A PDLC electrode conformal preparation device and method

Abstract

The present application relates to the technical field of PDLC electrodes, and specifically to a device and method for preparing PDLC electrodes in a conformal manner. The device for preparing PDLC electrodes in a conformal manner comprises: a base, a main beam, and a printing mechanism arranged on the main beam. The printing mechanism comprises a motor working platform, a steering motor, a scraper mechanism, and an ink return knife frame. The scraper mechanism and the ink return knife frame can rotate along with the steering motor. The printing direction of the scraper is controlled by the steering motor to ensure that the scraper and the printing direction are always in a vertical state during the printing process, thereby realizing the conformal preparation of arc electrodes. For the partitioned side electrodes of the partitioned PDLC, not only can the uniform and controllable electrode thickness be ensured, but also the electronic slurry coating in unnecessary areas can be reduced by designing the graphics of the screen loading and unloading areas, thereby reducing the production cost while ensuring reliability.

Description

Technical Field

[0001] The present application relates to the technical field of PDLC electrodes, and in particular to a device and method for preparing PDLC electrodes in a conformal manner. Background Art

[0002] PDLC (polymer dispersed liquid crystal) dimming film becomes transparent when power is applied and foggy when power is not applied. It can be used for laminated dimming glass, back-mounted liquid crystal film for projection, etc. It can maintain the transparency of the space while conveniently protecting privacy and is widely used.

[0003] The structure of the PDLC dimming film includes a first substrate, a first conductive layer, a first electrode, a polymer dispersed liquid crystal layer, a second electrode, a second conductive layer and a second substrate. The first conductive layer is powered by the first electrode, and the second conductive layer is powered by the second electrode. When powered, the film becomes transparent, and when not powered, the film becomes foggy. The PDLC dimming film includes a partitioned dimming film and a non-partitioned dimming film, wherein the non-partitioned dimming film has a first electrode and a second electrode, and the partitioned dimming film includes a collinear electrode and a partitioned electrode.

[0004] At present, the conventional screen printing process is used to make PDLC electrodes. In this case, the printing direction is perpendicular to the direction of the electrode. In the process of going up or down the steps, there will be a certain gap between the part of the screen near the step and the PDLC electrode. The electronic paste will overflow here, resulting in unclear printing boundaries. When printing integrated partition electrodes, the overflow of electronic paste to adjacent partition electrodes will cause the two zones to be turned on, thereby making the partition function invalid. Summary of the invention

[0005] The purpose of the present application is to provide a PDLC electrode conformal preparation device and method to solve the problem that the existing PDLC electrode conformal preparation device easily causes adjacent partition electrodes to be conductive when preparing partition electrodes.

[0006] The present application provides a PDLC electrode conformal preparation device, comprising:

[0007] A base, on which two parallel and spaced main beam guide rails are arranged;

[0008] A main beam spans between the two main beam guide rails and is slidably connected to the main beam guide rails, wherein the sliding direction of the main beam along the main beam guide rail is a first direction, and the main beam located between the two main beam guide rails is provided with a hollow area;

[0009] A printing mechanism is installed in the hollow area of ​​the main beam and is slidably connected to the main beam, wherein the sliding direction of the printing mechanism along the main beam is a second direction, and the second direction is perpendicular to the first direction;

[0010] The printing mechanism comprises a motor working platform, a steering motor, a scraper mechanism and an ink return knife frame; the upper part of the main beam is located at both sides of the hollow area and is respectively provided with first guide rails, and the upper part of the motor working platform is located at both sides of the hollow area and is respectively provided with sliders, which are slidably connected with the first guide rails through the sliders; the lower part of the main beam is located at both sides of the hollow area and is respectively provided with second guide rails, and the lower part of the motor working platform is located at both sides of the hollow area and is respectively provided with first linear motors, which are slidably connected with the second guide rails through the first linear motors;

[0011] The steering motor is fixedly mounted on the motor working platform, the rotating shaft of the steering motor extends to the bottom of the motor working platform, the scraper mechanism and the ink return knife holder are connected to the rotating shaft of the steering motor through a fixed platform, and the distance from the first guide rail to the rotating shaft center of the steering motor is greater than the distance from the second guide rail on the same side to the rotating shaft center of the steering motor.

