Ink stack structure of digital printer
By designing an automated ink stack structure and utilizing transfer components and negative pressure suction technology, the problem of difficult maintenance of traditional inkjet printers has been solved, achieving efficient cleaning of the printhead and extended lifespan.
Patent Information
- Application Number
- CN202520152954.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The ink stack structure of traditional inkjet printers cannot meet the maintenance needs of diverse printhead layouts. Cleaning methods rely on manual operation or simple wiping devices, resulting in frequent printhead damage and clogging problems. There is a lack of automated, refined, and efficient maintenance solutions.
An ink stack structure was designed, comprising an ink stack bottom box, an ink stack top box, a negative pressure ink cartridge, and a scraper cartridge. The automatic scraping operation is achieved through the first and second transmission components, and combined with gravity flow and negative pressure suction, the ink on the surface and inside of the printhead is cleaned efficiently.
It achieves efficient printhead cleaning, extends printhead lifespan, reduces maintenance time, improves printer efficiency, and avoids ink clogging problems.
Smart Images
Figure CN223574047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printer technology, and in particular to the ink stack structure of a digital printer. Background Technology
[0002] With the widespread application of inkjet printing technology in many fields such as office, advertising, and industrial printing, the requirements for printing quality and equipment stability are increasing day by day. However, inkjet printer printheads have always been plagued by problems such as ink drying, clogging, and the intrusion of external dust and impurities.
[0003] Traditional ink stack structures are extremely limited in function, only suitable for 8*1 or 4*1 printhead specifications for maintenance, which cannot meet the maintenance needs of today's diverse printhead layouts. Cleaning methods mostly rely on manual operation or simple wiping devices. Manual cleaning not only consumes a lot of manpower and time, but also can easily scratch the delicate parts of the printhead, causing printhead damage. Simple wiping devices often do not clean thoroughly, and residual impurities can easily cause clogging problems again in subsequent printing. Overall, there is a lack of an automated, refined, and efficient maintenance solution, which has become a key bottleneck restricting the improvement of inkjet printing quality and shortening the service life of equipment, and innovative technological breakthroughs are urgently needed.
[0004] Therefore, this utility model provides an ink stack structure for a digital printer to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide an ink stack structure for a digital printer to solve the problem of difficult printhead maintenance in traditional inkjet printers mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:
[0007] The ink stack structure of a digital printer includes an ink stack base box, an ink stack top box, a negative pressure ink cartridge, and a scraper cartridge. The ink stack base box is located below the end of the printhead movement trajectory of the inkjet printer. A first transmission component is installed on the ink stack base box to drive the ink stack top box to move up and down. A second transmission component is installed on the ink stack top box to drive the scraper cartridge to move in a linear reciprocating motion, and the scraper cartridge is installed on the second transmission component.
[0008] The negative pressure ink cartridge is located in the middle of the top box of the ink stack. An ink pad base plate is fixed on the upper side of the negative pressure ink cartridge. The ink pad body and the first ink collection hole are arranged in an array on the upper side of the ink pad base plate so that the ink pad body and the first ink collection hole can guide the ink dripping from the print head into the negative pressure ink cartridge.
[0009] As a further scheme of the present utility model, the second ink collecting hole is set on the ink pad base plate below the ink pad body and opposite to the outlet of the ink pad body, and the two sides of the second ink collecting hole and the ink pad base plate are both provided with a hole positioning block matched with the bottom structure of the ink pad body.
[0010] As a further scheme of the present utility model, the ink stack top box is composed of two functional side plates, an ink stack front box and an ink stack rear box fixed between the two functional side plates by screws, wherein the negative pressure ink receiving box is fixed between the ink stack front box and the ink stack rear box, the two functional side plates are both fixedly connected with guide rails on the side away from each other, and the front end surface of the functional side plate is provided with an axle slot.
[0011] As a further scheme of the present utility model, the first transmission assembly includes four gear rack elevators fixed on the inner bottom wall of the ink stack bottom box by screws and a double-head speed reducer fixed on the side wall of the ink stack bottom box, a first motor is fixed on one side end surface of the double-head speed reducer by screws, the output end of the first motor is fixedly connected with the input end of the double-head speed reducer, the two output ends of the double-head speed reducer are respectively fixedly connected with the input ends of the adjacent gear rack elevators, transmission shafts are transmissionally connected between the adjacent gear rack elevators, and the output ends of the gear rack elevators are all fixedly connected with connecting discs, wherein two of the connecting discs are fixed with the ink stack front box by screws, and the other two connecting discs are fixed with the ink stack rear box by screws.
