and lower sealing parts after the secondary ink cartridge 3 is filled with ink. It should be noted that the pressure required to open the drain ink pressure component 22 is greater than the pressure applied by the ink pump 5 to the secondary ink cartridge 3 during printing, so as to prevent the ink from flowing into the safety bottle 13 when the printing head 18 provides normal pressure during printing.

[0030] Specifically, a plurality of tension assemblies 25 are provided along the circumference of the annular plate 24. The tension assembly 25 includes a spring 251 fixedly arranged at the bottom of the annular plate 24 and a positioning plate 252. The positioning plate 252 is fixedly arranged at one end of the spring 251 away from the annular plate 24. A clamping groove 27 for the positioning plate 252 to be clamped is formed by downwardly opening the inner wall of the bottom of the annular groove 23. The bottom of the clamping groove 27 extends towards one side to form a limiting groove 28 for the positioning plate 252 to turn into. It should be noted that: the radian of the positioning plate 252 and the clamping groove 27 is the same as that of the annular groove 23. By driving the positioning plate 252 to rotate, it can be clamped into the limiting groove 28, so that when the annular plate 24 moves and pulls the spring 251, the positioning plate 252 can not move up and down; the model of the spring 251 can be selected according to the required tension and is used in the ink discharging pressure assembly 22.

[0031] Specifically, a plurality of assisting rods 29 are downwardly extended from the bottom of the annular plate 24 and are arranged corresponding to the springs 251. The bottom end of the assisting rod 29 extends to one side of the positioning plate 252 and abuts against the positioning plate 252. The assisting rod 29 is fixed to the annular plate 24 and can extend to the bottom of the annular groove 23 when the cover 222 and the sleeve 2212 are sealed. By rotating the annular plate 24, the assisting rod 29 can be driven to push the positioning plate 252 into the limiting groove 28.

[0032] Specifically, the stirring mechanism 30 includes a stirring motor 301, a rotating block 302 and a magnetic float 303. A fixing block 31 is fixed to the bottom of the main ink cartridge 1 through a copper column. The stirring motor 301 is fixed on the fixing block 31. The output end of the stirring motor 301 penetrates through the fixing block 31 and extends upward to the bottom of the main ink cartridge 1. The top of the output end of the stirring motor 301 is fixed with a rotating block 302. The magnetic float 303 is arranged inside the main ink cartridge 1 and is magnetically connected to the rotating block 302. When the output shaft of the stirring motor 301 rotates, the magnetic float 303 inside the main ink cartridge 1 is driven to rotate by magnetic force, so as to stir the precipitated ink particles such as white ink.

[0033] Specifically, base rods 32 are fixed to the four corners of the bottom plate 201 through bolts. The cross-section of the base rod 32 is L-shaped. Strip-shaped slots 33 are vertically arranged at both outer ends of the base rod 32. The baffle 204 and the side plate 203 both slide into the space between the two base rods 32 through the strip-shaped slots 33 on the base rods 32. The four corners of the top plate 202 are fixedly screwed to the four base rods 32 through bolts. In this way, the installation of the installation box 2 is simple and it is convenient to disassemble.

[0034] Specifically, on one side of the top plate 202 close to the sub-ink cartridge 3, there is a bayonet for the sub-ink cartridge 3 and the safety bottle 13 to be inserted into. And inside the bayonet, there is a blocking block 34 for abutting against the sub-ink cartridge 3 and the safety bottle 13. The fixing block 31 is provided with a stepped groove 35 for clamping with the outer edge of the outer end of the bottom plate 201. The bottom plate 201 passes through and is screwed into the stepped groove 35 to fix the fixing block 31. Inside the slot 27 of the base rod 32 on the side of the bottom plate 201 close to the sub-ink cartridge 3, a docking plate 36 is arranged. The docking plate 36 is used for abutting against the side end faces of the sub-ink cartridge 3 and the safety bottle 13. The bottom end of one end of the fixing block 31 close to the main ink cartridge 1 extends downward and abuts against the top end face of the top plate 202. In this way, the installation box 2 and the fixing block 31, and the sub-ink cartridge 3 and the safety bottle 13 can be more tightly connected. It should be noted that: the upper fixing seat 11 is externally coated with a sheet metal part 41. The sheet metal part 41 can enable the alarm indicator light 17 and the upper fixing seat 11 to play a good connection role, and can also protect and decorate the upper fixing seat 11.

