High-precision digital ink-jet printing device

Abstract

The utility model relates to a high-precision digital ink-jet printing device. The problems that in the prior art, printing equipment is insufficient in printing precision, shadows are likely to appear after ink dripping, and the printing quality is affected are solved. The device comprises a rotary paper passing mechanism, the upper side of the rotary paper passing mechanism is connected with a printing nozzle through a rotary driving mechanism, one side of the rotary driving mechanism is provided with an infrared positioning mechanism used for positioning paper, and the bottom of the printing nozzle is provided with an ink sealing shielding assembly. The rotary paper passing mechanism is provided with a laser marking structure used for conducting printing marking on paper to be printed. The utility model has the advantages that the printing precision is high, the printing quality is effectively improved, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, and particularly relates to a high-precision digital inkjet printing device. Background Art

[0002] Printers are relatively common and widely used in daily life; the working principle of a printer is to print on paper through a print head; when existing printers are working, they generally can only print line by line. After printing one line, the print head needs to return to the origin to print the next line; at the same time, the printing width of existing printers is limited, and it takes a long time to complete a certain amount of printing work, and the printing efficiency is low, making it difficult to meet people's needs; at the same time, existing printers are not equipped with anti-collision devices, and the print heads of printers are extremely easy to collide and be damaged during the printing process, causing unnecessary losses and affecting the normal development of printing work; in addition, existing printing equipment has insufficient printing accuracy, and it is easy to produce shadows after ink dripping, affecting the printing quality.

[0003] In order to solve the deficiencies of the existing technology, people have carried out long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a new type of high-efficiency eight-head digital inkjet printer [CN201910551710.6], which includes a printer main body, on which a printing device, a print head cleaning device, a drying device, a feeding device, a paper feeding device, a printing platform and a display screen are provided. The printing device is provided with eight print heads, and the eight print heads are arranged in a staggered manner in pairs, so that the printer has a wide printing range and high printing efficiency, can perform back-and-forth printing and repeated printing, and can automatically clean the print heads after printing is completed.

[0004] The above solution solves the problems of low printing efficiency and easy collision damage of printers in the existing technology to a certain extent, but this solution still has many deficiencies. For example: the printing accuracy is insufficient, and it is easy to produce shadows after ink dripping, affecting the printing quality. Summary of the Invention

[0005] The purpose of the utility model is to solve the above problems and provide a high-precision digital inkjet printing device.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A high-precision digital inkjet printing device includes a rotary paper feeding mechanism, a printing nozzle is connected above the rotary paper feeding mechanism through a rotary driving mechanism, an infrared positioning mechanism for positioning the paper is arranged on one side of the rotary driving mechanism, a sealing and blocking assembly is arranged at the bottom of the printing nozzle, and a laser marking structure for marking the paper to be printed is arranged on the rotary paper feeding mechanism.

[0007] In the above-mentioned high-precision digital inkjet printing device, the rotary paper feeding mechanism includes rotary paper guiding rods arranged on both sides below the rotary driving mechanism, and both ends of the rotary paper guiding rods are rotatably connected to the positioning block bodies at the bottom of the rotary paper feeding mechanism. Linkage positioning wheel structures are provided at both ends of the rotary paper guiding rods, and the rotary paper guiding rods are driven by a rotary driving motor arranged on one side.

[0008] In the above-mentioned high-precision digital inkjet printing device, the linkage positioning wheel structure includes linkage wheel bodies arranged at the ends of two rotary paper guiding rods. The linkage wheel bodies are circumferentially provided with annular grooves, and the linkage wheel bodies on the rotary paper guiding rods at the same end are connected by a linkage belt body arranged in the annular grooves.

[0009] In the above-mentioned high-precision digital inkjet printing device, a number of sliding linkage grooves are provided on the inner side of the circumferential direction of the linkage wheel bodies. Sliding guide rails corresponding to the sliding linkage grooves are provided on the rotary paper guiding rods, and annular insertion grooves are provided at both ends of the linkage wheel bodies.