[0012] As a further scheme of the present utility model, the second transmission assembly includes a first rotating shaft rotationally embedded between the two functional side plates and a second rotating shaft located between the two axle slots, a belt pulley is rotationally sleeved on the outer side of both ends of the first rotating shaft and the second rotating shaft, a first transmission belt is transmissionally connected between the two adjacent belt pulleys, a motor support is fixed on the inner wall of the ink stack rear box, a second motor is fixed on the motor support by screws, a small belt pulley is fixedly connected with the output end of the second motor, a large belt pulley is fixedly connected with the middle outer side of the first rotating shaft, and a second transmission belt is transmissionally connected between the large belt pulley and the small belt pulley.
[0013] As a further scheme of the present utility model, the upper and lower sides of the first transmission belt are respectively provided with an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate are fixed as an integral structure by screws, the partial region of the first transmission belt is clamped and fixed between the upper pressing plate and the lower pressing plate, the bottom end of the lower pressing plate extends to one side of the functional side plate and is fixedly connected with a sliding block, and the sliding block is slidingly connected with the adjacent guide rail.
[0014] As a further scheme of the utility model, the top of the two lower pressing plates is fixed with an ink scraping box with an open top, one end of the ink scraping box is fixedly embedded with a second ink guide pipe below the ink stack bottom box, the top end surface of the second ink guide pipe is flush with the bottom wall of the ink stack bottom box, the part of the ink scraping box above the ink stack bottom box is fixed with an ink scraping clamp on the bottom wall, the scraping knife is clamped between the two side walls of the ink scraping clamp, and the top edge of the scraping knife is provided with a blade for scraping the excess ink on the print head.
[0015] As a further scheme of the utility model, the bottom space of the negative pressure ink receiving box is gradually narrowed from both sides to the middle, and the bottom end of the negative pressure ink receiving box is fixedly embedded with a first ink guide pipe, and the top end surface of the first ink guide pipe is flush with the bottom wall of the negative pressure ink receiving box.
[0016] Compared with the prior art, the utility model has the beneficial effects that: the ink stack structure of the utility model digital printer, when the ink jet printer nozzle enters the maintenance period or idle state, the first transmission assembly first lifts the ink stack top box to the first working height, so that the second transmission assembly can drive the scraping knife to scrape the ink, and the scraped ink will be collected by the ink scraping box, after the first transmission assembly lifts the ink stack top box to the second working height, the print head and the ink pad body are completely inserted and matched, so that the negative pressure ink receiving box can collect the remaining ink, by using the double principles of gravity drainage and negative pressure suction, the waste liquid generated in the cleaning process can be efficiently collected, not only the ink on the surface of the nozzle is cleaned, but also the residual ink in the print head is absorbed, avoiding the problems of nozzle blockage caused by long-term accumulation of ink in the nozzle, prolonging the service life of the nozzle, and compared with the traditional manual operation or simple wiping device, the automatic ink scraping process is more efficient, the surface ink of the nozzle can be cleaned in a short time, the time required for printer maintenance is reduced, and the overall working efficiency of the printer is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model is further illustrated below in combination with the drawings and examples:
[0018] Figure 1 It is schematic view of installation position of ink stack structure of utility model digital printer;
[0019] Figure 2 It is perspective view of ink stack structure of utility model digital printer;
[0020] Figure 3 It is bottom view structure diagram of ink stack top box in ink stack structure of utility model digital printer;
[0021] Figure 4 It is internal structure diagram of ink stack top box in ink stack structure of utility model digital printer;
[0022] Figure 5 The utility model discloses a digital printer's ink stack structure Figure 2 The structure enlarged view of A in the figure
[0023] Figure 6 The utility model discloses a digital printer's ink stack structure first transmission subassembly's structure diagram.
