PDLC film dispensing apparatus

Abstract

The utility model relates to a kind of PDLC film dispensing equipment, including base, motion platform mechanism is connected on the base, the motion platform mechanism includes adsorption platform installed on base, adsorption platform left and right sides on the base are all installed with front and back moving module, the front and back moving module drives two independent portal frame above moves in front and back direction, left and right moving module is connected on the portal frame, left and right moving module is connected with lifting module and drives lifting module moves in left and right direction, the lifting module drives dispensing mechanism moves up and down.The utility model can improve production efficiency and improve accuracy.

Description

Technical Field

[0001] This utility model relates to a PDLC film dispensing device. Background Technology

[0002] Polymer Dispersed Liquid Crystal (PDLC) is an emerging optoelectronic thin film material. Due to the optical and dielectric anisotropy of liquid crystal molecules, PDLC is a composite material with electro-optical response characteristics. It has wide applications in architectural glass, automotive sunroofs, and electronic displays. Its core structure typically consists of two transparent PET layers, an ITO conductive layer, and a liquid crystal layer in between. PDLC films require sealing the outer edge of one PET layer with epoxy resin adhesive, followed by high-temperature baking to cure the adhesive and seal the PET film edge (i.e., edge sealing). This process places three core requirements on the dispensing process:

[0003] Form: The adhesive needs to make effective contact with the PET layer to form a T-shaped structure, and there should be no gaps on the sidewalls.

[0004] Height: The adhesive needs to extend slightly above the PET layer surface, with an overflow height of 0.1–0.3 mm.

[0005] Appearance: The glue should be continuous and full, without any breaks, gaps, air bubbles, or uneven widths.

[0006] However, existing dispensing equipment currently suffers from problems such as small processing area, low production efficiency, and low processing accuracy.

[0007] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of PDLC film dispensing equipment with greater industrial application value. Utility Model Content

[0008] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a PDLC film dispensing device.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] PDLC film dispensing equipment includes a base, on which a motion platform mechanism is connected.

[0011] The motion platform mechanism includes an adsorption platform mounted on a base. A front-to-back moving module is mounted on the base on both the left and right sides of the adsorption platform. The front-to-back moving module drives two independent gantry frames above to move in the front-to-back direction. A left-to-right moving module is connected to the gantry frames. A lifting module is connected to the left-to-right moving module and drives the lifting module to move in the left-to-right direction. The lifting module drives the dispensing mechanism to move up and down.

[0012] The dispensing mechanism includes a dispensing fixing plate connected to a lifting module. A glue tube is connected to the dispensing fixing plate and connected to a dispensing valve via a connecting pipe. A Luer connector is connected to the dispensing fixing plate via a Luer connector fixing block. The upper end of the Luer connector is connected to the discharge end of the dispensing valve. A dispensing needle is connected to the lower end of the Luer connector fixing block via a needle fixing block. The dispensing needle is connected to the lower end of the Luer connector. A rotary cylinder is connected to the dispensing fixing plate, and a Luer connector rotating fixing block that drives the Luer connector to rotate is connected to the drive shaft of the rotary cylinder.

[0013] Preferably, in the PDLC film dispensing equipment, an outer cover is installed on the base, and a boom control box is externally connected to the outer cover.

[0014] Preferably, in the PDLC film dispensing equipment, a high-magnification lens is connected to the dispensing fixing plate, an illumination source is connected to the dispensing fixing plate located below the lens, a glue volume sensor for detecting the remaining glue tube is connected to the dispensing fixing plate, and a laser height meter is connected to the dispensing fixing plate opposite to the high-magnification lens.

[0015] Preferably, in the PDLC film dispensing equipment, the adsorption platform is a porous aluminum plate.

[0016] Preferably, in the PDLC film dispensing equipment, a needle cleaning assembly is connected to an opening on one side of the adsorption platform. The needle cleaning assembly includes a needle cleaning substrate mounted on the adsorption platform. An unwinding roller and a winding roller are respectively connected to the left and right sides of the needle cleaning substrate. A plurality of guide rollers are installed on the needle cleaning substrate between the unwinding roller and the winding roller. A speed-regulating motor is connected to the needle cleaning substrate. The drive shaft of the speed-regulating motor is connected to a driving wheel. A driven wheel is connected to the shaft of the winding roller. The driving wheel and the driven wheel are connected by a belt drive. The cleaning structure wound on the unwinding roller and the winding roller is connected together by a plurality of guide rollers.

