Ink-jet printer and ink-jet printing method

Abstract

The invention relates to the technical field of ink-jet printing, and provides an ink-jet printer and an ink-jet printing method.The ink-jet printer comprises a rack, a paper conveying mechanism, a printing module and a control system, the printing module comprises a printing disc and a plurality of nozzles, and the ink-jet printer further comprises a lifting mechanism, a moisturizing mechanism and a driving mechanism; the lifting mechanism is used for controlling the printing module to move up and down; the moisturizing mechanism comprises a moisturizing box; and the driving mechanism is used for controlling the moisturizing box to do reciprocating motion in the running direction of the paper conveying mechanism. The ink-jet printing method comprises the following steps that S1, the lifting mechanism controls the printing module to ascend; s2, the driving mechanism controls the moisturizing box to be away from the printing module; s3, the vacuum adsorption module moves to the position under the printing module, and the lifting mechanism controls the printing module to descend; s4, the vacuum adsorption module carries out adsorption operation on the multiple nozzles in the printing module; and S5, the lifting mechanism controls the printing module to continue to descend, and ink-jet printing is conducted on the paper on the conveying mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of inkjet printing, and particularly relates to an inkjet printer and an inkjet printing method. Background Art

[0002] An inkjet printer combines water-based pigment inks of CMYK colors by means of inkjet. Currently, it is already possible to accurately inkjet CMYK pigment inks, and to a certain extent, an inkjet printer can be used by connecting the device to print some documents we need.

[0003] After the current inkjet printer completes the printing work, the print head is exposed in the air, and the inkjet condensed after natural cooling will clog the print head. To solve this problem, currently, most inkjet printers are designed with a preheating mechanism to preheat the print head in advance to avoid its clogging. However, on the one hand, this will increase the complexity of the entire inkjet printer and raise the cost; on the other hand, since preheating takes time, the printing efficiency will be greatly reduced. Summary of the Invention

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide an inkjet double-sided printing machine and its printing method, which has a simple structure and can improve the printing efficiency.

[0005] According to the first aspect of the present invention, there is provided an inkjet printer, including a frame, a paper feeding mechanism, a printing module, and a control system. The printing module includes a printing plate and a plurality of print heads, and further includes a lifting mechanism, a moisturizing mechanism, and a driving mechanism;

[0006] The lifting mechanism is used to control the up and down movement of the printing module;

[0007] The moisturizing mechanism is arranged between the paper feeding mechanism and the printing module. The moisturizing mechanism includes a moisturizing box, the top of the moisturizing box is provided with a moisturizing groove, and the moisturizing groove is filled with ink;

[0008] A driving mechanism, which is used to control the reciprocating movement of the moisturizing box along the running direction of the paper feeding mechanism.

[0009] Further, the lifting mechanism includes a first guide rail, a lead screw, and a first motor;

[0010] The first guide rail is fixedly installed on the frame longitudinally and is slidably connected to the printing plate. The lead screw passes through the printing plate longitudinally and is threadedly connected to the printing plate. Both ends of the lead screw are rotatably connected to the frame. The first motor is electrically connected to the control system and is used to control the rotation of the lead screw.

[0011] Further, the driving mechanism includes a second guide rail, a first pulley, a second pulley, a first synchronous belt, and a second motor;

[0012] The second guide rail is fixedly installed on the frame along the running direction of the paper feeding mechanism. The second guide rail is slidably connected to the moisture box. The first pulley and the second pulley are respectively arranged outside both ends of the second guide rail. The first pulley and the second pulley are both rotatably connected to the frame. Both ends of the first synchronous belt are respectively sleeved on the first pulley and the second pulley. The first synchronous belt is fixedly connected to the moisture box. The second motor is electrically connected to the control system and is used to control the rotation of the first pulley or the second pulley.

[0013] Further, a vacuum adsorption module is further included. The vacuum adsorption module is used to adsorb a plurality of the nozzles. The vacuum adsorption module includes a third guide rail, a slider, an adsorption disc, a vacuum machine, a third pulley, a fourth pulley, a second synchronous belt, and a third motor;

[0014] The third guide rail is arranged horizontally and is fixedly connected to the frame. The slider is arranged on the third guide rail and is slidably connected to the third guide rail. The adsorption disc is fixedly installed on the slider. At least one adsorption port is opened on the adsorption disc. The vacuum machine is fixedly installed on the frame and is electrically connected to the control system. The negative pressure port of the vacuum machine is communicated with a plurality of the adsorption ports through a hose. The third pulley and the fourth pulley are respectively arranged outside both ends of the third guide rail. The third pulley and the fourth pulley are both rotatably connected to the frame. Both ends of the second synchronous belt are respectively sleeved on the third pulley and the fourth pulley. The second synchronous belt is fixedly connected to the adsorption disc. The third motor is electrically connected to the control system and is used to control the rotation of the third pulley or the fourth pulley.