[0010] In the above-mentioned high-precision digital inkjet printing device, the infrared positioning mechanism includes a sliding regulator arranged on the positioning block body. The output end of the sliding regulator is arranged in the annular insertion groove at one end of the linkage positioning wheel structure and drives the linkage positioning wheel structure to move on the rotary paper guiding rod. An infrared distance sensor is arranged in the annular insertion groove at the other end of the linkage positioning wheel structure, and the infrared distance sensor is connected to the main control module through the sliding regulator.

[0011] In the above-mentioned high-precision digital inkjet printing device, the laser marking structure includes an installation cross frame arranged at the paper feeding end. A laser marking module is connected through a rotary linkage belt on the installation cross frame, and an infrared heating module is arranged on the laser marking module. The rotary linkage belt is driven by a marking stepping motor, and the marking stepping motor is connected to the main control module.

[0012] In the above-mentioned high-precision digital inkjet printing device, the rotary driving mechanism includes an adjusting frame body arranged on one side of the installation cross frame. A position adjusting belt driven by a printing stepping motor is arranged on the adjusting frame body. The printing nozzle is connected to the position adjusting belt and slides through the guiding of one side of the adjusting frame body.

[0013] In the above-mentioned high-precision digital inkjet printing device, an ink adding cavity is arranged on the inner wall of the printing nozzle. A number of ink outlet channels are arranged on the lower side of the ink adding cavity, and a resistance cavity corresponding to the ink outlet channels is arranged on the upper side. A thermistor is arranged in the resistance cavity, and the thermistor is connected to a heating module. The ink adding cavity is connected to an ink supply box, and the ink outlet channels are negative pressure channels.

[0014] In the above-mentioned high-precision digital inkjet printing device, the ink-sealing shielding assembly includes a conical elastic member disposed on the inner wall of the ink outlet channel, and an annular flexible seal is provided at the bottom of the ink outlet channel and is connected to the bottom of the conical elastic member and can follow the reset of the conical elastic member to close the bottom of the ink outlet channel.

[0015] In the above-mentioned high-precision digital inkjet printing device, the upper end of the conical elastic member is circumferentially attached to the inner wall of the ink outlet channel and the lower end is separated from the circumferential inner wall of the ink outlet channel. The annular flexible seal is composed of two rectangular halves and opens and closes with the movement of the bottom of the conical elastic member. A heat source detection module is provided at the bottom of the printing nozzle.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows: a heat source mark is made at the printing position through a laser marking structure at the paper feeding end. During printing, the heat source position is detected by the heat source detection module, and the paper is positioned by the infrared positioning mechanism to ensure the accuracy of the printing position. Secondly, by providing an ink-sealing shielding assembly in the ink outlet channel, the ink outlet channel can be immediately closed after the ink outlet is completed, reducing the continuous ink dripping situation, avoiding printing shadows, and improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the linkage positioning wheel of the present utility model;

[0019] Figure 3 is the structural schematic diagram when the rotation driving mechanism of the present utility model is connected to the laser marking structure;

[0020] Figure 4 is the structural schematic diagram of the rotary paper feeding mechanism in the present utility model;

[0021] Figure 5 is the cross-sectional view of the printing nozzle in the present utility model;

[0022] Figure 6 is the structural schematic diagram of the ink-sealing shielding assembly in the present utility model;

[0023] Figure 7 is the local structural connection block diagram of the present utility model;

[0024] In the figure: Rotating paper feeding mechanism 1, rotating paper guiding rod 11, positioning block 12, linkage positioning wheel structure 13, linkage wheel body 131, annular groove 132, linkage belt body 133, sliding linkage groove 134, sliding guide rail 135, annular insertion groove 136, rotating drive motor 14, rotating drive mechanism 2, adjusting frame body 21, printing stepping motor 22, position adjusting belt 23, printing nozzle 3, ink adding chamber 31, ink outlet channel 32, resistance chamber 33, thermistor 34, heating module 35, heat source detection module 36, infrared positioning mechanism 4, sliding regulator 41, infrared distance sensor 42, ink sealing shielding component 5, conical elastic member 51, annular flexible seal 52, laser marking structure 6, mounting cross frame 61, rotary linkage belt 62, laser marking module 63, infrared heating module 64, marking stepping motor 65, main control module 7. Detailed implementation manners

[0025] The following further elaborates on the present utility model in conjunction with the accompanying drawings and detailed implementation manners.

