Shading device of UV ink-jet printer

Abstract

The utility model provides a shading device for a UV ink-jet printer, which belongs to the technical field of UV ink-jet printers, and particularly comprises a shading unit additionally arranged on the UV ink-jet printer, a shading plate and a driving unit, the driving unit comprises a driving motor and a rotating crank, a roller on the rotating crank is in rolling contact with a bearing plate I, so that the shading plate slides on a sliding rail, and the shading plate slides on the sliding rail. And then the spraying holes II in the fixing plate I are opened and blocked. According to the device, UV light is effectively prevented from entering the spraying hole II, the UV light is blocked outside the device, the spraying head is protected from being affected, and the device is simple in structure, small in size, capable of reducing the operation difficulty in a limited space and more flexible and adaptive.

Description

Technical Field

[0001] The utility model relates to the technical field of UV inkjet printers, in particular to a UV inkjet printer with a light-shielding device. Background Art

[0002] The Chinese utility model patent (CN215153114U) discloses a large-format handheld UV inkjet printer. The nozzle is arranged at the bottom of the inkjet printer, and ink (ink) is ejected through a long-strip nozzle slit. A light-shielding plate extends at the bottom of the inkjet printer, and a micro UV curing system is arranged on the back surface (the side of the nozzle) of the light-shielding plate. The light-shielding plate in the above structure is used to reflect more UV light onto the inkjet code formed by the ink (ink) ejected by the nozzle to quickly cure it. However, when part of the UV light enters the nozzle after multiple reflections, the ink (ink) in the nozzle is cured and dried, affecting the inkjet quality. Summary of the Utility Model

[0003] The main purpose of the utility model is to solve the above-mentioned technical problems.

[0004] According to the utility model, a light-shielding device for a UV inkjet printer is proposed, which includes a housing, a substrate, a control unit and a nozzle arranged on the substrate. The nozzle is arranged on a first fixing plate. A second ejection hole is formed on the first fixing plate. The first fixing plate is vertically connected to the substrate. Wherein, a light-shielding unit is arranged on the substrate. The light-shielding unit includes a second fixing plate, a fixing block, a light-shielding plate and a driving unit. The second fixing plate is arranged parallel to the substrate. The fixing block is vertically arranged on the second fixing plate. A slide rail is arranged on the bottom surface of the fixing block. A slider is slidably arranged on the slide rail. The slider is connected to a first bearing plate. A long groove is formed on the first bearing plate. The light-shielding plate is connected to the first bearing plate. The driving unit drives the first bearing plate to slide along the slide rail.

[0005] Preferably, the driving unit includes a driving motor and a rotating crank. The driving motor is arranged on a third bearing plate. The third bearing plate is horizontally arranged on the second fixing plate and / or the fixing block. The output shaft of the driving motor passes through the third bearing plate and is fixedly connected to the rotating crank. A roller is arranged at the other end of the rotating crank. The roller can roll and slide in the long groove on the first bearing plate.

[0006] Preferably, a profiling edge is arranged on the middle area of the light-shielding plate corresponding to the second ejection hole on the first fixing plate. The light-shielding plate can block the second ejection hole on the first fixing plate.

[0007] Preferably, two fixing blocks are arranged in parallel on the second fixing plate. The slider on one fixing block is connected to the first bearing plate. The slider on the other fixing block is connected to a second bearing plate. Both ends of the light-shielding plate are respectively connected to the first bearing plate and the second bearing plate.

[0008] Preferably, both the nozzle and the drive motor are electrically connected to the control unit.

[0009] Preferably, the housing includes a first housing and a second housing. The first housing is sealingly connected to the second housing. The housing and the substrate enclose a sealed space. A spray hole I is formed in the first housing corresponding to the spray hole II on the fixing plate I.

[0010] The technical solution of the present utility model adopts an additional light-shielding unit, including a light-shielding plate and a drive unit. The drive unit includes a drive motor and a rotating crank. The roller on the rotating crank is in rolling contact with the carrier plate I, so that the light-shielding plate slides on the slide rail, thereby realizing the opening and blocking of the spray hole II on the fixing plate I. This device effectively prevents UV light from entering the spray hole II, blocks the UV light outside the device, protects the nozzle from being affected. Moreover, this device has a simple structure and a small size, can reduce the operation difficulty in a limited space, and is more flexible and adaptable. Description of the Drawings

[0011] Referring to the accompanying drawings, the drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings are only for illustrative purposes and do not limit the protection scope of the present utility model.