[0015] Further, a sponge pad is placed in the moisture tank, and the sponge pad is adapted to the moisture tank.

[0016] According to the second aspect of the present invention, an inkjet printing method is provided, including the following steps:

[0017] S1. The lifting mechanism controls the printing module to rise;

[0018] S2. The driving mechanism controls the moisture box to move away from the printing module;

[0019] S3. The vacuum adsorption module moves to directly below the printing module, and the lifting mechanism controls the printing module to descend;

[0020] S4. The vacuum adsorption module performs an adsorption operation on multiple nozzles in the printing module. After the adsorption operation is completed, the vacuum adsorption module moves away from the printing module;

[0021] S5. The lifting mechanism controls the printing module to continue to descend and perform inkjet printing on the paper on the conveying mechanism.

[0022] Advantages of the present invention: An inkjet double-sided printing machine and its printing method provided by the present invention, on the one hand, designs a driving mechanism and a moisturizing mechanism, which are simple in structure and convenient to manufacture; on the other hand, in the initial state, the moisturizing box is in contact with multiple nozzles in the printing module, thereby preventing the nozzles from being blocked due to natural cooling. In this way, the nozzles can be directly used during subsequent printing operations, improving the printing efficiency. Description of the Drawings

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a front structural schematic diagram of the present invention;

[0025] Figure 3 is a partial structural schematic diagram of the present invention.

[0026] Reference numerals: 10 - frame, 20 - paper feeding mechanism, 30 - printing module, 31 - printing plate, 32 - nozzle, 40 - lifting mechanism, 50 - moisturizing mechanism, 51 - moisturizing box, 52 - moisturizing groove, 60 - driving mechanism, 70 - vacuum adsorption module. Detailed Embodiments

[0027] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] In this application, unless otherwise clearly defined and limited, the terms "connection" and "fixation" shall 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 internal communication of two components or the interaction relationship between two components. 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.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "horizontal", "top", "bottom", "upper", "lower", "inner" and "outer" is based on the orientation or positional relationship shown in the drawings. It is 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 therefore should not be construed as a limitation to the present invention.

[0030] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, "a plurality of" means more than two unless otherwise specifically defined.

[0031] As Figures 1-3 shown, the present invention provides an inkjet printer, which includes a frame 10, a paper feeding mechanism 20, a printing module 30 and a control system. The printing module 30 includes a printing plate 31 and a plurality of nozzles 32. The above contents are all prior arts and the specific structures will not be elaborated herein. The present invention further includes a lifting mechanism 40, a moisture preservation mechanism 50 and a driving mechanism 60.

[0032] The lifting mechanism 40 is used to control the up and down movement of the printing module 30.

[0033] The moisture preservation mechanism 50 is arranged between the paper feeding mechanism 20 and the printing module 30. The moisture preservation mechanism 50 includes a moisture preservation box 51. A moisture preservation groove 52 extending downward is opened at the top of the moisture preservation box 51, and ink is contained in the moisture preservation groove 52.

[0034] The driving mechanism 60 is used to control the reciprocating movement of the moisture preservation box 51 along the running direction of the paper feeding mechanism 20.

[0035] When the present invention is in operation, the paper feeding mechanism 20 successively transports the paper to directly below the printing module 30, and then the printing module 30 successively performs inkjet printing on the paper directly below.

[0036] In the initial state, a plurality of nozzles 32 in the printing module 30 are all in contact with the ink in the moisture preservation box 51, thereby preventing the nozzles 32 from being blocked due to natural cooling. In this way, the nozzles 32 can be directly used during subsequent printing operations, improving the printing efficiency.

[0037] The specific printing process of the present invention is as follows: First, the lifting mechanism 40 controls the printing module 30 to rise, so that a plurality of nozzles 32 in the printing module 30 are all separated from the ink in the moisture preservation box 51. Then, the driving mechanism 60 controls the moisture preservation box 51 to move away from the printing module 30. Finally, the lifting mechanism 40 controls the printing module 30 to descend to perform inkjet printing on the paper directly below on the conveying mechanism.

[0038] In one embodiment, the lifting mechanism 40 includes a first guide rail, a lead screw, and a first motor.

