Spray printing ink box printing and cleaning device for polaroid production

Abstract

The utility model discloses a jet printing ink box printing and cleaning device for polaroid production. The jet printing ink box printing and cleaning device comprises a jet printing machine body, an ink jet head assembly and a cleaning piece. The ink jet head assemblies are symmetrically arranged on the two sides of the jet printing machine body in a staggered mode. The ink jet head assembly comprises a sliding block, a lifting block, an ink jet head body and a driving piece. The slide block can move along the width direction of the polaroid film; the lifting block is connected with the sliding block and can move in the vertical direction relative to the sliding block. The ink jet head body is rotationally connected with the bottom end of the lifting block; the driving piece is arranged on the lifting block and is in transmission connection with the ink jet head body; and the cleaning piece is arranged on the jet printing machine main body and is matched with the ink jet head body. The utility model relates to the technical field of polaroid production, and through the arrangement, the ink jet head body can be periodically and automatically cleaned, so that the definition of printing patterns on the film surface of a polaroid by the ink jet head is ensured, and the recognition precision of a subsequent process is further improved.

Description

Technical Field

[0001] The utility model belongs to the field of polarizer production, and relates to defect spraying and marking technology. Specifically, it is an inkjet cartridge printing and cleaning device for polarizer production. Background Technique

[0002] A polarizer is an optical functional material that polarizes light. It converts natural light into polarized light and has a very wide range of applications. It is one of the important materials for liquid crystal displays. In a liquid crystal panel, imaging must be achieved through two orthogonal polarizers. Nowadays, the market demand for liquid crystal displays is increasing day by day, and polarizers have good development trends in the future.

[0003] A polarizer mainly consists of polyvinyl alcohol (PVA), triacetyl cellulose (TAC), a protective film, a release film, and a pressure-sensitive adhesive. After PVA dyeing, stretching, washing, and lamination, a semi-finished product with a TAC-PVA-TAC structure is obtained. Then, by laminating the protective film, coating the pressure-sensitive adhesive, and pasting the release film, a finished polarizer with qualified optical and mechanical properties is finally obtained. In these process steps, different types of defects will occur in each layer structure of the polarizer, such as foreign objects, unevenness, bright spots, bubbles, etc. An automatic optical inspection (AOI) device is responsible for detecting these defects with high detection capabilities and then conveying the coordinates of each defect to an automatic spraying device. The automatic spraying device sprays a specific pattern at a position within 1 cm from the defect on the film surface of the polarizer, so that unqualified products can be quickly picked out in the subsequent process. However, there will be a problem of blurry inkjet printing of the ink cartridge when the automatic spraying device works for a long time. Specifically, due to the gradual drying of the surface of the ink cartridge, there is a situation of blockage, resulting in the defect spraying pattern of the inkjet head being difficult to be printed on the film surface of the polarizer or being printed unclearly on the film surface of the polarizer. Furthermore, it will affect the identification and rejection in the subsequent process, and there will be situations such as missed identification.

[0004] Therefore, an inkjet cartridge printing and cleaning device for polarizer production is needed to solve the above problems. Content of the Utility Model

[0005] The present utility model aims to solve at least one of the technical problems existing in the prior art; for this purpose, the present utility model provides a printing and cleaning device for an inkjet cartridge used in the production of polarizing plates, so that the inkjet head body can be periodically and autonomously cleaned, thereby ensuring the clarity of the pattern printing on the film surface of the polarizing plate by the inkjet head, and further improving the recognition accuracy of subsequent processes. The present utility model is provided with an inkjet head assembly and a cleaning member, and the inkjet head assembly includes a slider, a lifting block, an inkjet head body and a driving member. By means of the slider and the lifting block, the inkjet head body can move in the horizontal direction and the vertical direction to ensure that it can print a defective pattern at the defective position on the film surface of the optical sheet, and with the aid of the driving member, the inkjet head body can deflect in the direction towards the printing machine main body, so as to contact the cleaning member and realize the self-cleaning function, thereby enabling the inkjet head body to be periodically and autonomously cleaned to ensure the clarity of the pattern printing on the film surface of the polarizing plate by the inkjet head body, and further improving the recognition accuracy of subsequent processes.