[0017] Preferably, in the PDLC film dispensing equipment, the cleaning structure is a lint-free cloth.

[0018] Preferably, in the PDLC film dispensing equipment, the adsorption platform has an opening connected to a needle sensor for calibrating the dispensing needle before operation and a precision scale for testing the dispensing accuracy of the dispensing valve.

[0019] By means of the above solution, this utility model has at least the following advantages:

[0020] 1. This utility model adopts a dual-drive, dual-gantry structure, which is compact and occupies a small area. This utility model uses a Z-axis in conjunction with a dual-drive gantry and a dispensing module to achieve dispensing processing of large-format, complex trajectory patterns. Simultaneously, the dual-gantry structure allows the two gantry units to work together, greatly improving processing efficiency.

[0021] 2. This utility model is equipped with a CCD camera for edge tracking and target capture. For products with irregular trajectories or no target recognition, the camera tracks the material edge and captures the target according to the approximate trajectory of the drawing before processing. It captures the outer contour of the material visually and generates an actual trajectory map. During dispensing, the processing is carried out according to the actual generated drawing. This method can effectively improve the accuracy of dispensing.

[0022] 3. This utility model has a compact structure, small footprint, large processing size, compatibility with multiple trajectory graphic processing, low cost, and high efficiency.

[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0027] Figure 3 yes Figure 2 Another structural diagram from a different perspective;

[0028] Figure 4 This is a schematic diagram of the dispensing mechanism of this utility model.

[0029] Figure 5 yes Figure 4 Exploded view;

[0030] Figure 6 This is an exploded view of the dispensing valve of this utility model.

[0031] Figure 7 This is a schematic diagram of the needle cleaning assembly, needle sensor, and precision scale of this utility model. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] Example

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, a PDLC film dispensing device with external dimensions of 3690*3050*2010mm includes a base 1, on which a motion platform mechanism 2 is connected. The motion platform mechanism 2 includes an adsorption platform 3 mounted on the base 1. Front-back moving modules 4 are mounted on the base 1 on both the left and right sides of the adsorption platform 3. The front-back moving modules 4 drive two independent gantry frames 5 above to move in the front-back direction. Left-right moving modules 6 are connected to the gantry frames 5. The left-right moving modules 6 are connected to lifting modules 8 and drive lifting modules 8 to move in the left-right direction. The lifting modules 8 drive dispensing mechanism 7 to move up and down. An outer cover 9 is mounted on the base 1, and a boom control box 10 is externally connected to the outer cover 9.

[0036] The adsorption platform 3 is connected to the base via a side-locking fixing plate and M16 bolts passing through the frame and polyurethane vibration isolation pads; the outer cover is connected to the base via bolts.

[0037] The adsorption platform 3 described in this utility model has an opening connected to a waste collection box for easy collection of waste. The adsorption platform 3 is a porous aluminum plate, mainly for adsorption and fixation of products. It is connected to the base by bolts and has certain requirements for planar accuracy. These accuracy requirements can be confirmed by the technical personnel and are parameters set by the technical personnel themselves.

[0038] Among them, the motion platform mechanism 2 is a typical dual-drive gantry structure. The dual Y-axis and dual X-axis are driven by linear motors, and the Z-axis is driven by a servo motor. The overall X-axis crossbeam is connected to the dual Y-axis slide plate by bolts, so that the X-axis moves with the Y-axis. Finally, the control unit of the boom control box is precisely controlled to achieve the precise movement of the dispensing component, thereby realizing the function of precise dispensing of epoxy resin.

[0039] like Figure 4 , Figure 5 and Figure 6 As shown, furthermore, precise dispensing can be achieved. The dispensing mechanism 7 is an end-processing device with two processing stations. A control system enables bidirectional dispensing of the PDLC film. The dispensing mechanism 7 includes a dispensing fixing plate 71 connected to a lifting module 8. A glue tube 72 is connected to the dispensing fixing plate 71, and the glue tube 72 is connected to a dispensing valve 73 via a connecting pipe. A Luer connector 74 is connected to the dispensing fixing plate 71 via a Luer connector fixing block 77. The upper end of the Luer connector 74 is connected to the discharge end of the dispensing valve 73. The lower end of the Luer connector fixing block 77 is connected to a dispensing needle via a needle fixing block 78. The dispensing needle is connected to the lower end of the Luer connector 74. The ends are connected. A rotary cylinder 75 is connected to the dispensing fixing plate 71. A Luer connector rotating fixing block 76 that drives the Luer connector 74 to rotate is connected to the drive shaft of the rotary cylinder 75. A high-magnification lens 79 is also connected to the dispensing fixing plate 71. An illumination source 710 is connected to the dispensing fixing plate 71 located below the high-magnification lens 79. A glue volume sensor 711 for detecting the glue tube balance is connected to the dispensing fixing plate 71. A laser height meter 712 is connected to the dispensing fixing plate 71 opposite to the high-magnification lens 79.