[0035] A specific application embodiment of this embodiment is:

[0036] When the device is in use, the main ink cartridge 1 is locked to the top plate 202 by flat head screws. The ink is pumped into the sub-ink cartridge 3 through the ink pump 5. The ink pump 5 is fixed to the bottom plate 201 by screws. There is an electromagnetic valve 7 between the ink pump 5 and the main ink cartridge 1. The electromagnetic valve 7 is locked to the top plate 202 by two flat head screws. When the ink pump 5 is not working, it is in a closed state to ensure that the ink in the main ink cartridge 1 will not flow to the sub-ink cartridge 3 due to the height difference.

[0037] There is a liquid level alarm device 38 in the main ink cartridge 1. When the liquid level in the main ink cartridge 1 is low, the alarm indicator light 17 gives an alarm to prompt ink addition. The liquid level alarm device 38 is fixed to the ink tank bottom plate 201 by the way of locking with upper and lower nuts. The ink tank bottom plate 201 is pressed into the ink tank cavity by direct pressing. The ink tank bottom plate 201 and the ink tank are in an interference fit. Compared with the way of locking with screws and then applying glue, the airtightness is better and the stability is higher.

[0038] There is a stirring motor 301 below the main ink cartridge 1. The stirring motor 301 is fixed on the fixing block 31 of the stirring motor 301 and is fixed to the ink tank bottom plate 201 by copper columns. The stirring motor 301 drives the rotating block 302 equipped with a magnet to rotate. When the rotating block 302 rotates, it drives the magnetic float 303 in the main ink cartridge 1 to rotate through magnetic force, achieving the effect of stirring the ink with precipitated particles.

[0039] There is a liquid level detection switch 16 in the sub-ink cartridge 3. When the liquid level is low, the solenoid valve 7 opens, and the ink pump 5 pumps ink into the sub-ink cartridge 3. To prevent ink overflow in the sub-ink cartridge 3 due to the failure of the liquid level switch in the sub-ink cartridge 3, a safety bottle 13 is added beside the sub-ink cartridge 3. A drain pressure component 22 is provided at the bottom of the safety chamber 15 of the safety bottle 13. When the liquid level detection switch 16 in the sub-ink cartridge 3 fails, after the ink in the sub-ink cartridge 3 is injected to a certain height by the ink pump 5 and continues to be injected, the excessive pressure in the sub-ink cartridge 3 will drive the annular plate 24 to pull the spring 251 and move the cover 222 upward, so that the ink inlet hole 26 is disengaged from the blockage of the sleeve 2212, (at this time, the annular plate 24 will not disengage from the annular groove 23), so that the ink is injected into the safety chamber 15 in the safety bottle 13. The liquid level detection switch 16 in the safety chamber 15 will detect the ink in the safety chamber 15. When the liquid level in the safety chamber 15 reaches the liquid level value set by the liquid level detection switch 16, an alarm will occur, thereby closing the ink pump 5 and stopping the ink pump 5 from injecting ink into the sub-ink cartridge 3.

[0040] The safety bottle 13 is communicated with the sub-ink cartridge 3, and the two are fixed on the lower fixing seat 12 at the bottom of the ink cartridge by internal hexagonal socket head cap screws.