[0012] In a possible implementation, the distance from the first guide rail to the center of the rotation shaft of the steering motor is greater than the distance from the second guide rail on the same side to the center of the rotation shaft of the steering motor, and the difference between the two is 5 mm to 50 mm.

[0013] In a possible implementation, a buffer pad is provided between the slider and the motor working platform, the upper surface of the buffer pad is bonded to the bottom surface of the slider, and the lower surface of the buffer pad is bonded to the upper surface of the motor working platform.

[0014] In a possible implementation, the scraper mechanism includes: a scraper support shaft, a scraper steering motor, a mounting device, a scraper frame and a scraper; a first cylinder is arranged on the fixed platform, the telescopic end of the first cylinder passes through the fixed platform and is connected to the top of the mounting device, the scraper steering motor is installed on one side of the mounting device, the scraper support shaft is installed on the mounting device, and is transmission-connected to the rotating shaft of the scraper steering motor, the scraper frame is installed on the scraper support shaft, and the scraper is installed on the scraper frame, and the scraper steering motor is used to drive the scraper frame to rotate to achieve angle adjustment of the scraper.

[0015] In a possible implementation, the ink return tool holder includes a tool holder body and an ink return tool; the tool holder body is fixed on the fixed platform by a second cylinder.

[0016] In a possible implementation, the first guide rail has a dovetail groove structure in cross section along the first direction, a concave groove matching the dovetail groove structure is provided at the center of the slider along the second direction, and the cross section of the concave groove along the first direction is a trapezoidal structure.

[0017] In a possible implementation, the main beam is a gantry structure, and a second linear motor is respectively provided at the bottom end of both sides of the main beam. The second linear motor is slidably connected to the main beam guide rail, and the main beam is driven to slide along the main beam guide rail along the first direction by the second linear motor.

[0018] In one possible implementation, the first cylinder includes: a cylinder body and a piston rod, the piston rod slidingly fitting with the cylinder body; an electrically controlled intake valve is provided on one side of the cylinder body, an electrically controlled exhaust valve is provided on the other side of the cylinder body, an air pressure sensor is provided on the end of the cylinder body away from the piston rod, the air pressure sensor is located between the electrically controlled intake valve and the electrically controlled exhaust valve, and is used to detect the pressure in the cylinder body, so as to control the extension or contraction of the piston rod by controlling the opening of the electrically controlled intake valve or the electrically controlled exhaust valve; the second cylinder has the same structure as the first cylinder.

[0019] In a possible implementation, a pressure sensor is provided on the scraper to control the printing uniformity of the scraper according to the scraper pressure acquired by the pressure sensor.

[0020] The embodiment of the present invention further provides a PDLC electrode preparation method. Based on the above-mentioned PDLC electrode conformal preparation device, a printing screen is set in the area where the PDLC electrode is to be prepared. The printing screen includes an arc screen. The arc screen includes a first buffer area, a first straight line segment, an arc buffer segment, a second straight line segment and a second buffer area which are sequentially arranged from the printing start point to the printing end point. The PDLC electrode preparation method includes:

[0021] In the first buffer area, the scraper steering motor is controlled to rotate so that the scraper is adjusted from a non-printing angle to a printing angle;

[0022] When printing the first straight line segment, controlling the scraper steering motor so that the scraper prints along the extension direction of the first straight line segment at a printing angle;

[0023] When entering the arc-shaped buffer section for printing, the scraper steering motor is controlled to rotate so that the scraper is adjusted from the printing angle to the non-printing angle by 1-2°, and the steering motor is controlled to rotate so that the scraper prints along the trajectory of the arc-shaped buffer section;

[0024] When entering the second straight line segment for printing, the scraper steering motor is controlled to rotate so that the scraper returns to the printing angle, and the steering motor is controlled to rotate so that the scraper prints along the extension direction of the second straight line segment;

[0025] In the second buffer area, the scraper steering motor is controlled to rotate so that the scraper is adjusted to a non-printing angle.