[0024] In the drawing, the component list that each sign represents is as follows:
[0025] 1, ink stack bottom box;2, ink stack top box;3, negative pressure ink receiving box;4, ink scraping box;5, first transmission subassembly;6, second transmission subassembly;21, function side plate;22, ink stack front box;23, ink stack rear box;211, guide rail;212, shaft slot;31, ink pad bottom plate;32, ink pad body;33, first ink collecting hole;34, hole positioning block;35, second ink collecting hole;36, first ink guide pipe;41, second ink guide pipe;42, ink scraping clamp;43, scraper;51, gear rack elevator;52, double head speed reducer;53, first motor;54, transmission shaft;55, connecting disc;61, first rotating shaft;62, second rotating shaft;63, belt pulley;64, first transmission belt;65, motor support;66, second motor;67, small pulley;68, large pulley;69, second transmission belt;641, upper pressing plate;642, lower pressing plate;643, sliding block. DETAILED DESCRIPTION
[0026] The utility model will be further described in connection with the embodiment.
[0027] Please refer to Figures 1-6 The utility model provides a digital printer's ink stack structure, including ink stack bottom box 1, ink stack top box 2, negative pressure ink receiving box 3 and ink scraping box 4, ink stack bottom box 1 is below the end of ink jet printer print head moving track, negative pressure ink receiving box 3 is set in the middle position of ink stack top box 2, the upper side of negative pressure ink receiving box 3 is fixed with ink pad bottom plate 31, the upper side of ink pad bottom plate 31 is arrayed with ink pad body 32 and first ink collecting hole 33;
[0028] Specifically, ink pad body 32 is arranged as multiple longitudinal groups, multiple first ink collecting holes 33 are arranged equidistantly between adjacent longitudinal groups, and first ink collecting hole 33 is directly connected with ink stack top box 2, and the ink liquid inadvertently dropped on ink pad bottom plate 31 can enter negative pressure ink receiving box 3 from first ink collecting hole 33, facilitating worker cleaning.
[0029] Further, a second ink collecting hole 35 is arranged below the ink pad body 32 and on the ink pad base plate 31, opposite to the outlet of the ink pad body 32, and a hole positioning block 34 is arranged on both sides of the second ink collecting hole 35 and on the ink pad base plate 31, which is matched with the bottom structure of the ink pad body 32, and the ink pad body 32 is fixed by screws between the hole positioning blocks 34;
[0030] Specifically, the ink pad body 32 generally refers to a sponge-like substance used in a printer to absorb waste ink generated during the printing process, and its main function is to collect waste ink sprayed by the print head during the printing process. For the prior art, this application will not be described in detail. The screw fixing method can facilitate the replacement of the ink pad body 32.
[0031] Specifically, the hole positioning block 34 not only provides positioning function, but also is fixed by screws with the bottom structure of the ink pad body 32 through the holes on it, ensuring that the ink pad body 32 is installed firmly and will not be offset.
[0032] Further, the ink stack top box 2 is composed of two functional side plates 21, an ink stack front box 22 and an ink stack rear box 23 fixed between the two functional side plates 21 by screws, wherein the negative pressure ink receiving box 3 is fixed between the ink stack front box 22 and the ink stack rear box 23, and the two functional side plates 21 are fixedly connected with guide rails 211 on the side away from each other, and the front end faces of the functional side plates 21 are provided with shaft grooves 212.
[0033] Specifically, the ink stack front box 22 and the ink stack rear box 23 are both semi-closed structures with closed top and open bottom, and the top walls of the ink stack front box 22 and the ink stack rear box 23 are provided with avoiding grooves corresponding to the belt pulley 63 and the large pulley 68, so that the upper parts of the belt pulley 63 and the large pulley 68 can protrude from the top walls of the ink stack front box 22 and the ink stack rear box 23. After the first transmission belt 64 is installed, the two long sides of the first transmission belt 64 can be located on the upper and lower sides of the top walls of the ink stack front box 22 and the ink stack rear box 23, respectively, so that the ink stack top box 2 can avoid the circulation path of the first transmission belt 64, and ensure the normal operation of the equipment.