[0039] The first guide rail is fixedly installed on the frame 10 longitudinally and is slidably connected to the printing tray 31. The lead screw passes through the printing tray 31 longitudinally and is threadedly connected to the printing tray 31. Both ends of the lead screw are rotatably connected to the frame 10. The first motor is fixedly installed on the frame 10 and is electrically connected to the control system for controlling the rotation of the lead screw.

[0040] The specific working process of the lifting mechanism 40 is as follows: The control system controls the first motor to start, and the first motor drives the lead screw to rotate. Under the action of the first guide rail, the printing tray 31 moves up and down, and the entire printing module 30 also moves up and down synchronously. The structure of this lifting mechanism 40 is simple, which is convenient for production and manufacturing.

[0041] In one embodiment, the driving mechanism 60 includes a second guide rail, a first pulley, a second pulley, a first synchronous belt, and a second motor.

[0042] The second guide rail is fixedly installed on the frame 10 along the running direction of the paper feeding mechanism 20. The second guide rail is slidably connected to the moisture preservation box 51. The first pulley and the second pulley are respectively arranged outside both ends of the second guide rail, and both the first pulley and the second pulley are rotatably connected to the frame 10. Both ends of the first synchronous belt are respectively sleeved on the first pulley and the second pulley, and the first synchronous belt is fixedly connected to the moisture preservation box 51. The second motor is fixedly installed on the frame 10 and is electrically connected to the control system for controlling the rotation of the first pulley or the second pulley.

[0043] The specific working process of the driving mechanism 60 is as follows: The control system controls the second motor to start, the second motor drives the corresponding first pulley or second pulley to rotate, and the first synchronous belt starts to run, thereby driving the moisture preservation box 51 to reciprocate along the running direction of the paper feeding mechanism 20. The structure of this driving mechanism 60 is simple, which is convenient for production and manufacturing.

[0044] In one embodiment, a vacuum adsorption module 70 is further included. The vacuum adsorption module 70 is used for adsorbing a plurality of nozzles 32. The vacuum adsorption module 70 includes a third guide rail, a slider, an adsorption disc, a vacuum machine, a third pulley, a fourth pulley, a second synchronous belt, and a third motor.

[0045] The third guide rail is arranged in the horizontal direction and is fixedly connected to the frame 10. The slider is arranged on the third guide rail and is slidably connected to the third guide rail. The adsorption disk is fixedly mounted on the slide seat, and at least one adsorption port is opened on the adsorption disk. The vacuum machine is fixedly mounted on the frame 10 and is electrically connected to the control system, and the negative pressure port of the vacuum machine is connected to the multiple adsorption ports through a hose. The third pulley and the fourth pulley are respectively arranged on the outer sides of the two ends of the third guide rail, and the third pulley and the fourth pulley are both rotatably connected to the frame 10. The two ends of the second synchronous belt are respectively sleeved on the third pulley and the fourth pulley, and the second synchronous belt is fixedly connected to the adsorption disk. The third motor is fixedly mounted on the frame 10, and the third motor is electrically connected to the control system for controlling the rotation of the third pulley or the fourth pulley.

[0046] In the initial state, the suction plate is located away from the printing module 30 .

[0047] When the driving mechanism 60 controls the moisturizing box 51 to move away from the printing module 30, the control system controls the third motor to start, and the third motor drives the corresponding third pulley or fourth pulley to rotate, and the second synchronous belt starts to run, thereby driving the adsorption plate to move to the bottom of the printing module 30, and the lifting mechanism 40 controls the printing module 30 to descend. The control system controls the vacuum machine to start, and the vacuum machine will perform an adsorption operation on the multiple nozzles 32 in the printing module 30. After the adsorption operation is completed, the control system controls the third motor to start again, so that the vacuum adsorption module 70 is away from the printing module 30.

[0048] The design of the vacuum adsorption module 70 can, on the one hand, clean the nozzle 32 and adsorb excess ink on the nozzle 32, so that the subsequent inkjet printing is clearer; on the other hand, it can reduce damage to the nozzle 32.

[0049] In one embodiment, a sponge pad is placed in the moisturizing groove 52, and the sponge pad is adapted to the moisturizing groove 52. The design of the sponge pad can keep the ink in the moisturizing groove 52 evenly distributed and more stable, and will not spill due to shaking.

[0050] According to a second aspect of the present invention, there is provided an inkjet printing method, comprising the following steps:

[0051] S1. The control system controls the first motor to start, and the first motor drives the lead screw to rotate. Under the action of the first guide rail, the printing plate 31 moves upward, and the entire printing module 30 also moves upward synchronously.

[0052] S2, the control system controls the second motor to start, the second motor drives the corresponding first pulley or second pulley to rotate, the first synchronous belt starts to run, thereby driving the moisturizing box 51 to move along the running direction of the paper feeding mechanism 20, and the moisturizing box 51 is away from the printing module 30.