[0026] The embodiments of the present application have at least the following technical effects:

[0027] The PDLC electrode conformal preparation device provided in the embodiment of the present application, the scraper mechanism and the ink return knife holder can rotate with the steering motor, and the printing direction of the scraper is controlled by the steering motor to ensure that the scraper and the printing direction are always in a nearly vertical state during the printing process, thereby realizing the conformal preparation of the arc electrode, and for the partitioned side electrodes of the partitioned PDLC, not only can the electrode thickness be guaranteed to be uniform and controllable, but also the electronic slurry coating in non-essential areas can be reduced by designing the graphics of the screen loading and unloading areas, thereby reducing the production cost while ensuring reliability, and at the same time, by limiting the distance from the first guide rail to the center of the rotating shaft of the steering motor to be greater than the distance from the second guide rail on the same side to the center of the rotating shaft of the steering motor, the lever arm is larger and can preferentially bear the torque generated during the steering, thereby ensuring that the movement of the linear motor is not affected by the steering torque, which is more conducive to realizing conformal steering printing of PDLC electrodes during the printing of electrodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of a top view of a PDLC electrode conformal preparation device provided in an embodiment of the present application;

[0030] Figure 2 Provided for the embodiments of this application Figure 1 Sectional view of the middle main beam along the AA direction;

[0031] Figure 3 A schematic diagram of the installation structure of a scraper mechanism of a PDLC electrode conformal preparation device provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the installation structure of an ink return knife holder of a PDLC electrode conformal preparation device provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the mechanism of a first cylinder of a PDLC electrode conformal preparation device provided in an embodiment of the present application;

[0034] Figure 6 Provided for the embodiments of this application Figure 1 Sectional view of the middle base and main beam along the BB direction;

[0035] Figure 7 A schematic diagram of a process for preparing a PDLC electrode in accordance with an embodiment of the present application;

[0036] Figure 8 A schematic diagram of an arc-shaped screen and a printing track for preparing a PDLC electrode in a PDLC electrode conformal preparation method provided in an embodiment of the present application;

[0037] Fig. 9 A schematic diagram of the angle change of a scraper in a first buffer area in a PDLC electrode conformal preparation method provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of the angle change of a scraper when entering a bend in an arc-shaped buffer section in a PDLC electrode conformal preparation method provided in an embodiment of the present application;

[0039] Fig.11 A schematic diagram of the angle change of a scraper when the arc-shaped buffer section is bent in a PDLC electrode conformal preparation method provided in an embodiment of the present application;

[0040] Fig.12 A schematic diagram of the angle change of a scraper in a first buffer area in a PDLC electrode conformal preparation method provided in an embodiment of the present application;

[0041] Fig.13 A schematic diagram of a linear screen and a printing track for preparing a PDLC electrode in another PDLC electrode conformal preparation method provided in an embodiment of the present application;

[0042] Fig.14 A flow chart of another method for conformal preparation of PDLC electrodes provided in an embodiment of the present application.

[0043] Icons: 100-base; 110-main beam guide rail; 120-second linear motor; 101-first buffer area; 102-first straight line segment; 103-arc buffer segment; 104-second straight line segment; 105-second buffer area; 106-printed electrode; 107-third buffer area; 108-third straight line segment; 109-fourth buffer area; 200-main beam; 200a-hollow area; 210-upper part of the main beam; 220-lower part of the main beam; 300-printing mechanism; 310-steering motor; 32 0-motor working platform; 330-scraper mechanism; 331-mounting device; 332-scraper support shaft; 333-scraper frame; 334-scraper steering motor; 340-ink return frame; 350-fixed platform; 360-first cylinder; 361-cylinder body; 362-piston rod; 363-electrically controlled intake valve; 364-electrically controlled exhaust valve; 365-air pressure sensor; 370-second cylinder; 400-first guide rail; 500-slider; 600-buffer pad; 700-first linear motor; 800-second guide rail. DETAILED DESCRIPTION

[0044] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0046] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0047] Combination Figures 1 to 6As shown, an embodiment of the present application provides a PDLC electrode conformal preparation device, including: a base 100, a main beam 200 and a printing mechanism 300; wherein, two parallel and spaced main beam rails 110 are arranged on the base 100; the main beam 200 spans between the two main beam rails 110 and is slidably connected to the main beam rails 110, and the sliding direction of the main beam 200 along the main beam rails 110 is a first direction, and the main beam 200 located between the two main beam rails 110 is provided with a hollow area 200a, so as to facilitate the printing mechanism 300 to slide back and forth in the hollow area 200a.