[0041] Pressurized ink drainage is realized by the air pump 6 inside the ink supply system. The air pump 6 is connected to the safety bottle 13 through a Y-shaped tee. For the Y-shaped tee, one path is connected to the air inlet 40 at the top of the safety bottle 13 through a connecting pipe, and the other path is connected to a normally open two-way solenoid valve 39, and the other end of the two-way solenoid valve 39 communicates with the atmosphere. When in normal use, the atmosphere is connected to the safety bottle 13 through the two-way solenoid valve 39 to ensure the atmospheric pressure in the sub-ink cartridge 3 (this pressure is less than the pulling force that causes the cover 222 to disengage from the top of the sleeve 2212). When pressurized maintenance is required, the two-way solenoid valve 39 is closed, and the air pump 6 pressurizes the safety bottle 13 (the pressure can enter the sub-ink cartridge 3 through the safety bottle communication hole 21, the processing hole and the sub-ink cartridge communication hole 20. The pressurized pressure and the total mass of the ink in the sub-ink cartridge 3 reaching the set height are less than the pulling force that causes the cover 222 to disengage from the top of the sleeve 2212. In this way, the ink can be discharged smoothly from the exhaust nozzle 19 and the cover 222 can be prevented from opening), realizing pipeline exhaust and rapid ink discharge.

[0042] When the print head 18 is pressurized, it cannot exceed the pressure designed for the print head, such as Kpa. Therefore, a pressure limiting valve is connected between the air pump 6 and the safety bottle 13. The pressure limiting valve is a one-way valve with a spring 251. The opening elastic force of the spring 251 is the maximum pressure required by the print head. When the pressure of the air pump 6 exceeds the maximum pressure, the one-way valve opens to relieve pressure to ensure that the pressurized pressure is within the range required by the print head. The internal pumps, valves and liquid level switch devices of the siphon ink supply system are controlled by the PCBA control panel 8 and the control software.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly defined and limited, the terms "mount", "set", "connect", "fix", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated siphon ink supply device with an integrated main and sub-ink cartridges, characterized in that: It includes a main ink cartridge (1), an installation box (2) for installing the main ink cartridge (1), a secondary ink cartridge (3), and a fixing base for fixing the secondary ink cartridge (3). The fixing base is connected to the installation box (2). The installation box (2) includes a bottom plate (201), a top plate (202), side plates (203), and a baffle (204). The side plates (203) are symmetrically arranged on both sides of the bottom plate (201). The baffle (204) is connected between the two side plates (203) and is located on the side of the bottom plate (201) away from the secondary ink cartridge (3). The top plate (202) is arranged at the top between the two side plates (203). The top plate (202), the side plates (203), and the baffle (204) are detachably arranged. An installation opening (4) is provided in the middle of the top plate (202). The bottom of the main ink cartridge (1) is installed in the installation opening (4) and is locked to the top plate (202) by flat head bolts on the peripheral side. A stirring mechanism (30) for preventing white ink from forming in the main ink cartridge (1) is provided at the bottom of the main ink cartridge (1). An ink pump (5), an air pump (6), a solenoid valve (7), and a PCBA control panel (8) electrically connected to the ink pump (5), the air pump (6), and the solenoid valve (7) are respectively fixed in the installation box (2). A pipeline is connected between the main ink cartridge (1) and the ink pump (5) and the solenoid valve (7). A connection hole is provided in the upper part of the secondary ink cartridge (3). The ink pump (5) is connected to the connection hole of the secondary ink cartridge (3) through a pipeline. The fixing base includes an upper fixing base (11) and a lower fixing base (12). A secondary ink cartridge (3) and a safety bottle (13) are hermetically connected between the upper fixing base (11) and the lower fixing base (12). The secondary ink cartridge (3) and the safety bottle (13) are communicated through the upper fixing base (11). The secondary ink cartridge (3) is hollow and forms an ink chamber (14). The safety bottle (13) is hollow and forms a safety chamber (15). A liquid level detection switch (16) is respectively extended into the ink chamber (14) and the safety chamber (15) from the bottom of the upper fixing base (11). An alarm indicator light (17) electrically connected to the liquid level detection switch (16) is provided at the top of the upper fixing base (11). A printing nozzle (18) and an exhaust nozzle (19) are respectively provided on the lower fixing base (12). The top end of the printing nozzle (18) is located in the ink chamber (14), and the top end of the exhaust nozzle (19) is located in the safety chamber (15). The bottom of the safety bottle (13) is provided with an ink discharging pressure assembly (22). The ink discharging pressure assembly (22) includes a base sleeve (221) and a cover (222). The base sleeve (221) includes a mounting plate (2211) fixed to the bottom of the safety bottle (13) and a sleeve (2212) provided on the mounting plate (2211) and extending into the safety chamber (15). An annular groove (23) is provided at the top of the sleeve (2212). The bottom of the cover (222) is provided with an annular plate (24) for snapping into the annular groove (23). A tension assembly (25) elastically connecting the bottom of the annular plate (24) to the bottom of the annular groove (23) is provided at the bottom of the annular plate (24). A plurality of ink inlet holes (26) are provided along the circumference on the inner side of the cover (222) where the annular plate (24) is located; A plurality of groups of tension assemblies (25) are provided along the circumference of the annular plate (24). The tension assembly (25) includes a spring (251) fixedly provided at the bottom of the annular plate (24) and a positioning plate (252). The positioning plate (252) is fixedly provided at the end of the spring (251) away from the annular plate (24). A clamping groove (27) for the positioning plate (252) to snap into is opened downward on the inner wall of the bottom of the annular groove (23). A limiting groove (28) for the positioning plate (252) to turn into extends from the bottom of the clamping groove (27) to one side; A plurality of assisting rods (29) extending downward are provided at the bottom of the annular plate (24) and are provided corresponding to the springs (251). The bottom end of the assisting rod (29) extends to one side of the positioning plate (252) and abuts against the positioning plate (252); The stirring mechanism (30) includes a stirring motor (301), a rotating block (302) and a magnetic float (303). A fixing block (31) is fixed to the bottom of the main ink cartridge (1) through a copper column. The stirring motor (301) is fixed on the fixing block (31). The output end of the stirring motor (301) penetrates through the fixing block (31) and extends upward to the bottom of the main ink cartridge (1). A rotating block (302) is fixed to the top of the output end of the stirring motor (301). The magnetic float (303) is arranged inside the main ink cartridge (1) and is magnetically connected to the rotating block (302).

