Polymer dispersed liquid crystal (PDLC) film dispensing equipment

Abstract

The PDLC film dispensing equipment comprises a machine base, a motion platform mechanism is connected to the machine base, the motion platform mechanism comprises an adsorption platform installed on the machine base, and front-back moving modules are installed on the portions, on the left side and the right side of the adsorption platform, of the machine base correspondingly; the front-back moving module drives the two independent portal frames above to move in the front-back direction, the portal frames are connected with the left-right moving module, the left-right moving module is connected with the lifting module and drives the lifting module to move in the left-right direction, and the lifting module drives the dispensing mechanism to move up and down. The production efficiency and the precision can be improved.

Description

Technical Field

[0001] The invention relates to PDLC film dispensing equipment. Background Art

[0002] Polymer Dispersed Liquid Crystal (PDLC) is an emerging optoelectronic thin film material. Due to the optical anisotropy and dielectric anisotropy of liquid crystal molecules, PDLC becomes a composite material with electro-optical response characteristics. It has a wide range of applications in architectural glass, car sunroofs, electronic displays and other fields. Its core structure usually includes two transparent PET layers, an ITO conductive layer and a liquid crystal layer in the middle. The PDLC film needs to be filled with epoxy resin glue on the outer edge of one side of the PET for edge sealing, and the glue is cured by high-temperature baking to achieve the purpose of sealing the edge of the PET film (i.e., edge sealing process). This process puts forward three core requirements for the dispensing process:

[0003] Shape: The glue needs to be in effective contact with the PET layer to form a T-shaped structure with no gaps in the side walls.

[0004] Height: The glue needs to be slightly higher than the surface of the PET layer, with an overflow height of 0.1 to 0.3 mm;

[0005] Appearance: The glue should be continuous and full, without any faults, gaps, bubbles or uneven width in the middle.

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

[0007] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a new type of PDLC film dispensing equipment to make it more valuable for industrial use. Summary of the Invention

[0008] In order to solve the above technical problems, the purpose of the present invention is to provide a PDLC film dispensing device.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] The PDLC film dispensing device includes a machine base, and a motion platform mechanism is connected to the machine base.

[0011] The motion platform mechanism includes an adsorption platform installed on a machine base, and a forward and backward moving module is installed on the machine bases on the left and right sides of the adsorption platform. The forward and backward moving modules drive two independent gantries above to move in the forward and backward directions. The gantries are connected to left and right moving modules, and the left and right moving modules are connected to lifting modules and drive the lifting modules to move in the left and right directions. The lifting modules drive the dispensing mechanism to move up and down;

[0012] The dispensing mechanism includes a dispensing fixing plate, which is connected to the lifting module, a rubber hose connected to the dispensing fixing plate, and the rubber hose is connected to the dispensing valve through a connecting pipe. The dispensing fixing plate is connected to a Luer connector through a Luer connector fixing block, the upper end of the Luer connector is connected to the discharge end of the dispensing valve, the lower end of the Luer connector fixing block is connected to a dispensing needle through a needle fixing block, and the dispensing needle is connected to the lower end of the Luer connector, a rotating 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 driving shaft of the rotating cylinder.

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

[0014] Preferably, in the PDLC film dispensing equipment, a high-magnification lens is connected to the dispensing fixed plate, an illumination light source is connected to the dispensing fixed plate located below the magnification lens, a glue quantity sensor for detecting the remaining amount in the hose is connected to the dispensing fixed plate, and a laser altimeter is connected to the dispensing fixed plate opposite to the high-magnification lens.

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

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

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

[0018] Preferably, in the PDLC film dispensing device, a needle sensor for calibrating the dispensing needle before the device is operated and a precision scale for testing the dispensing accuracy of the dispensing valve are connected to the opening on one side of the adsorption platform.

[0019] By means of the above solution, the present invention has at least the following advantages:

[0020] 1. This invention utilizes a dual-drive, dual-gantry structure, resulting in a compact design and minimal footprint. The Z-axis, combined with the dual-drive gantry and dispensing module, enables dispensing of large-format, complex trajectory patterns. The dual-gantry structure also allows for simultaneous processing, significantly improving processing efficiency.

[0021] 2. The present invention is equipped with a CCD camera with edge patrol and target capture functions. For products with special-shaped trajectories or no target recognition, the camera will patrol and capture the edge of the material according to the approximate trajectory of the drawing before processing. The outer contour of the material is captured by vision and an actual trajectory map is generated. During the dispensing process, the processing will be carried out according to the actual generated drawing. This method can effectively improve the accuracy of dispensing.

[0022] 3. The present invention has a compact structure, small equipment footprint, large processing size, is compatible with graphics processing of multiple trajectories, has low cost and high efficiency.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 yes Figure 2 A structural diagram from another perspective;

[0028] Figure 4 This is a schematic structural diagram of the dispensing mechanism of the present invention.