[0048] Specifically, the printing mechanism 300 is installed in the hollow area 200a of the main beam 200 and is slidably connected to the main beam 200. The sliding direction of the printing mechanism 300 along the main beam 200 is the second direction, and the second direction is perpendicular to the first direction. That is to say, the sliding direction of the printing mechanism 300 along the main beam 200 is nearly perpendicular to the movement direction of the main beam 200 itself. By reasonably controlling the movement of the printing mechanism 300 and the main beam 200, the two-dimensional plane movement of the printing mechanism 300 can be realized.

[0049] Furthermore, the printing mechanism 300 includes a motor working platform, a steering motor 310, a scraper mechanism 330 and an ink return knife frame 340. The upper part 210 of the main beam is located on both sides of the hollow area 200a and is respectively provided with first guide rails 400. Slide blocks 500 are respectively provided on both sides of the hollow area 200a above the motor working platform 320, and are slidingly connected to the first guide rails 400 through the sliders 500; the lower part 220 of the main beam is located on both sides of the hollow area 200a and is respectively provided with second guide rails 800. The lower part 220 of the main beam is located on both sides of the hollow area 200a and is respectively provided with first linear motors 700, and is slidingly connected to the second guide rails 800 through the first linear motor 700. In this way, the slider 500 is symmetrically installed on the main beam 200 through four guide rails, thereby ensuring the stable operation of the PDLC electrode conformable preparation device during the printing process, thereby reducing the problem of uneven force during printing, which is beneficial to improving the electrode printing quality.

[0050] The steering motor 310 is fixedly mounted on the motor working platform, and the rotating shaft of the steering motor 310 extends to the bottom of the motor working platform. The scraper mechanism 330 and the ink return knife frame 340 are connected to the rotating shaft of the steering motor 310 through the fixed platform 350. The directions of the scraper mechanism 330 and the ink return knife frame 340 can be controlled by the steering motor 310, so that the scraper operating angle can be adjusted more flexibly.

[0051] It is understandable that the steering motor 310 will turn during the printing process, and torque will be generated during the steering process. Therefore, the embodiment of the present invention limits the distance from the first guide rail 400 to the center of the rotation axis of the steering motor 310 to be greater than the distance from the second guide rail 800 on the same side to the center of the rotation axis of the steering motor 310. In this way, the lever arm is larger and can preferentially bear the torque generated during the steering, thereby ensuring that the movement of the linear motor is not affected by the steering torque, which is more conducive to realizing conformal steering printing of PDLC electrodes during the printing of electrodes.

[0052] Optionally, the difference between the distance from the first guide rail 400 to the center of the rotation shaft of the steering motor 310 and the distance from the second guide rail 800 on the same side to the center of the rotation shaft of the steering motor 310 ( Figure 2 d) is 5mm~50mm. The difference d in this distance is the difference in the length of the force arm. The force arm at the track is larger, and the track can withstand a larger torque during the rotation process, thereby reducing the force on the linear motor during the rotation process. However, if the distance difference d here is too small, the torque borne by the track is too small, which will cause the linear motor to withstand a larger torque; and if the distance difference d here is too large, the lower part 220 of the main beam will extend too long, which is easy to interfere with the components below the steering motor 310.

[0053] The PDLC electrode conformal preparation device provided in this embodiment, the scraper mechanism 330 and the ink return knife holder 340 can rotate with the steering motor 310, and the steering motor 310 controls the printing direction of the scraper to ensure that the scraper and the printing direction are always in a vertical or nearly vertical state during the printing process, thereby realizing the conformal preparation of the arc electrode area, and the prepared arc electrode area is coated with slurry evenly, and the thickness is uniform and controllable, thereby avoiding the problem that the coating quality is easily reduced in the special-shaped (arc and other corner areas) area, and for the partitioned side electrode of the partitioned PDLC, not only can the uniform and controllable electrode thickness be ensured, but also the electronic slurry coating of non-essential areas can be reduced by designing the graphics of the screen loading and unloading areas, thereby reducing the production cost while ensuring reliability, and at the same time, by limiting the distance from the first guide rail 400 to the center of the rotating shaft of the steering motor 310 to be greater than the distance from the second guide rail 800 on the same side to the center of the rotating shaft of the steering motor 310, so that the force arm is larger and can preferentially bear the torque generated during the steering, ensuring that the movement of the linear motor is not affected by the steering torque, thereby being more conducive to realizing conformal steering printing of PDLC electrodes during the printing electrode process.