[0026] As Figure 1-7 shown, a high-precision digital inkjet printing device includes a rotating paper feeding mechanism 1. A printing nozzle 3 is connected above the rotating paper feeding mechanism 1 through a rotating drive mechanism 2. An infrared positioning mechanism 4 for positioning the paper is provided on one side of the rotating drive mechanism 2. An ink sealing shielding component 5 is provided at the bottom of the printing nozzle 3. A laser marking structure 6 for printing marks on the paper to be printed is provided on the rotating paper feeding mechanism 1.

[0027] Among them, the rotating paper feeding mechanism 1 includes rotating paper guiding rods 11 arranged on both sides below the rotating drive mechanism 2. Both ends of the rotating paper guiding rod 11 are rotatably connected to the positioning blocks 12 at the bottom of the rotating paper feeding mechanism 1. Linkage positioning wheel structures 13 are provided at both ends of the rotating paper guiding rod 11, and the rotating paper guiding rod 11 is driven by a rotating drive motor 14 provided on one side.

[0028] The rotating paper guiding rod 11 located in front of the rotating drive mechanism 2 is the paper feeding end, and the one located behind the rotating drive mechanism 2 is the paper discharging end. When the two rotating paper guiding rods 11 are driven by the drive motor, they rotate synchronously to feed the paper.

[0029] Obviously, the linkage positioning wheel structure 13 includes linkage wheel bodies 131 provided at the ends of the two rotating paper guiding rods 11. Annular grooves 132 are provided circumferentially on the linkage wheel bodies 131, and the linkage wheel bodies 131 on the rotating paper guiding rods 11 at the same end are connected by linkage belt bodies 133 provided in the annular grooves 132.

[0030] The inner walls of the linkage wheel bodies 131 can position both sides of the paper, and position detection is performed through the infrared distance sensor 42.

[0031] Further, a number of sliding linkage grooves 134 are provided on the circumferentially inner side of the linkage wheel body 131. On the rotating paper guiding rod 11, there are sliding guide rails 135 corresponding to the sliding linkage grooves 134, and annular insertion grooves 136 are provided at both ends of the linkage wheel body 131.

[0032] With such a setting, when the linkage wheel body 131 rotates, it can drive the rotating paper guiding rod 11 to rotate synchronously.

[0033] Furthermore, the infrared positioning mechanism 4 includes a sliding regulator 41 provided on the positioning block body 12. The output end of the sliding regulator 41 is arranged in the annular insertion groove 136 at one end of the linkage positioning wheel structure 13 and drives the linkage positioning wheel structure 13 to move on the rotating paper guiding rod 11. An infrared distance sensor 42 is arranged in the annular insertion groove 136 at the other end of the linkage positioning wheel structure 13, and the infrared distance sensor 42 is connected to the main control module 7.

[0034] The sliding regulator 41 pushes the linkage wheel body 131 to move according to the paper distance detected by the infrared distance sensor 42. Due to the setting of the annular insertion groove 136, the linkage wheel body 131 can rotate synchronously during the movement, that is, the paper position can be continuously adjusted during printing.

[0035] Specifically, the laser marking structure 6 includes a mounting cross frame 61 provided at the paper feeding end. A laser marking module 63 is connected to the mounting cross frame 61 through a rotary linkage belt 62, and an infrared heating module 64 is provided on the laser marking module 63. The rotary linkage belt 62 is driven by a marking stepping motor 65, and the marking stepping motor 65 is connected to the main control module 7.

[0036] The infrared heating module 64 mainly adds a central heat source at the printing position of the paper according to the printing content to ensure the alignment accuracy during paper printing.

[0037] More specifically, the rotation driving mechanism 2 includes an adjusting frame body 21 provided on one side of the mounting cross frame 61. A position adjusting belt 23 driven by a printing stepping motor 22 is provided on the adjusting frame body 21. The printing nozzle 3 is connected to the position adjusting belt 23 and slides through the guiding of one side of the adjusting frame body 21.