[0006] To achieve the above object, a first aspect of the present utility model provides a printing and cleaning device for an inkjet cartridge used in the production of polarizing plates, including a printing machine main body, an inkjet head assembly and a cleaning member;

[0007] The inkjet head assemblies are arranged symmetrically in an interleaved manner on both sides of the printing machine main body;

[0008] The inkjet head assembly includes a slider, a lifting block, an inkjet head body and a driving member;

[0009] The slider can move along the width direction of the polarizing plate film;

[0010] The lifting block is connected to the slider and can move relative to the slider in the vertical direction;

[0011] The inkjet head body is rotatably connected to the bottom end of the lifting block;

[0012] The driving member is arranged on the lifting block and is in transmission connection with the inkjet head body for controlling the inkjet head body to deflect in the direction close to the printing machine main body;

[0013] The cleaning member is arranged on the printing machine main body and is adapted to the inkjet head body, so that when the inkjet head body deflects, it can contact the inkjet head body and clean the inkjet head body.

[0014] Further, a slide rail is arranged on the outer wall of the printing machine main body;

[0015] The slider is slidably installed in the slide rail through a lead screw transmission assembly.

[0016] Further, the maximum distance that the slider moves in the slide rail is greater than half of the width length of the polarizing plate film.

[0017] Further, the lifting block and the sliding block are connected by an electric telescopic rod.

[0018] Further, the inkjet head body and the lifting block are rotatably connected by a rotating shaft;

[0019] One end of the rotating shaft extends to the outside of the lifting block and is fixedly connected with a first gear;

[0020] The driving member meshes with the first gear.

[0021] Further, the driving member includes a forward and reverse motor and a second gear;

[0022] The forward and reverse motor is embedded inside the lifting block, and the output end is connected with the second gear;

[0023] The second gear meshes with the first gear.

[0024] Further, the cleaning member is detachably mounted on the outer wall of the printer body;

[0025] One side of the cleaning member in contact with the inkjet head body is provided with an arc-shaped structure.

[0026] Further, the cleaning member is arranged at the surface edge position of the printer body.

[0027] Compared with the prior art, the beneficial effects of the present utility model are:

[0028] By providing an inkjet head assembly and a cleaning member, and making the inkjet head assembly include a sliding block, a lifting block, an inkjet head body and a driving member, by means of the sliding block and the lifting block, the inkjet head body can move in the horizontal direction and the vertical direction to ensure that it can print a defective pattern at the defective position on the light sheet film surface, and by means of the driving member, the inkjet head body can deflect in the direction towards the printer body to contact the cleaning member, realizing the self-cleaning function. Therefore, through this kind of setting, the inkjet head body can be periodically self-cleaned to ensure the clarity of the pattern printing of the inkjet head body on the polarizing film surface, and further improve the recognition accuracy of subsequent processes.

[0029] Moreover, by arranging inkjet head assemblies symmetrically and staggeredly on both sides of the printer body, and making the sliding distance of the sliding block along the slide rail direction of the printer body greater than half of the width length of the polarizing film, the marking ranges of the two inkjet head bodies can completely cover the width length of the polarizing film, ensuring the defective marking effect of the polarizing film and preventing the situation of partial non-coverage. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 FIG. 4 is a schematic structural diagram of a printing and cleaning device for an inkjet cartridge used in the production of a polarizing plate according to an embodiment of the present invention;

[0032] Figure 2 FIG. 5 is a top view of a printing and cleaning device for an inkjet cartridge used in the production of a polarizing plate according to an embodiment of the present invention;

[0033] Figure 3 FIG. 6 is a front view of a printing and cleaning device for an inkjet cartridge used in the production of a polarizing plate according to an embodiment of the present invention;

[0034] Figure 4 FIG. 7 is a front view of the inkjet head body during cleaning in a printing and cleaning device for an inkjet cartridge used in the production of a polarizing plate according to an embodiment of the present invention.

[0035] Reference numerals in the drawings:

[0036] 1. Printer main body; 11. Slide rail; 2. Inkjet head assembly; 21. Slide block; 22. Lifting block; 23. Inkjet head body; 24. Driving member; 3. Cleaning member; 4. Electric telescopic rod. Detailed implementation manners

[0037] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] Please refer to Figures 1 to 4 , an embodiment of the first aspect of the present invention provides a printing and cleaning device for an inkjet cartridge used in the production of a polarizing plate, including a printer main body 1, an inkjet head assembly 2, and a cleaning member 3.

[0039] Among them, the inkjet head assemblies 2 are arranged symmetrically in a staggered manner on both sides of the printer main body 1, used to expand the inkjet marking range of the polarizing plate film and ensure full coverage of the marking in the width direction of the polarizing plate film.