[0012] Figure 1 It is a schematic diagram of the housing related to the embodiment of the present utility model.

[0013] Figure 2 It is a schematic diagram of the substrate related to the embodiment of the present utility model.

[0014] Figure 3 It is a schematic diagram of the fixing plate I related to the embodiment of the present utility model.

[0015] Figure 4 It is a schematic diagram of the fixing plate I and the nozzle related to the embodiment of the present utility model.

[0016] Figure 5 It is a schematic diagram of the light-shielding unit related to the embodiment of the present utility model.

[0017] Figure 6 It is a schematic diagram of the light-shielding unit from another perspective related to the embodiment of the present utility model.

[0018] Figure 7 It is a schematic diagram of the slide rail, the slider, the carrier plate I and the carrier plate II related to the embodiment of the present utility model.

[0019] Figure 8 It is a schematic diagram of the light-shielding unit from another perspective related to the embodiment of the present utility model.

[0020] Figure 9 Schematic diagram of the drive unit according to an embodiment of the present utility model.

[0021] Figure 10 Schematic diagram of the drive unit from another perspective according to an embodiment of the present utility model.

[0022] Explanation of the reference numerals in the drawings:

[0023] 11. Housing; 111. First housing; 111a. Injection hole I; 112. Second housing;

[0024] 12. Substrate; 121. Fixing plate I; 121a. Injection hole II; 122. L-shaped fixing bracket;

[0025] 13. Control unit;

[0026] 14. Nozzle;

[0027] 15. Light-shielding unit; 151. Fixing plate II; 152. Fixed block; 1521. Slide rail; 1522. Slide block; 1523. Carrier plate I; 1523a. Groove I; 1523b. Long groove; 1524. Carrier plate II; 1524a. Groove II;

[0028] 153. Light-shielding plate; 1531. Profiled edge; 1532. Second edge;

[0029] 154. Drive unit; 1541. Drive motor; 1542. Carrier plate III; 1543. Rotating crank; 1544. Roller.

[0030] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Please refer to Figure 1 and Figure 2 The UV inkjet printer proposed by the present utility model includes a housing 11, a substrate 12, a control unit 13, a nozzle 14 and a light-shielding unit 15.

[0033] The shell 11 includes a first shell 111 and a second shell 112. The first shell 111 and the second shell 112 can be an integrally formed structure with a relatively sealed structure to prevent light (such as UV light) from being reflected through the gap and entering the interior of the shell 11; it can also be a split structure to facilitate processing and manufacturing and reduce production costs. A sealed connection needs to be made during the assembly process.

[0034] The substrate 12 and the housing 11 form a closed space. A control unit 13 and other electrical components are disposed on the substrate 12 , and the control unit 13 works in coordination with the nozzle 14 and the shading unit 15 .

[0035] It should be noted that the x-axis, y-axis and z-axis in the drawings represent vertical coordinate axes. Figure 2 For example, the substrate 12 is vertically arranged on the xoz plane, and the control unit 13 is arranged in front of the substrate 12, which means that the surface of the substrate 12 facing the positive direction of the y-axis is the front (front side), and the surface facing the negative direction of the y-axis is the back (back side); similarly, on the xoy plane, the surface facing the positive direction of the z-axis is the upper side (top side), and the surface facing the negative direction of the z-axis is the lower side (bottom side); on the yoz plane, the surface facing the positive direction of the x-axis is the right side, and the surface facing the negative direction of the x-axis is the left side.

[0036] See also Figure 3 A fixing plate I121 is arranged in a square shape along the y-axis at the lower front end of the substrate 12. The substrate 12 is perpendicular to the fixing plate I121. A spray hole II121a is provided on the fixing plate I121. The nozzle 14 is arranged on the fixing plate I121 ( Figure 4 ), the nozzle of the nozzle 14 is vertically oriented toward the opening of the injection hole II 121a, and an L-shaped fixing frame 122 is provided at the connection between the substrate 12 and the fixing plate I 121 to play a role in stabilizing the connection.

[0037] As can be seen, the first housing 111 has a spray hole I111a corresponding to the spray hole II121a on the fixing plate I121, and the spray hole I111a is roughly equivalent to the spray hole II121a, or slightly larger than the spray hole II121a, so as to eliminate installation errors or processing errors ( Figure 1 ).