[0034] Further, the ink stack bottom box 1 is provided with a first transmission assembly 5 for driving the ink stack top box 2 to move up and down, the first transmission assembly 5 comprises four gear rack elevators 51 fixed on the bottom wall of the ink stack bottom box 1 by screws and a double-head speed reducer 52 fixedly connected to the side wall of the ink stack bottom box 1, one side end surface of the double-head speed reducer 52 is fixed with a first motor 53 by screws, the output end of the first motor 53 is fixedly connected with the input end of the double-head speed reducer 52, the two output ends of the double-head speed reducer 52 are respectively fixedly connected with the input ends of the adjacent gear rack elevators 51, and the adjacent gear rack elevators 51 are transmissionally connected with a transmission shaft 54, the output end of each gear rack elevator 51 is fixedly connected with a connecting disc 55, two of the connecting discs 55 are fixed with the ink stack front box 22 by screws, and the other two connecting discs 55 are fixed with the ink stack rear box 23 by screws;
[0035] Specifically, the first motor 53 drives the double-head speed reducer 52 to operate, the output ends of the double-head speed reducer 52 drive the gear rack elevators 51 on both sides to operate, at the same time, the gear rack elevators 51 are transmissionally connected through the transmission shaft 54, so that the output ends of the four gear rack elevators 51 can synchronously rise to push the ink stack top box 2 to the first working height or the second working height, or the output shaft of the first motor 53 reversely rotates the ink stack top box 2 to reset. It is worth noting that, through multiple finite element analysis and actual test verification, the application of multiple gear rack elevators 51 can effectively share the stress on the ink stack top box 2. Under various harsh working conditions such as long-time continuous operation, the stability of the lifting structure is fully guaranteed. Compared with the design of using a single elevator, under the same load condition, the stress is concentrated at the key position when using a single elevator, while the stress concentration value is divided in this design, which greatly improves the reliability and service life of the structure, effectively reduces the equipment maintenance cost and failure risk.
[0036] Further, the ink stack top box 2 is provided with a second transmission assembly 6 for driving the ink scraping box 4 to move linearly, the second transmission assembly 6 comprises a first rotating shaft 61 rotationally embedded between the two functional side plates 21 and a second rotating shaft 62 located between the two shaft grooves 212, the outer sides of both ends of the first rotating shaft 61 and the second rotating shaft 62 are rotationally sleeved with a belt pulley 63, the first transmission belt 64 is transmissionally connected between the front and rear two adjacent belt pulleys 63, the inner wall of the ink stack rear box 23 is fixedly provided with a motor bracket 65, the second motor 66 is fixed on the motor bracket 65 by screws, the output end of the second motor 66 is fixedly connected with a small belt pulley 67, the middle outer side of the first rotating shaft 61 is fixedly connected with a large belt pulley 68, and the second transmission belt 69 is transmissionally connected between the large belt pulley 68 and the small belt pulley 67;
[0037] Specifically, the second motor 66 is started to drive the small pulley 67 to rotate, the small pulley 67 drives the large pulley 68 to rotate through the second transmission belt 69, the speed reduction transmission can be realized, the large pulley 68 drives the first rotating shaft 61 to rotate, the first rotating shaft 61 drives the two pulleys 63, and the first transmission belt 64 transmits between adjacent pulleys 63, the first transmission belt 64 can drive the upper pressing plate 641 and the lower pressing plate 642 clamped on the upper and lower sides thereof to move synchronously, thereby driving the scraper 43 to realize the ink scraping step, and vice versa. The scraper 43 can be reset by reversing the second motor 66.
[0038] Specifically, the width of the shaft groove 212 is the same as the diameter size of the second rotating shaft 62, so that the second rotating shaft 62 does not shake up and down, and at the same time, the part of the second rotating shaft 62 located inside the functional side plate 21 is provided with a setback portion, the diameter of the setback portion is greater than the width of the shaft groove 212, and the two setback portions are respectively in contact with the two functional side plates 21, so that the second rotating shaft 62 does not shake left and right. When installing, the second rotating shaft 62 can be easily inserted or taken out without simultaneously aligning all the shaft holes of the first rotating shaft 61 and the second rotating shaft 62.
[0039] Further, the upper and lower sides of the region of the first transmission belt 64 are respectively provided with the upper pressing plate 641 and the lower pressing plate 642, the upper pressing plate 641 and the lower pressing plate 642 are fixed as an integral structure by screws, and the region of the first transmission belt 64 is clamped and fixed between the two, the bottom end of the lower pressing plate 642 extends to one side of the functional side plate 21 and is fixedly connected with the sliding block 643, and the sliding block 643 is in sliding connection with the adjacent guide rail 211.