[0054] In some embodiments, continue to refer to Figure 2 A buffer pad 600 is provided between the slider 500 and the motor working platform, the upper surface of the buffer pad 600 is bonded to the bottom surface of the slider 500, and the lower surface of the buffer pad 600 is bonded to the upper surface of the motor working platform.

[0055] In this embodiment, since the scraper is pressed down during the electrode printing process, it will give an upward reaction force to the electrode conformal preparation device. The buffer pad 600 will evenly distribute the reaction force on the two guide rails and filter the vibration during the operation of the printing mechanism 300 to ensure the stability of the printing action, reduce the impact on the lower linear motor, and make the motor operation control more precise.

[0056] In some embodiments, Figure 3 As shown, the scraper mechanism 330 includes: a scraper support shaft 332, a scraper steering motor 334, a mounting device 331, a scraper frame 333 and a scraper (not shown in the figure). A first cylinder 360 is arranged on the fixed platform 350, and the telescopic end of the first cylinder 360 passes through the fixed platform 350 and is connected to the top of the mounting device 331. The scraper mounting device 331 is used to carry the scraper support shaft 332 and the scraper steering motor 334. The scraper steering motor 334 is mounted on one side of the mounting device 331. The scraper support shaft 332 is mounted on the mounting device 331 and is connected to the rotating shaft of the scraper steering motor 334. The scraper frame 333 is mounted on the scraper support shaft 332. The scraper frame 333 is driven to rotate by the scraper steering motor 334. The scraper is mounted on the scraper frame 333, so as to achieve the angle adjustment of the scraper, and then achieve the adjustment of the printing angle, and finally control the thickness and uniformity of the printed electrode 106. Among them, the scraper support shaft 332 provides support for the scraper frame 333, which can prevent the scraper steering motor 334 and the scraper frame 333 and the scraper from forming an unstable cantilever structure, which is beneficial to improving the bearing pressure of the mounting device 331 during the printing process.

[0057] In some embodiments, Figure 4 As shown, the ink return knife holder 340 includes a knife holder body and an ink return knife; the knife holder body is fixed on the fixed platform 350 through a second cylinder 370. The ink return knife is height-adjustable through the second cylinder 370, which is beneficial to adjust the uniformity of ink return and thus improve the quality of electrode preparation.

[0058] Optionally, continue to Figure 2 The first guide rail 400 has a dovetail groove structure in cross section along the first direction, and the slider 500 is provided with a concave groove matching the dovetail groove structure at the center along the second direction, and the cross section of the concave groove along the first direction is a trapezoidal structure.

[0059] In this embodiment, the first guide rail 400 is set as a dovetail groove structure to avoid the deviation of the guide rail matching point during the conformal printing steering, which affects the accuracy of the equipment's guiding operation. At the same time, the hanging installation structure can reduce the downward pressure of the guide rail part set on the working platform of the steering motor 310, which is beneficial to reducing the steering resistance during steering operation, reducing the pressure on the motor set at the bottom of the platform, and then reducing the motor resistance, which is beneficial to improving the operation control accuracy.

[0060] Alternatively, if Figure 6 As shown, the main beam 200 is a gantry structure, and second linear motors 120 are respectively arranged at the bottom ends of both sides of the main beam 200. The second linear motors 120 are slidably connected to the main beam guide rails 110, and the main beam 200 is driven by the second linear motors 120 to slide along the first direction on the main beam guide rails 110.

[0061] This embodiment adopts a main beam 200 of a gantry structure, which has a more stable structure, and the main beam 200 is driven to move by a linear motor, so the control is precise and the response speed is fast.