[0038] See also Figure 4 A fixing plate II 151 is arranged parallel to the lower rear end of the substrate 12 , and the fixing plate II 151 is used to fix the components of the shading unit 15 .

[0039] See also Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The shading unit 15 includes a fixing plate II 151 , a fixing block 152 , a shading plate 153 and a driving unit 154 .

[0040] A fixing block 152 is arranged in parallel with the front surface of the fixing plate II 151, and the fixing block 152 is vertically and stably connected to the fixing plate II 151. A slide rail 1521 is horizontally arranged (in the y-axis direction) on the bottom surface of the fixing block 152, and a slider 1522 is slidably arranged on the slide rail 1521. One slider is connected to the carrier plate I 1523, and the other slider is connected to the carrier plate II 1524. The carrier plate I 1523 is provided with a groove I 1523a for accommodating the slider. During the movement of the carrier plate I 1523, the groove I 1523a is reliably connected to the slider, improving the movement control accuracy of the carrier plate I 1523 on the slide rail 1521. The carrier plate II 1524 is provided with a groove II 1524a for accommodating the other slider. During the movement of the carrier plate II 1524, the groove II 1524a is reliably connected to the slider, improving the movement control accuracy of the carrier plate II 1524 on the slide rail 1521.

[0041] A long groove 1523b is formed in the carrier plate I 1523 along the x-axis direction. The long groove 1523b is used for accommodating the roller 1544, and the roller 1544 can roll and slide in the long groove 1523b.

[0042] The bottom surfaces of the carrier plate I 1523 and the carrier plate II 1524 are connected to a light-shielding plate 153. The light-shielding plate 153 slides on the slide rail 1521 through the slider 1522, that is, it moves back and forth along the y-axis direction.

[0043] Please refer to Figure 5 , both ends of the light-shielding plate 153 are respectively connected to the carrier plate I 1523 and the carrier plate II 1524. A profiling edge 1531 is arranged in the middle area of the light-shielding plate 153 corresponding to the injection hole II 121a on the fixing plate I 121. The light-shielding plate 153 is perpendicular to the profiling edge 1531 and extends along the y-axis square to form a second edge 1532. The second edge 1532 is parallel to the long side of the profiling edge 1531. It can be known that the area from the profiling edge 1531 to the second edge 1532 can block the injection hole II 121a on the fixing plate I 121 and / or the injection hole I 111a on the first housing 111.

[0044] Please refer to Figure 9 and Figure 10 , the driving unit 154 includes a driving motor 1541 and a rotating crank 1543. The driving motor 1541 is arranged on the carrier plate III 1542. The carrier plate III 1542 is horizontally arranged on the fixing plate II 151 and / or the fixing block 152. Preferably, the carrier plate III 1542 is simultaneously connected to the fixing plate II 151 and the fixing block 152 to achieve a stable connection.

[0045] The output shaft of the driving motor 1541 passes through the bearing plate III 1542 and is fixedly connected to the rotating crank 1543. A roller 1544 is provided on the bottom surface of the other end of the rotating crank 1543, and the roller 1544 can roll and slide in the long groove 1523b of the bearing plate I 1523. It can be known that the length of the rotating crank 1543 is greater than half of the width of the injection hole II 121a on the fixing plate I 121.

[0046] When the utility model is in use, in accordance with Figure 5 and Figure 9 Assemble the light-shielding unit 15. Stably assemble the fixing plate II 151, the fixing block 152 and the bearing plate III 1542. The fixing blocks 152 are arranged vertically and parallelly, and the bearing plate III 1542 is arranged horizontally. Install the slide rail 1521, the slider 1522, the bearing plate I 1523 and the bearing plate II 1524 on the bottom surface of the fixing block 152. One slider is installed in the groove I 1523a of the bearing plate I 1523, and the other slider is installed in the groove II 1524a of the bearing plate II 1524; Install the driving motor 1541 and the rotating crank 1543 on the bearing plate III 1542, ensuring that one end of the rotating crank 1543 is fixedly connected to the driving motor 1541, and the roller 1544 at the other end of the rotating crank 1543 is placed in the long groove 1523b of the bearing plate I 1523. Fix the light-shielding plate 153 on the bearing plate I 1523 and the bearing plate II 1524 respectively, so that the profiling edge 1531 of the light-shielding plate 153 matches the injection hole II 121a on the fixing plate I 121 or the injection hole I 111a on the first housing 111. On the other hand, install other components such as the control unit 13 on the substrate 12, then assemble the fixing plate I 121 and the L-shaped fixing bracket 122, install the nozzle 14 on the fixing plate I 121, and the nozzle of the nozzle 14 matches the injection hole II 121a on the fixing plate I 121. Install the assembled light-shielding unit 15 on the substrate 12, that is, install the fixing plate II 151 behind the substrate 12. After assembly, as Figure 2 shown, electrically connect the driving motor 1541, the nozzle 14 and the control unit 15 together, and then install the Figure 1 housing in