[0040] During operation, a dispensing valve, used in conjunction with a constant pressure controller, controls the uniform flow of epoxy resin adhesive from the dispensing tube to achieve the dispensing function. A shut-off device, including a rotary cylinder, a Luer connector rotation and fixing block, a Luer connector, and a Luer connector fixing block, is located between the dispensing valve and the dispensing needle. When dispensing ends, the rotary cylinder rotates to cut off the Luer connector, preventing further flow of epoxy resin adhesive. Simultaneously, high-precision dispensing requires precise vision coordination (i.e., a high-magnification lens). The high-magnification lens, along with the illumination source and a motion control system, captures and uploads images in real time. For products with irregular trajectories or without target recognition, edge-tracking and target acquisition can be performed. A laser height gauge is used to measure and compensate for the height difference between the dispensing head and the material surface, ensuring the dispensing head maintains a consistent height throughout the process, effectively improving dispensing accuracy.

[0041] like Figure 7 As shown, further, the dispensing needles are cleaned to ensure cleanliness during dispensing. A needle cleaning assembly 11 is connected to the opening on one side of the adsorption platform 3. The needle cleaning assembly 11 includes a needle cleaning base plate 111 mounted on the adsorption platform 21. An unwinding roller 112 and a take-up roller 113 are connected to the left and right sides of the needle cleaning base plate 111, respectively. Several guide rollers 114 are installed on the needle cleaning base plate 111 between the unwinding roller 112 and the take-up roller 113. A speed-regulating motor 115 is connected to the needle cleaning base plate 111. The drive shaft of the speed-regulating motor 115 is connected to the driving wheel. A driven wheel is connected to the rotating shaft of the take-up roller 113. The driving wheel and the driven wheel are connected by a belt drive. The cleaning structure 116 wound on the unwinding roller 112 and the take-up roller 113 is connected together by several guide rollers 114.

[0042] Meanwhile, in conjunction with a needle sensor and a precision scale to achieve dispensing accuracy, the adsorption platform 3 is connected to a needle sensor 12 for calibrating the dispensing needle before the equipment is run and a precision scale 13 for testing the dispensing accuracy of the dispensing valve at one side opening.

[0043] The cleaning structure 116 is a dust-free cloth.

[0044] The base assembly integrates pneumatic, electrical, and control systems, and consists of electrical control cabinet I, electrical control cabinet II, and a boom control box. Electrical control cabinets I and II house the electrical control panel, serving as mounting plates for electrical components, and are equipped with cooling fans to provide a safe and favorable working environment for the control modules. The base, a frame serving as the load-bearing component, is welded from 100*100*5mm square tubing, with six feet at the bottom to support the overall weight. In addition, the base also houses an industrial computer, solenoid valves, and a triplet assembly to optimize space utilization. All components mentioned above in the base are existing technologies known to those skilled in the art.

[0045] The working principle of this utility model is as follows:

[0046] In actual operation, the height of the dispensing head above the material surface is measured by a laser height gauge and compensated into the processing software. A three-axis linkage motion platform makes the dispensing head move at a certain height according to the trajectory of the drawing. At the same time, a constant pressure controller controls the amount of glue dispensed with a fixed air pressure, so that the glue is evenly and consistently applied to the grooves or edges of the PDLC film. The equipment adopts a double gantry structure, with the two gantry processing simultaneously and cooperating with each other to achieve the processing requirements of high precision and high efficiency for large-format applications.

[0047] The equipment is equipped with a CCD camera for edge tracking and target capture. For products with irregular trajectories or no target recognition, the camera tracks the material edge and captures the target according to the approximate trajectory of the drawing before processing. It visually captures the outer contour of the material and generates an actual trajectory map. During dispensing, the equipment will be processed according to the actual generated drawing.