[0038] In detail, an ink adding cavity 31 is provided on the inner wall of the printing nozzle 3. A number of ink outlet channels 32 are provided on the lower side of the ink adding cavity 31, and a resistance cavity 33 corresponding to the ink outlet channels 32 is provided on the upper side. A thermistor 34 is provided in the resistance cavity 33, and the thermistor 34 is connected to a heating module 35. The ink adding cavity 31 is connected to an ink supply box, and the ink outlet channels 32 are negative pressure channels.

[0039] Due to the negative pressure setting, when there is no ink dripping, the ink in the ink outlet channel 32 is in a static state. When ink dripping is required, the heating module 35 instantaneously heats the thermistor 34 to a high temperature, causing bubbles to form at the bottom of the thermistor 34, thereby squeezing the ink in the ink outlet channel 32 to achieve ink output. Here, a cooling module connected to the thermistor 34 is also provided on the inner wall of the printing nozzle 3 to rapidly cool the thermistor 34. When the thermistor 34 is cooled and the bubbles disappear, due to the negative pressure setting, the ink in the ink channel 32 is sucked upward until the ink in the ink filling cavity 31 flows in, and the ink flow remains static at the bottom of the ink channel 32.

[0040] Preferably, the ink sealing and blocking assembly 5 includes a conical elastic member 51 provided on the inner wall of the ink outlet channel 32, and an annular flexible seal 52 is provided at the bottom of the ink outlet channel 32 and is connected to the bottom of the conical elastic member 51 and can follow the reset of the conical elastic member 51 to close the bottom of the ink outlet channel 32.

[0041] The use of the ink sealing and blocking assembly 5 is mainly to ensure the stability of the ink in the ink channel 32 and prevent ink dripping and leakage caused by negative pressure changes.

[0042] In addition, the upper circumference of the conical elastic member 51 fits with the inner wall of the ink outlet channel 32, and the lower end is separated from the circumferential inner wall of the ink outlet channel 32. The annular flexible seal 52 is composed of two rectangular halves and opens and closes with the movement of the bottom of the conical elastic member 51. A heat source detection module 36 is provided at the bottom of the printing nozzle 3.

[0043] In summary, the principle of this embodiment is as follows: A laser marking structure 6 is provided at the paper feeding end, and the infrared heating module 64 adds a central heat source at the printing position of the paper according to the printing content to ensure the alignment accuracy during paper printing. During printing, the heat source detection module 36 is used to detect the printing position and the infrared positioning mechanism 4 is used to detect the paper position. The sliding regulator 41 is used to push the linkage wheel body 131 to move, thereby adjusting the paper position. Secondly, during the printing process, the ink sealing and blocking assembly 5 is used to prevent ink leakage from the ink outlet channel 32 and cause printing shadows, thereby improving the printing accuracy and printing quality.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0045] Although terms such as rotary paper feeding mechanism 1, rotary paper guiding rod 11, positioning block 12, linkage positioning wheel structure 13, linkage wheel body 131, annular groove 132, linkage belt body 133, sliding linkage groove 134, sliding guide rail 135, annular insertion slot 136, rotary drive motor 14, rotary drive mechanism 2, adjustment frame body 21, printing stepping motor 22, position adjustment belt 23, printing nozzle 3, ink adding chamber 31, ink outlet channel 32, resistance chamber 33, thermistor 34, heating module 35, heat source detection module 36, infrared positioning mechanism 4, sliding regulator 41, infrared distance sensor 42, ink sealing and shielding assembly 5, conical elastic member 51, annular flexible seal 52, laser marking structure 6, mounting cross frame 61, rotary linkage belt 62, laser marking module 63, infrared heating module 64, marking stepping motor 65, main control module 7 are used more frequently in this text, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A high-precision digital inkjet printing device, comprising a rotary paper feeding mechanism (1), and a printing nozzle (3) is connected above the rotary paper feeding mechanism (1) through a rotary driving mechanism (2), characterized in that, On one side of the described rotation driving mechanism (2), there is an infrared positioning mechanism (4) for positioning the paper. At the bottom of the printing nozzle (3), there is an ink sealing and shielding component (5). On the rotating paper feeding mechanism (1), there is a laser marking structure (6) for marking the paper to be printed.