[0040] Specifically, at least one hole is formed on both sides of the first transmission belt 64 and on the upper pressing plate 641 and the lower pressing plate 642, the aligned holes are connected by bolts and nuts, and after tightening, the upper pressing plate 641 and the lower pressing plate 642 can apply sufficient pressure to the first transmission belt 64, so that the upper pressing plate 641 and the lower pressing plate 642 can displace synchronously with the first transmission belt 64.
[0041] Specifically, the sliding block 643 plays a stabilizing and guiding role, so that the lower pressing plate 642 can stably drive the ink scraping box 4, avoiding shaking of the scraper 43 due to deformation of the first transmission belt 64.
[0042] Further, the second transmission component 6 is provided with a scraping ink box 4, the top of the scraping ink box 4 is provided with an opening, the top end of the two lower pressing plates 642 is fixedly provided with the scraping ink box 4, the lower side of one end of the scraping ink box 4 is fixedly provided with a second ink guide pipe 41, the top end surface of the second ink guide pipe 41 is flush with the bottom wall of the ink stack bottom box 1, the part of the scraping ink box 4 above the ink stack bottom box 1 is fixedly provided with a scraping ink clamp 42 on the bottom wall, the scraping ink clamp 42 is provided with a scraping knife 43 between the two side walls, and the top edge of the scraping knife 43 is provided with a blade for scraping the excess ink on the print head.
[0043] Specifically, the scraping ink box 4 is provided in a staggered manner with the ink stack bottom box 1, which helps to avoid the influence of the outer hose of the second ink guide pipe 41 on the movement path of the scraping ink box 4, so that each part of the hose is more inclined to be vertically downward, the ink guide efficiency of the scraping ink box 4 can be maximized by relying on gravity, and the accumulation of ink in the scraping ink box 4 is avoided.
[0044] Specifically, the scraping ink clamp 42 is composed of a right-angle bending plate fixedly provided on the bottom wall of the scraping ink box 4 and a side clamp plate fixedly welded on the vertical side wall of the right-angle bending plate, wherein the bottom of the side clamp plate is connected with the right-angle bending plate, and a gap for accommodating the bottom structure of the scraping knife 43 is formed between the upper part of the side clamp plate and the right-angle bending plate, and the gap is slightly smaller than the thickness of the scraping knife 43, so as to facilitate the preliminary positioning of the scraping knife 43. It is worth noting that the right-angle bending plate, the scraping knife 43 and the side clamp plate are provided with insertion holes aligned with each other, the insertion holes located on the same straight line are inserted with bolts, and the bolts are threadedly connected with nuts at the penetrating ends of the bolts. After the nuts are tightened, the clamping degree of the scraping knife 43 can be guaranteed, and the condition that the scraping knife 43 is easily shaken can be prevented. After the bolt and nut structure is removed, a new scraping knife 43 can be replaced.
[0045] Specifically, the top edge of the scraping knife 43 is provided with a bending plate inclined to one side, the two sides of the bending plate gradually narrow outward from the scraping knife 43 to merge into a straight line, the scraping knife 43 performs ink scraping operation, the position of the straight line is in contact with the print head nozzle, and the ink on the print head nozzle can be effectively removed.
[0046] Further, the ink pad body 32 and the first ink collecting hole 33 can guide the ink dripping on the print head into the negative pressure ink collecting box 3, the bottom space of the negative pressure ink collecting box 3 is gradually narrowed from both sides to the middle, and the bottommost end of the negative pressure ink collecting box 3 is fixedly provided with a first ink guide pipe 36, and the top end surface of the first ink guide pipe 36 is flush with the bottom wall of the negative pressure ink collecting box 3.
[0047] Specifically, the structure gradually narrowing from both sides to the middle helps to concentrate and guide the ink flow to the bottommost part of the negative pressure ink collecting box 3, and the top end surface of the first ink guide pipe 36 flush with the bottom wall of the negative pressure ink collecting box 3 can ensure that the ink flows smoothly into the first ink guide pipe 36, and the accumulation of ink at the bottom of the negative pressure ink collecting box 3 is avoided.