[0062] In some embodiments, Figure 5 As shown, the first cylinder 360 includes: a cylinder body 361 and a piston rod 362, the piston rod 362 and the cylinder body 361 are slidably matched; an electric-controlled air intake valve 363 is provided on one side of the cylinder body 361, and an electric-controlled air exhaust valve 364 is provided on the other side of the cylinder body 361, and an air pressure sensor 365 is provided on the end of the cylinder body 361 away from the piston rod 362, and the air pressure sensor 365 is located between the electric-controlled air intake valve 363 and the electric-controlled air exhaust valve 364, and is used to detect the pressure in the cylinder body 361, so as to control the extension or contraction of the piston rod 362 by controlling the opening of the electric-controlled air intake valve 363 or the electric-controlled air exhaust valve 364;

[0063] It can be understood that the second cylinder 370 has the same structure as the first cylinder 360, that is, the second cylinder 370 also includes: a cylinder body 361 and a piston rod 362, the piston rod 362 and the cylinder body 361 are slidably matched; an electrically controlled air intake valve 363 is provided on one side of the cylinder body 361, an electrically controlled air exhaust valve 364 is provided on the other side of the cylinder body 361, and an air pressure sensor 365 is provided at one end of the cylinder body 361 away from the piston rod 362, and the air pressure sensor 365 is located between the electrically controlled air intake valve 363 and the electrically controlled air exhaust valve 364. Since the second cylinder 370 has the same structure as the first cylinder 360, the drawings of the second cylinder 370 are no longer shown and explained in the embodiment of the present invention, and the structure of the first cylinder 360 can be referred to.

[0064] In this embodiment, both cylinders are equipped with an electrically controlled intake valve 363, an electrically controlled exhaust valve 364 and an air pressure sensor 365, which can monitor the pressure conditions during the printing process in real time. When the pressure is lower than the set value, the intake valve replenishes air to the cylinder cavity to increase the downward pressure; when the pressure is higher than the set value, the exhaust valve releases the pressure in the cavity to reduce the downward pressure, thereby adjusting the telescopic length of the piston rod 362 by adjusting the pressure in the cavity, and then adjusting the height of the scraper and the ink return knife, which is beneficial to improving printing uniformity.

[0065] In some embodiments, a pressure sensor is provided on the scraper. Figure 3(not shown in the figure), the pressure sensor is used to control the contact pressure between the scraper and the printing screen according to the scraper pressure obtained by the pressure sensor, which is beneficial to further improve the printing uniformity.

[0066] Optionally, the PDLC electrode conformal preparation device is also equipped with a CCD (Charge Coupled Device) camera ( Figure 2 (not shown in the figure), CCD target capture is performed, and after the target is captured, the printing and ink return path are automatically planned according to the imported printing screen path drawing.

[0067] In a second aspect, an embodiment of the present invention further provides a PDLC electrode preparation method, based on the PDLC electrode conformal preparation device in the above embodiment, such as Figure 8 As shown, a printing screen is set in the area where the PDLC electrode is to be prepared, and the printing screen includes a curved screen, and the curved screen includes a first buffer area 101, a first straight line segment 102, a curved buffer segment 103, a second straight line segment 104 and a second buffer area 105 arranged in sequence from the printing start point to the printing end point. Figure 7 As shown, the PDLC electrode preparation method includes:

[0068] S100, in the first buffer area 101, controlling the scraper steering motor 334 to rotate so that the scraper is adjusted from a non-printing angle to a printing angle.

[0069] Specifically, Fig. 9 As shown, in this area, the scraper angle will be adjusted from the non-printing angle (i.e., angle a) to the optimal printing angle (i.e., angle b), that is, it will contact the screen at a large angle and then rotate to the printing angle. Compared with the traditional scraper directly contacting the screen at a printing angle, it is more conducive to increasing the life of the screen.

[0070] S200 , printing on the first straight line segment 102 , controlling the scraper steering motor 334 to rotate so that the scraper prints along the extending direction of the first straight line segment 102 at a printing angle.

[0071] S300, when entering the arc buffer section 103 for printing, the scraper steering motor 334 is controlled to rotate so that the scraper is adjusted from the printing angle to the non-printing angle by 1~2°, and the steering motor 310 is controlled to rotate so that the scraper prints along the trajectory of the arc buffer section 103.

[0072] Specifically, Fig.10As shown, when turning in this area, the scraper pressing parameter remains unchanged, and the angle of the scraper holder 333 will be adjusted from the optimal printing angle (angle b) to the non-printing angle by 1~2° (i.e. adjusted to the position of angle c), reducing the friction between the scraper and the screen, which is more conducive to the scraper turning and improving the life of the screen. It should be noted that the adjustment of the scraper angle to the non-printing angle will affect the clarity of the printed graphic boundary to a certain extent, so the adjustment angle should not be too large, and the scraper can be turned easily without sacrificing too much printing clarity.