[0040] Specifically, the inkjet head assembly 2 includes a slide block 21, a lifting block 22, an inkjet head body 23, and a driving member 24.

[0041] The slider 21 can move along the width direction of the polarizer film, and the lifting block 22 is connected to the slider 21 and can move in the vertical direction relative to the slider 21. By setting the slider 21 and the lifting block 22, the inkjet head body 23 is driven to move in the horizontal direction and the vertical direction, so that the inkjet head body 23 can be moved to a specific position and a better height to perform pattern marking operation, thereby improving the pattern marking quality.

[0042] The inkjet head body 23 is rotatably connected to the bottom end of the lifting block 22, so that the inkjet head body 23 can be relatively deflected with the lifting block 22, so that the inkjet head body 23 can contact the cleaning member 3 under the action of external force to complete the cleaning function, that is, after the inkjet head body 23 has been working for a period of time, it can perform self-cleaning to ensure the clarity of the printed mark on the polarizer film surface pattern, so as to ensure that subsequent processes can be accurately identified, and avoid subsequent identification errors or failure to identify due to unclear or difficult to print pattern marks.

[0043] In addition, the driving member 24 is disposed on the lifting block 22 and is transmission-connected to the inkjet head body 23 , so as to control the inkjet head body 23 to deflect in a direction close to the printer body 1 .

[0044] Specifically, the cleaning member 3 is arranged on the printer body 1 and is adapted to the inkjet head body 23, so that when the inkjet head body 23 is deflected, it can contact with the inkjet head body 23 and clean the inkjet head body 23, that is, the deflection of the inkjet head body 23 is completed through the driving member 24 to contact with the cleaning member 3, thereby completing the cleaning function.

[0045] The device is provided with an inkjet head assembly 2 and a cleaning member 3, and the inkjet head assembly 2 includes a slider 21, a lifting block 22, an inkjet head body 23 and a driving member 24. With the help of the slider 21 and the lifting block 22, the inkjet head body 23 can be moved in the horizontal direction and the vertical direction to ensure that it can print the defective pattern at the defective position of the polarizer film surface. With the help of the driving member 24, the inkjet head body 23 can be deflected in the direction toward the printer body 1, so as to contact with the cleaning member 3 to realize the self-cleaning function. Therefore, through this arrangement, the inkjet head body 23 can be periodically cleaned autonomously to ensure the clarity of the pattern printed on the polarizer film surface by the inkjet head body 23, thereby improving the accuracy of subsequent process recognition.

[0046] In other embodiments, the printer body 1 is further limited to provide support and a power source for the movement of the slider 21 .

[0047] Specifically, a slide rail 11 is disposed on the outer wall of the printer body 1 , and the slider 21 is slidably installed in the slide rail 11 through a screw transmission assembly.

[0048] It should be noted that the maximum distance that the slider 21 moves in the slide rail 11 is greater than half of the width of the polarizer film. Figure 2 As shown in the figure, the dotted rectangle indicates the polarizer film, d is half of the width of the polarizer film, and L is the maximum distance that the slider 21 moves in the slide rail 11.

[0049] By arranging staggered and symmetrical inkjet head assemblies 2 on both sides of the printer body 1, and making the sliding distance of the slider 21 along the slide rail 11 of the printer body 1 greater than half of the width and length of the polarizer film, the marking range of the two inkjet head bodies 23 can completely cover the width and length of the polarizer film, ensuring the marking effect of polarizer film defects, and preventing the occurrence of partial coverage.

[0050] In actual application, the inkjet printing and cleaning device for the production of polarizers described in this embodiment can be provided with multiple groups to be located on the defect detection table of the polarizer film, so as to realize uninterrupted defect pattern printing and marking operation of the polarizer film during movement, thereby avoiding the situation where a single inkjet printing and cleaning device for the production of polarizers cannot meet the application requirements due to a large number of defects in the local area of ​​the polarizer film.

[0051] In a further embodiment, the lifting block 22 is connected to the slider 21 via an electric telescopic rod 4, that is, the lifting block 22 is controlled by the electric telescopic rod 4 to drive the inkjet head body 23 to rise and fall to a specific height for printing, so that the pattern printing effect is better and clearer.

[0052] In other embodiments, the inkjet head body 23 and the lifting block 22 are rotatably connected via a rotating shaft.