[0048] Optionally, the negative pressure condition of the negative pressure ink receiving box 3 can be achieved by at least two ways, one is to directly connect a negative pressure device such as a negative pressure pump or a hose connected with the input end of the negative pressure pump on the upper side wall of the negative pressure ink receiving box 3, and the negative pressure is formed by continuously sucking the air in the negative pressure ink receiving box 3 by the negative pressure device, and the ink liquid is gathered at the bottom of the negative pressure ink receiving box 3 under the action of gravity, and the other is to connect the hose outside the first ink guide pipe 36 with the top of the ink tank in a negative pressure state, and the negative pressure device such as the negative pressure pump or the hose connected with the input end of the negative pressure pump is also installed on the top of the ink tank, and the negative pressure is formed by continuously sucking the air in the ink tank and the negative pressure ink receiving box 3 by the negative pressure device, and the ink liquid is gathered at the bottom of the ink tank under the action of gravity, which can significantly increase the ink guiding efficiency of the negative pressure ink receiving box 3 and avoid ink accumulation in the negative pressure ink receiving box 3.
[0049] Working principle, the operation steps of the ink stack structure for maintaining the inkjet printer nozzle are as follows:
[0050] When the inkjet printer print head enters the maintenance period or idle state, the first motor 53 drives the double-head speed reducer 52 to operate, the output end of the double-head speed reducer 52 drives the gear and rack lifters 51 on both sides to operate, at the same time, the gear and rack lifters 51 are driven by the transmission shaft 54, so that the output ends of the four gear and rack lifters 51 can be synchronized to rise, which can push the ink stack top box 2 to reach the first working height;
[0051] In the state of the first working height, the height of the blade of the scraper 43 is in the same plane as the nozzle of the print head, the second motor 66 is started, the second motor 66 drives the small pulley 67 to rotate, the small pulley 67 drives the large pulley 68 to rotate through the second transmission belt 69, the large pulley 68 drives the first rotating shaft 61 to rotate, the first rotating shaft 61 drives two belt pulleys 63, and the adjacent belt pulleys 63 are driven by the first transmission belt 64, the first transmission belt 64 can drive the upper and lower pressing plates 641 and 642 clamped on both sides to move synchronously, wherein the sliding block 643 plays a stable guiding role, so that the lower pressing plate 642 can stably drive the ink scraping box 4, the blade of the scraper 43 can move along the plane where the print head nozzle is located, and the ink adhered to the print head nozzle will be scraped to the side wall of the blade, and the ink will be gathered in the ink scraping box 4 under the action of gravity, until the ink is discharged from the hose connected with the second ink guide pipe 41;
[0052] After scraping, the output end of the second motor 66 reverses to reset the ink scraping box 4, and the above scraping operation is performed again, the remaining ink on the print head nozzle will be cleaned again, and similarly, the above actions can be repeated to realize a multi-round cleaning process of the print head nozzle, so as to ensure that the ink is removed to the maximum extent.
[0053] After the last reset of the ink scraping box 4, the first motor 53 continues to operate, so that the ink stack top box 2 reaches the second working height, the printhead is fully inserted with the ink pad body 32, a sealed channel is formed between the printhead and the negative pressure ink receiving box 3, and under the action of gravity, the remaining ink on the printhead will drip along the ink pad body 32 outlet from the second ink collecting hole 35 to the negative pressure ink receiving box 3. It should be noted that the first ink guide pipe 36 is also connected with a hose, so that the first ink guide pipe 36 can discharge the ink collected in the negative pressure ink receiving box 3. If necessary, a negative pressure device is connected to the negative pressure ink receiving box 3 or the first ink guide pipe 36, so that a negative pressure condition can be formed in the negative pressure ink receiving box 3, which can enhance the ability to absorb the excess ink on the printhead nozzle.
Claims
1. An ink stack structure for a digital printer, comprising an ink stack base box (1), an ink stack top box (2), a negative pressure ink cartridge (3), and a scraper cartridge (4), wherein the ink stack base box (1) is located below the end of the printhead movement trajectory of the inkjet printer, characterized in that, The bottom box (1) of the ink stack is equipped with a first transmission component (5) for driving the top box (2) of the ink stack to move up and down. The top box (2) of the ink stack is equipped with a second transmission component (6) for driving the scraper box (4) to move in a straight line reciprocating motion. The scraper box (4) is installed on the second transmission component (6). The negative pressure ink cartridge (3) is located in the middle of the ink stack top box (2). An ink pad base plate (31) is fixed on the upper side of the negative pressure ink cartridge (3). An ink pad body (32) and a first ink collection hole (33) are arranged in an array on the upper side of the ink pad base plate (31) so that the ink pad body (32) and the first ink collection hole (33) can guide the ink dripping from the print head into the negative pressure ink cartridge (3).