[0073] S400 , when entering the second straight line segment 104 for printing, the scraper steering motor 334 is controlled to rotate so that the scraper returns to the printing angle, and the steering motor 310 is controlled to rotate so that the scraper prints along the extension direction of the second straight line segment 104 .

[0074] Specifically, Fig.11 As shown, when the scraper is coming out of a bend (about to enter the second straight line segment 104 ), the scraper returns to the optimal printing angle (angle b) from the position of angle c, thereby ensuring the printing quality of the second straight line segment 104 .

[0075] S500 , in the second buffer area 105 , controlling the scraper steering motor 334 to rotate so that the scraper is adjusted to a non-printing angle.

[0076] Specifically, Fig.12 As shown, in this area, the scraper angle will be adjusted from the printing angle (angle b) to the non-printing angle (angle a), which is more conducive to increasing the life of the stencil.

[0077] In this embodiment, the arc-shaped printed electrode 106 can be obtained through the above-mentioned preparation method, and the scraper angle can be adaptively adjusted at different stages of the printing process to meet the printing requirements, which can not only improve the printing quality but also extend the life of the screen.

[0078] In another embodiment, Fig.13 As shown, the printing screen includes a straight line screen, and the straight line screen includes a third buffer area 107, a third straight line segment 108 and a fourth buffer area 109 which are sequentially arranged from the printing start point to the printing end point. Fig.14 As shown, the preparation method of the PDLC electrode includes:

[0079] S101, in the third buffer area 107, controlling the scraper steering motor 334 to rotate so that the scraper is adjusted from a non-printing angle to a printing angle.

[0080] Specifically, in this area, the scraper angle will be adjusted from the non-printing angle to the printing angle, that is, it will contact the screen at a large angle and then rotate to the printing angle. Compared with the traditional scraper directly contacting the screen at the printing angle, it is more conducive to improving the life of the screen. The angle of the scraper in this area can be referred to Fig. 9 Make adjustments.

[0081] S201 , printing on the third straight line segment 108 , controlling the scraper steering motor 334 to rotate so that the scraper prints along the extending direction of the third straight line segment 108 at a printing angle.

[0082] S301, in the fourth buffer area 109, controlling the scraper steering motor 334 to rotate so that the scraper is adjusted to a non-printing angle.

[0083] Specifically, in this area, the scraper angle will be adjusted from the printing angle to the non-printing angle, which is more conducive to improving the life of the screen. The angle of the scraper in this area can be referred to Fig.12 Make adjustments.

[0084] In this embodiment, the arc-shaped printed electrode 106 can be obtained through the above-mentioned preparation method, and the scraper angle can be adaptively adjusted at different stages of the printing process to meet the printing requirements, which can not only improve the printing quality but also extend the life of the screen.

[0085] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0086] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0087] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A PDLC electrode conformal preparation device, characterized in that: include: A base, on which two parallel and spaced main beam guide rails are arranged; A main beam spans between the two main beam guide rails and is slidably connected to the main beam guide rails, wherein the sliding direction of the main beam along the main beam guide rail is a first direction, and the main beam located between the two main beam guide rails is provided with a hollow area; A printing mechanism is installed in the hollow area of ​​the main beam and is slidably connected to the main beam, wherein the sliding direction of the printing mechanism along the main beam is a second direction, and the second direction is perpendicular to the first direction; The printing mechanism comprises a motor working platform, a steering motor, a scraper mechanism and an ink return knife frame; the upper part of the main beam is located at both sides of the hollow area and is respectively provided with first guide rails, and the upper part of the motor working platform is located at both sides of the hollow area and is respectively provided with sliders, which are slidably connected with the first guide rails through the sliders; the lower part of the main beam is located at both sides of the hollow area and is respectively provided with second guide rails, and the lower part of the motor working platform is located at both sides of the hollow area and is respectively provided with first linear motors, which are slidably connected with the second guide rails through the first linear motors; The steering motor is fixedly mounted on the motor working platform, the rotating shaft of the steering motor extends to the bottom of the motor working platform, the scraper mechanism and the ink return knife holder are connected to the rotating shaft of the steering motor through a fixed platform, and the distance from the first guide rail to the rotating shaft center of the steering motor is greater than the distance from the second guide rail on the same side to the rotating shaft center of the steering motor.