2. The integrated siphon ink supply device with an integrated main and sub-ink cartridges according to claim 1, characterized in that: The upper fixing seat (11) is provided with a processing hole which extends into the upper fixing seat (11). The upper fixing seat (11) is respectively provided with a secondary ink cartridge communication hole (20) and a safety bottle communication hole (21) communicated with the processing hole at the positions of the ink chamber (14) and the top of the safety chamber (15).

3. The integrated siphon ink supply device with an integrated main and auxiliary ink cartridges according to claim 1, wherein: The lower fixing seat (12) is provided with a second processing hole which extends into the lower fixing seat (12). The lower fixing seat (12) is respectively provided with a second secondary ink cartridge communication hole and a second safety bottle communication hole communicated with the second processing hole at the positions of the ink chamber (14) and the bottom of the safety chamber (15).

4. An integrated siphon ink supply device with an integrated main and auxiliary ink cartridges (3) according to claim 1, characterized in that: At the four corners of the bottom plate (201), base rods (32) are fixed by bolts. The cross-section of the base rod (32) is L-shaped. Strip-shaped slots (33) are vertically arranged at both outer ends of the base rod (32). The baffle plate (204) and the side plate (203) slide into the space between the two base rods (32) through the strip-shaped slots (33) on the base rods (32). At the four corners of the top plate (202), bolts are screwed and fixed to the four base rods (32).

5. The integrated siphon ink supply device with an integrated main and auxiliary ink cartridges according to claim 1, characterized in that: On one side of the top plate (202) close to the sub-ink cartridge (3), there is a bayonet for the sub-ink cartridge (3) and the safety bottle (13) to be inserted. Inside the bayonet, there is a blocking block (34) for abutting against the sub-ink cartridge (3) and the safety bottle (13). The fixing block (31) is provided with a stepped groove (35) for clamping with the outer end of the bottom plate (201). The bottom plate (201) is fixed to the fixing block (31) by passing a bolt through and screwing it into the stepped groove (35). A docking plate (36) is arranged in the slot (27) of the base rod (32) on one side of the bottom plate (201) close to the sub-ink cartridge (3). The docking plate (36) is used to abut against the side end faces of the sub-ink cartridge (3) and the safety bottle (13).

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