2. The ink stack structure of the digital printer according to claim 1, characterized in that: The ink pad body (32) is provided with a second ink collection hole (35) on the bottom plate (31) of the ink pad body (32) and is directly opposite to the outlet of the ink pad body (32). On both sides of the second ink collection hole (35) and on the bottom plate (31) of the ink pad body, there are perforated positioning blocks (34) that are adapted to the bottom structure of the ink pad body (32). The ink pad body (32) is fixed between the perforated positioning blocks (34) with screws.
3. The ink stack structure of the digital printer according to claim 1, characterized in that: The ink stack top box (2) consists of two functional side plates (21) and an ink stack front box (22) and an ink stack rear box (23) fixed between the two functional side plates (21) with screws. The negative pressure ink box (3) is fixed between the ink stack front box (22) and the ink stack rear box (23). The two functional side plates (21) are fixedly connected to guide rails (211) on the side that is far away from each other, and the front end face of the functional side plates (21) is provided with shaft grooves (212).
4. The ink stack structure of the digital printer according to claim 3, characterized in that: The first transmission component (5) includes four gear and rack lifters (51) fixed with screws on the bottom wall of the ink stack bottom box (1) and a double-head reducer (52) fixedly connected to the side wall of the ink stack bottom box (1). A first motor (53) is fixed with screws on one end face of the double-head reducer (52). The output end of the first motor (53) is fixedly connected to the input end of the double-head reducer (52). The two output ends of the double-head reducer (52) are respectively fixedly connected to the input ends of the adjacent gear and rack lifters (51). A drive shaft (54) is connected between the adjacent gear and rack lifters (51). The output ends of the gear and rack lifters (51) are all fixedly connected with connecting discs (55). Two of the connecting discs (55) are fixed with screws to the front box (22) of the ink stack, and the other two connecting discs (55) are fixed with screws to the rear box (23) of the ink stack.
5. The ink stack structure of the digital printer according to claim 3, characterized in that: The second transmission component (6) includes a first rotating shaft (61) rotatably embedded between two functional side plates (21) and a second rotating shaft (62) located between two shaft grooves (212). Both ends of the first rotating shaft (61) and the second rotating shaft (62) are rotatably fitted with pulleys (63). A first transmission belt (64) is connected between two adjacent pulleys (63). A motor bracket (65) is fixed to the inner wall of the ink stack rear box (23). A second motor (66) is fixed to the motor bracket (65) with screws. A small pulley (67) is fixed to the output end of the second motor (66). A large pulley (68) is fixed to the outer side of the middle part of the first rotating shaft (61). A second transmission belt (69) is connected between the large pulley (68) and the small pulley (67).
6. The ink stack structure of the digital printer according to claim 5, characterized in that: An upper pressure plate (641) and a lower pressure plate (642) are respectively provided on the upper and lower sides of the first transmission belt (64) section. The upper pressure plate (641) and the lower pressure plate (642) are screwed together as a whole structure, and the section of the first transmission belt (64) is clamped and fixed between the two. The bottom end of the lower pressure plate (642) extends to one side of the functional side plate (21) and is fixedly connected to a slider (643). The slider (643) is slidably connected to the adjacent guide rail (211).
7. The ink stack structure of the digital printer according to claim 6, characterized in that: A scraper cartridge (4) with an open top is screwed between the top ends of the two lower pressure plates (642). A second ink guide tube (41) is fixedly embedded on the lower side of one end of the scraper cartridge (4) which is offset from the ink stack bottom box (1). The top end face of the second ink guide tube (41) is flush with the bottom wall of the ink stack bottom box (1). A scraper clip (42) is screwed on the bottom wall of the scraper cartridge (4) located above the ink stack bottom box (1). A scraper blade (43) is held between the two side walls of the scraper clip (42). The top edge of the scraper blade (43) has a blade for scraping off excess ink from the print head.
8. The ink stack structure of the digital printer according to claim 1, characterized in that: The bottom space of the negative pressure ink cartridge (3) gradually narrows from both sides to the middle, and a first ink guide tube (36) is fixedly embedded at the bottom of the negative pressure ink cartridge (3). The top end face of the first ink guide tube (36) is flush with the bottom wall of the negative pressure ink cartridge (3).