[0048] This invention employs a dual-drive, dual-gantry structure, resulting in a compact design and small footprint. It utilizes a Z-axis in conjunction with dual-drive gantry units and a dispensing module to achieve dispensing processing of large-format, complex trajectory patterns. The dual-gantry structure allows the two gantry units to work together simultaneously, significantly improving processing efficiency.

[0049] Equipped with a CCD camera for edge tracking and target acquisition, for products with irregular trajectories or no target recognition, the camera tracks the material edge and captures the target according to the approximate trajectory of the drawing before processing. It visually captures the outer contour of the material and generates an actual trajectory map. During dispensing, the processing is carried out according to the actual generated drawing. This method can effectively improve the accuracy of dispensing.

[0050] The equipment has a compact structure, small footprint, large processing size, compatibility with multiple trajectory graphic processing, low cost, and high efficiency.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0054] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A PDLC film dispensing device, comprising a base (1), wherein a motion platform mechanism (2) is connected to the base (1), characterized in that: The motion platform mechanism (2) includes an adsorption platform (3) installed on a base (1). A front-to-back moving module (4) is installed on the base (1) on both the left and right sides of the adsorption platform (3). The front-to-back moving module (4) drives two independent gantry frames (5) above to move in the front-to-back direction. A left-to-right moving module (6) is connected to the gantry frame (5). A lifting module (8) is connected to the left-to-right moving module (6) and drives the lifting module (8) to move in the left-to-right direction. The lifting module (8) drives the dispensing mechanism (7) to move up and down. The dispensing mechanism (7) includes a dispensing fixing plate (71), which is connected to the lifting module (8). A glue tube (72) is connected to the dispensing fixing plate (71), and the glue tube (72) is connected to the dispensing valve (73) through a connecting pipe. A Luer connector (74) is connected to the dispensing fixing plate (71) through a Luer connector fixing block (77). The upper end of the Luer connector (74) is connected to the discharge end of the dispensing valve (73). The lower end of the Luer connector fixing block (77) is connected to a dispensing needle through a needle fixing block (78). The dispensing needle is connected to the lower end of the Luer connector (74). A rotary cylinder (75) is connected to the dispensing fixing plate (71). A Luer connector rotating fixing block (76) that drives the Luer connector (74) to rotate is connected to the drive shaft of the rotary cylinder (75).

2. The PDLC film dispensing equipment according to claim 1, characterized in that: An outer cover (9) is installed on the base (1), and a boom control box (10) is connected to the outer cover (9).

3. The PDLC film dispensing equipment according to claim 1, characterized in that: A high-magnification lens (79) is connected to the dispensing fixing plate (71). An illumination source (710) is connected to the dispensing fixing plate (71) located below the lens (79). A glue volume sensor (711) for detecting the remaining glue tube is connected to the dispensing fixing plate (71). A laser height meter (712) is connected to the dispensing fixing plate (71) opposite to the high-magnification lens (79).

4. The PDLC film dispensing equipment according to claim 1, characterized in that: The adsorption platform (3) is a porous aluminum plate.

5. The PDLC film dispensing equipment according to claim 1, characterized in that: A needle cleaning assembly (11) is connected to the opening on one side of the adsorption platform (3). The needle cleaning assembly (11) includes a needle cleaning base plate (111) mounted on the adsorption platform (21). An unwinding roller (112) and a winding roller (113) are connected to the left and right sides of the needle cleaning base plate (111), respectively. Several guide rollers (114) are installed on the needle cleaning base plate (111) between the unwinding roller (112) and the winding roller (113). A speed-regulating motor (115) is connected to the needle cleaning base plate (111). The drive shaft of the speed-regulating motor (115) is connected to the drive wheel. A driven wheel is connected to the shaft of the winding roller (113). The drive wheel and the driven wheel are connected by a belt drive. The cleaning structure (116) wound on the unwinding roller (112) and the winding roller (113) is connected together by several guide rollers (114).

6. The PDLC film dispensing equipment according to claim 5, characterized in that: The cleaning structure (116) is a lint-free cloth.

7. The PDLC film dispensing equipment according to claim 1, characterized in that: The adsorption platform (3) has a needle sensor (12) connected to one side opening for calibrating the dispensing needle before the equipment is run, and a precision scale (13) for testing the dispensing accuracy of the dispensing valve.

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