2. The high-precision digital inkjet printing device according to claim 1, wherein The described rotating paper feeding mechanism (1) includes rotating paper guiding rods (11) arranged on both sides below the rotation driving mechanism (2). Both ends of the rotating paper guiding rods (11) are rotatably connected to the positioning block bodies (12) at the bottom of the rotating paper feeding mechanism (1). At both ends of the rotating paper guiding rods (11), there are linkage positioning wheel structures (13), and the rotating paper guiding rods (11) are driven by a rotating driving motor (14) arranged on one side.

3. A high-precision digital inkjet printing device according to claim 2, characterized in that, The described linkage positioning wheel structure (13) includes linkage wheel bodies (131) arranged at the ends of two rotating paper guiding rods (11). The circumferences of the linkage wheel bodies (131) are provided with annular grooves (132), and the linkage wheel bodies (131) on the rotating paper guiding rods (11) at the same end are connected by a linkage belt body (133) arranged in the annular groove (132).

4. A high-precision digital inkjet printing device according to claim 3, characterized in that, On the inner circumference of the described linkage wheel body (131), there are several sliding linkage grooves (134). On the rotating paper guiding rods (11), there are sliding guide rails (135) corresponding to the sliding linkage grooves (134), and at both ends of the linkage wheel body (131), there are annular insertion grooves (136).

5. The high-precision digital inkjet printing device according to claim 3, wherein The described infrared positioning mechanism (4) includes a sliding regulator (41) arranged on the positioning block body (12). The output end of the sliding regulator (41) is arranged in the annular insertion groove (136) at one end of the linkage positioning wheel structure (13) and drives the linkage positioning wheel structure (13) to move on the rotating paper guiding rod (11). An infrared distance sensor (42) is arranged in the annular insertion groove (136) at the other end of the linkage positioning wheel structure (13). The infrared distance sensor (42) is connected to the main control module (7) through the sliding regulator (41).

6. The high-precision digital inkjet printing device according to claim 5, characterized in that, The described laser marking structure (6) includes a mounting cross frame (61) arranged at the paper feeding end. A laser marking module (63) is connected to the mounting cross frame (61) through a rotary linkage belt (62). An infrared heating module (64) is arranged on the laser marking module (63). The rotary linkage belt (62) is driven by a marking stepping motor (65), and the marking stepping motor (65) is connected to the main control module (7).

7. An apparatus for high-precision digital inkjet printing according to claim 6, wherein, The described rotation driving mechanism (2) includes an adjusting frame body (21) arranged on one side of the mounting cross frame (61). On the adjusting frame body (21), there is a position adjusting belt (23) driven by a printing stepping motor (22). The printing nozzle (3) is connected to the position adjusting belt (23) and slides through the guiding of one side of the adjusting frame body (21).

8. A high-precision digital inkjet printing device according to claim 1, characterized in that, The inner wall of the printing nozzle (3) is provided with an ink filling cavity (31). A plurality of ink outlet channels (32) are provided on the lower side of the ink filling cavity (31), and a resistance cavity (33) corresponding to the ink outlet channels (32) is provided on the upper side. A thermistor (34) is provided in the resistance cavity (33). The thermistor (34) is connected to a heating module (35). The ink filling cavity (31) is connected to an ink supply cartridge, and the ink outlet channels (32) are negative pressure channels.

9. The high-precision digital inkjet printing device according to claim 8, characterized in that, The ink sealing and shielding assembly (5) includes a conical elastic member (51) provided on the inner wall of the ink outlet channel (32). An annular flexible seal (52) is provided at the bottom of the ink outlet channel (32), which is connected to the bottom of the conical elastic member (51) and can follow the reset of the conical elastic member (51) to close the bottom of the ink outlet channel (32).

10. A high-precision digital inkjet printing device according to claim 9, characterized in that, The upper end of the conical elastic member (51) is circumferentially attached to the inner wall of the ink outlet channel (32), and the lower end is separated from the circumferential inner wall of the ink outlet channel (32). The annular flexible seal (52) is composed of two rectangular halves and opens and closes with the movement of the bottom of the conical elastic member (51). A heat source detection module (36) is provided at the bottom of the printing nozzle (3).

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