2. The PDLC electrode conformal preparation device according to claim 1, characterized in that: The distance from the first guide rail to the center of the rotation shaft of the steering motor is greater than the distance from the second guide rail on the same side to the center of the rotation shaft of the steering motor, and the difference between the two is 5mm-50mm.

3. The PDLC electrode conformal preparation device according to claim 1, characterized in that: A buffer pad is arranged between the slider and the motor working platform, the upper surface of the buffer pad is bonded to the bottom surface of the slider, and the lower surface of the buffer pad is bonded to the upper surface of the motor working platform.

4. The PDLC electrode conformal preparation device according to claim 1, characterized in that: The scraper mechanism comprises: a scraper support shaft, a scraper steering motor, a mounting device, a scraper frame and a scraper; A first cylinder is provided on the fixed platform, the telescopic end of the first cylinder passes through the fixed platform and is connected to the top of the mounting device, the scraper steering motor is installed on one side of the mounting device, the scraper support shaft is installed on the mounting device and is transmission-connected to the rotating shaft of the scraper steering motor, the scraper frame is installed on the scraper support shaft, the scraper is installed on the scraper frame, and the scraper steering motor is used to drive the scraper frame to rotate so as to adjust the angle of the scraper.

5. The PDLC electrode conformal preparation device according to claim 4, characterized in that: The ink return tool holder comprises a tool holder body and an ink return tool; the tool holder body is fixed on the fixed platform via a second cylinder.

6. The PDLC electrode conformal preparation device according to claim 1, characterized in that: The cross section of the first guide rail along the first direction is a dovetail groove structure, the center of the sliding block along the second direction is provided with a concave groove matching the dovetail groove structure, and the cross section of the concave groove along the first direction is a trapezoidal structure.

7. The PDLC electrode conformal preparation device according to claim 1, characterized in that: The main beam is a gantry structure, and second linear motors are respectively arranged at the bottom ends of both sides of the main beam. The second linear motors are slidably connected to the main beam guide rails, and the main beam is driven to slide along the main beam guide rails along the first direction by the second linear motors.

8. The PDLC electrode conformal preparation device according to claim 5, characterized in that: The first cylinder comprises: a cylinder body and a piston rod, wherein the piston rod is slidably matched with the cylinder body; an electrically controlled air intake valve is arranged on one side of the cylinder body, and an electrically controlled air exhaust valve is arranged on the other side of the cylinder body; an air pressure sensor is arranged on one end of the cylinder body away from the piston rod, and the air pressure sensor is located between the electrically controlled air intake valve and the electrically controlled air exhaust valve, and is used to detect the pressure in the cylinder body, so as to control the extension or contraction of the piston rod by controlling the opening of the electrically controlled air intake valve or the electrically controlled air exhaust valve; The second cylinder has the same structure as the first cylinder.

9. The PDLC electrode conformal preparation device according to claim 4, characterized in that: The scraper is provided with a pressure sensor for controlling the printing uniformity of the scraper according to the scraper pressure acquired by the pressure sensor.

10. A method for preparing a PDLC electrode, based on the PDLC electrode conformal preparation device according to claim 5, wherein a printing screen is arranged in an area where the PDLC electrode is to be prepared, wherein the printing screen comprises an arc-shaped screen, and the arc-shaped screen comprises a first buffer area, a first straight line segment, an arc-shaped buffer segment, a second straight line segment, and a second buffer area arranged in sequence from a printing start point to a printing end point, wherein: The PDLC electrode preparation method comprises: In the first buffer area, the scraper steering motor is controlled to rotate so that the scraper is adjusted from a non-printing angle to a printing angle; When printing the first straight line segment, controlling the scraper steering motor so that the scraper prints along the extension direction of the first straight line segment at a printing angle; When entering the arc-shaped buffer section for printing, the scraper steering motor is controlled to rotate so that the scraper is adjusted from the printing angle to the non-printing angle by 1-2°, and the steering motor is controlled to rotate so that the scraper prints along the trajectory of the arc-shaped buffer section; When entering the second straight line segment for printing, the scraper steering motor is controlled to rotate so that the scraper returns to the printing angle, and the steering motor is controlled to rotate so that the scraper prints along the extension direction of the second straight line segment; In the second buffer area, the scraper steering motor is controlled to rotate so that the scraper is adjusted to a non-printing angle.

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