[0053] One end of the rotating shaft extends to the outside of the lifting block 22 and is fixedly connected with a first gear, and the driving member 24 is meshed with the first gear. Therefore, when the driving member 24 is running, it can drive the rotating shaft to rotate, thereby completing the rotation control of the inkjet head body 23.

[0054] It should be noted that the inkjet head body 23 and the rotating shaft are fixedly connected.

[0055] In a specific example, the driving member 24 includes a forward and reverse motor and a second gear.

[0056] Among them, the forward and reverse motor is embedded inside the lifting block 22, and its output end is connected to the second gear, and the second gear meshes with the first gear. Therefore, by the forward and reverse operation of the forward and reverse motor, the inkjet head body 23 can reciprocally contact the cleaning member 3 for cleaning, thereby improving the cleaning effect on the inkjet head body 23.

[0057] Moreover, by setting the first gear and the second gear, when the inkjet head body 23 is in a vertical state (i.e., the working state), it can also prevent shaking and the like, that is, it has a self-locking effect to ensure the effect of pattern printing.

[0058] In a further embodiment, the cleaning member 3 is detachably mounted on the outer wall of the printing machine main body 1.

[0059] Among them, the side of the cleaning member 3 in contact with the inkjet head body 23 is provided with an arc-shaped structure to ensure that the cleaning member 3 will not cause hard collision to the inkjet head body 23, thereby improving the protection effect on the inkjet head body 23.

[0060] In a specific example, the cleaning member 3 is set as a non-woven fabric block with alcohol, and it can elastically fit with the inkjet head body 23 to improve the cleaning effect on the inkjet head body 23.

[0061] In addition, the non-woven fabric block can be pasted on the outer wall of the printing machine main body 1 for detachable replacement.

[0062] It should also be noted that in order to facilitate the operator to replace the cleaning member 3, the position of the cleaning member 3 is further defined. Specifically, the cleaning member 3 is arranged at the surface edge position of the printing machine main body 1, which is convenient for the operator to take, disassemble and replace.

[0063] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An inkjet printing and cleaning device for a polarizer production inkjet cartridge, characterized in that, It includes an inkjet printer main body (1), an inkjet head assembly (2), and a cleaning member (3); The inkjet head assemblies (2) are arranged symmetrically in a staggered manner on both sides of the inkjet printer main body (1); The inkjet head assembly (2) includes a slider (21), a lifting block (22), an inkjet head body (23), and a driving member (24); The slider (21) can move along the width direction of the polarizing film; The lifting block (22) is connected to the slider (21) and can move relative to the slider (21) in the vertical direction; The inkjet head body (23) is rotatably connected to the bottom end of the lifting block (22); The driving member (24) is arranged on the lifting block (22) and is in transmission connection with the inkjet head body (23) for controlling the inkjet head body (23) to deflect in the direction close to the inkjet printer main body (1); The cleaning member (3) is arranged on the inkjet printer main body (1) and is adapted to the inkjet head body (23), so that when the inkjet head body (23) deflects, it can contact the inkjet head body (23) and clean the inkjet head body (23).

2. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing plate according to claim 1, characterized in that, A slide rail (11) is arranged on the outer wall of the inkjet printer main body (1); The slider (21) is slidably installed in the slide rail (11) through a lead screw transmission assembly.

3. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing plate according to claim 2, characterized in that, The maximum distance that the slider (21) moves in the slide rail (11) is greater than half of the width length of the polarizing film.

4. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing plate according to claim 1, wherein, The lifting block (22) is connected to the slider (21) through an electric telescopic rod (4).

5. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing film according to claim 1, characterized in that, The inkjet head body (23) is rotatably connected to the lifting block (22) through a rotating shaft; One end of the rotating shaft extends to the outside of the lifting block (22) and is fixedly connected with a first gear; The driving member (24) meshes with the first gear.

6. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing plate according to claim 5, characterized in that, The driving member (24) includes a forward and reverse motor and a second gear; The forward and reverse motor is embedded in the lifting block (22), and the output end is connected to the second gear; The second gear meshes with the first gear.

7. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing plate according to claim 1, characterized in that, The cleaning member (3) is detachably installed on the outer wall of the inkjet printer main body (1); One side of the cleaning member (3) in contact with the inkjet head body (23) is set as an arc structure.

8. The printing and cleaning device for the inkjet cartridge used in the production of the polarizing plate according to claim 1, wherein, The cleaning member (3) is arranged at the edge position on the surface of the inkjet printer main body (1).

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