[0047] The control unit includes a driving module. The control unit starts the driving motor to run through the driving module and sends a signal for the driving motor to rotate or stop according to the output signal of the control unit. Specifically, when the control unit receives the signal that the nozzle starts to work, the control unit starts the driving motor to run through the driving module and makes the motor rotate a fixed angle, such as 180°. At this time, the light-shielding plate has moved to one side of the ejection hole II 121a on the fixing plate I 121, and the ejection hole II 121a is opened, and the UV inkjet printer starts the inkjet work. After the inkjet work is completed, when the control unit receives the signal that the nozzle stops working, the control unit starts the driving motor to run through the driving module and makes the motor rotate a fixed angle, such as 180°. At this time, the light-shielding plate has moved to the ejection hole II 121a on the fixing plate I 121, and the ejection hole II 121a is closed, and the UV curing treatment can be carried out to avoid the UV light being reflected and entering the ejection hole II 121a through pores or gaps, which may affect the ink in the nozzle.

Claims

1. A UV inkjet printer shading device, comprising a housing (11), a substrate (12), a control unit (13) and a nozzle (14) arranged on the substrate (12), wherein the nozzle (14) is arranged on a fixed plate I (121), a spray hole II (121a) is provided on the fixed plate I (121), and the fixed plate I (121) is vertically connected to the substrate (12), characterized in that: A shading unit (15) is arranged on the substrate (12), and the shading unit (15) comprises a fixing plate II (151), a fixing block (152), a shading plate (153) and a driving unit (154); the fixing plate II (151) is arranged parallel to the substrate (12); the fixing block (152) is arranged vertically on the fixing plate II (151); a sliding rail (1521) is arranged on the bottom surface of the fixing block (152); a sliding block (1522) is slidably arranged on the sliding rail (1521); the sliding block (1522) is connected to a carrying plate I (1523); a long groove (1523b) is provided on the carrying plate I (1523); the shading plate (153) is connected to the carrying plate I (1523); and the driving unit (154) drives the carrying plate I (1523) to slide along the sliding rail (1521).

2. The UV inkjet printer shading device according to claim 1, characterized in that: The driving unit (154) comprises a driving motor (1541) and a rotating crank (1543); the driving motor (1541) is arranged on a bearing plate III (1542); the bearing plate III (1542) is horizontally arranged on a fixing plate II (151) and / or the fixing block (152); an output shaft of the driving motor (1541) passes through the bearing plate III (1542) and is fixedly connected to the rotating crank (1543); a roller (1544) is arranged at the other end of the rotating crank (1543); and the roller (1544) can roll and slide in a long groove (1523b) on the bearing plate I (1523).

3. The UV inkjet printer shading device according to claim 2, characterized in that: A contoured edge (1531) is provided in the middle area of ​​the shading plate (153) corresponding to the injection hole II (121a) on the fixing plate I (121), and the shading plate (153) can shield the injection hole II (121a) on the fixing plate I (121).

4. The UV inkjet printer shading device according to claim 3, characterized in that: Two fixed blocks (152) are arranged in parallel on the fixed plate II (151), wherein a slider on one of the fixed blocks is connected to the carrier plate I (1523), and a slider on the other fixed block is connected to the carrier plate II (1524), and two ends of the shading plate (153) are respectively connected to the carrier plate I (1523) and the carrier plate II (1524).

5. The UV inkjet printer shading device according to claim 4, characterized in that: The nozzle (14) and the driving motor (1541) are both electrically connected to the control unit (13).

6. The UV inkjet printer shading device according to claim 5, characterized in that: The shell (11) comprises a first shell (111) and a second shell (112); the first shell (111) and the second shell (112) are sealedly connected; the shell (11) and the substrate (12) enclose a closed space; and the first shell (111) is provided with a spray hole I (111a) corresponding to the spray hole II (121a) on the fixing plate I (121).

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