[0053] S3. The control system controls the third motor to start. The third motor drives the corresponding third pulley or fourth pulley to rotate, and then the second synchronous belt will start to run, driving the suction cup to move to directly below the printing module 30. The lifting mechanism 40 controls the printing module 30 to descend to the suction working position. The control system controls the vacuum machine to start, and the vacuum machine will perform a suction operation on the multiple nozzles 32 in the printing module 30.

[0054] S4. After the suction operation is completed, the control system controls the third motor to start again, causing the vacuum suction module 70 to move away from the printing module 30.

[0055] S5. The lifting mechanism 40 controls the printing module 30 to continue to descend and perform inkjet printing on the paper on the conveying mechanism.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0057] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An inkjet printer, comprising a frame, a paper feeding mechanism, a printing module and a control system, wherein the printing module comprises a printing disc and a plurality of nozzles, characterized in that: It also includes a lifting mechanism, a moisturizing mechanism and a driving mechanism; The lifting mechanism is used to control the printing module to move up and down; The moisturizing mechanism is arranged between the paper feeding mechanism and the printing module, and the moisturizing mechanism comprises a moisturizing box, a moisturizing groove is provided inside the moisturizing box, and ink is filled in the moisturizing groove; A driving mechanism is used to control the reciprocating motion of the moisturizing box along the running direction of the paper conveying mechanism.

2. The inkjet double-sided printing machine according to claim 1, characterized in that: The lifting mechanism comprises a first guide rail, a lead screw and a first motor; The first guide rail is fixedly mounted on the frame along the longitudinal direction and is slidably connected to the printing disk. The lead screw passes through the printing disk along the longitudinal direction and is threadedly connected to the printing disk. Both ends of the lead screw are rotatably connected to the frame. The first motor is electrically connected to the control system for controlling the rotation of the lead screw.

3. The inkjet double-sided printing machine according to claim 1, characterized in that: The driving mechanism comprises a second guide rail, a first pulley, a second pulley, a first synchronous belt and a second motor; The second guide rail is fixedly installed on the frame along the running direction of the paper conveying mechanism, the second guide rail is slidably connected to the moisturizing box, the first pulley and the second pulley are respectively arranged on the outer sides of both ends of the second guide rail, the first pulley and the second pulley are both rotatably connected to the frame, the two ends of the first synchronous belt are respectively sleeved on the first pulley and the second pulley, the first synchronous belt is fixedly connected to the moisturizing box, and the second motor is electrically connected to the control system for controlling the rotation of the first pulley or the second pulley.

4. The inkjet double-sided printing machine according to claim 1, characterized in that: It also includes a vacuum adsorption module, which is used to adsorb the plurality of nozzles, and the vacuum adsorption module includes a third guide rail, a slider, an adsorption disk, a vacuum machine, a third pulley, a fourth pulley, a second synchronous belt and a third motor; The third guide rail is arranged horizontally and fixedly connected to the frame, the slider is arranged on the third guide rail and slidably connected to the third guide rail, the adsorption plate is fixedly mounted on the slide seat, and at least one adsorption port is opened on the adsorption plate, the vacuum machine is fixedly mounted on the frame and electrically connected to the control system, the negative pressure port of the vacuum machine is connected to the multiple adsorption ports through a hose, the third pulley and the fourth pulley are respectively arranged on the outer sides of both ends of the third guide rail, and the third pulley and the fourth pulley are both rotatably connected to the frame, and the two ends of the second synchronous belt are respectively sleeved on the third pulley and the fourth pulley, the second synchronous belt is fixedly connected to the adsorption plate, and the third motor is electrically connected to the control system for controlling the rotation of the third pulley or the fourth pulley.

5. The inkjet double-sided printing machine according to claim 1, characterized in that: Sponge pads are placed around the moisturizing groove, and the sponge pads are adapted to the moisturizing groove.

6. An inkjet printing method, applied to the inkjet double-sided printing machine according to claim 4, characterized in that: The following steps are involved: S1, the lifting mechanism controls the printing module to rise; S2, the driving mechanism controls the moisturizing box to move away from the printing module; S3, the vacuum adsorption module moves to the bottom of the printing module, and the lifting mechanism controls the printing module to descend; S4, the vacuum adsorption module performs an adsorption operation on the multiple nozzles in the printing module, and the vacuum adsorption module moves away from the printing module after the adsorption operation is completed; S5. The lifting mechanism controls the printing module to continue to descend, and performs inkjet printing on the paper on the conveying mechanism.

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