[0029] Figure 5 yes Figure 4 Exploded diagram;

[0030] Figure 6 This is an exploded view of the dispensing valve of the present invention

[0031] Figure 7 It is a structural schematic diagram of the needle cleaning component, the needle sensor and the precision scale of the present invention. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0034] Example

[0035] like Figure 1 、 Figure 2 and Figure 3 As shown, a PDLC film dispensing equipment has an outer dimension of 3690*3050*2010mm, including a machine base 1, a moving platform mechanism 2 is connected to the machine base 1, and the moving platform mechanism 2 includes an adsorption platform 3 installed on the machine base 1, and a forward and backward moving module 4 is installed on the machine base 1 on the left and right sides of the adsorption platform 3. The forward and backward moving module 4 drives two independent gantries 5 above to move in the forward and backward directions, and a left and right moving module 6 is connected to the gantry 5. The left and right moving module 6 is connected to a lifting module 8 and drives the lifting module 8 to move in the left and right directions. The lifting module 8 drives the dispensing mechanism 7 to move up and down, and an outer cover 9 is installed on the machine base 1, and a boom control box 10 is externally connected to the outer cover 9.

[0036] Among them, the adsorption platform 3 is connected to the machine base through the side lock fixing plate and the M16 bolts passing through the frame and the polyurethane vibration isolation pad and the marble base; the outer cover is connected to the machine base through bolts.

[0037] The opening on the adsorption platform 3 described in the present invention is connected to a waste collection box to facilitate the collection of waste. At the same time, the adsorption platform 3 is a porous adsorption aluminum plate, which is mainly used for the adsorption and fixation of products. It is connected to the base by bolts and has certain plane accuracy requirements. The accuracy requirements can be confirmed by skilled technicians and are parameters set by skilled technicians themselves.

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

[0039] like Figure 4 , Figure 5 and Figure 6 As shown, further, precise dispensing can be achieved, and the dispensing mechanism 7 is a terminal processing device. The equipment has two processing stations, and the control system is used to achieve bidirectional dispensing of the PDLC film. The dispensing mechanism 7 includes a dispensing fixed plate 71, which is connected to the lifting module 8. The dispensing fixed plate 71 is connected to a hose 72, and the hose 72 is connected to the dispensing valve 73 through a connecting pipe. The dispensing fixed plate 71 is connected to a Luer connector 74 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. The two ends are connected, and the dispensing fixing plate 71 is connected to a rotating cylinder 75, and the driving shaft of the rotating cylinder 75 is connected to a Luer joint rotating fixing block 76 that drives the Luer joint 74 to rotate; the dispensing fixing plate 71 is also connected to a high-power lens 79, and the dispensing fixing plate 71 located below the high-power lens 79 is connected to an illumination light source 710, and the dispensing fixing plate 71 is connected to a glue amount sensor 711 for detecting the remaining amount of the hose, and the dispensing fixing plate 71 opposite to the high-power lens 79 is connected to a laser altimeter 712.

[0040] During the working process, the dispensing valve used in conjunction with the constant pressure controller controls the uniform flow of epoxy resin glue in the hose to realize the dispensing function. A cut-off device is provided between the dispensing valve and the dispensing needle, including a rotary cylinder, a Luer joint rotating fixed block, a Luer joint, and a Luer joint fixed block. When the dispensing is cut off at the end of the work, the rotary cylinder rotates the Luer joint to cut off the passage, and the epoxy resin glue cannot flow down. At the same time, the high-precision dispensing process requires precise visual coordination (i.e. high-magnification lens). The high-magnification lens and the lighting light source cooperate with the motion control system to capture the uploaded image in real time. For products with special-shaped trajectories or no target recognition, the edge can be patrolled and the target can be captured. The height of the dispensing head and the material surface can be measured with the laser altimeter and compensated, so that the dispensing head can maintain a certain height movement throughout the entire process, effectively improving the accuracy of dispensing.

[0041] like Figure 7 As shown, further, in order to clean the dispensing needle and ensure that the dispensing is clean, a needle cleaning component 11 is connected to the opening on one side of the adsorption platform 3, and the needle cleaning component 11 includes a needle cleaning substrate 111 installed on the adsorption platform 21, and the left and right sides of the needle cleaning substrate 111 are respectively connected to a reel 112 and a reel 113, and a plurality of guide rollers 114 are installed on the needle cleaning substrate 111 between the reel 112 and the reel 113, and a speed regulating motor 115 is connected to the needle cleaning substrate 111, and the driving shaft of the speed regulating motor 115 is connected to the driving wheel, and the rotating shaft of the reel 113 is connected to a driven wheel, and the driving wheel and the driven wheel are connected by a belt drive, and the cleaning structure 116 wound on the reel 112 and the reel 113 is connected together through a plurality of guide rollers 114.

[0042] At the same time, in order to achieve the accuracy of dispensing by cooperating with a larger needle sensor and a precision scale, the opening on one side of the adsorption platform 3 is connected with a larger needle sensor 12 for calibrating the dispensing needle before the equipment is operated and a precision scale 13 for testing the dispensing accuracy of the dispensing valve.

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

[0044] The base assembly integrates the gas circuit, circuit and control unit, and is composed of electric control cabinet I, electric control cabinet II and boom control box. Electric control cabinets I and II are equipped with electric control panels inside, which serve as attachment plates for electrical components. There are also cooling fans to assist in heat dissipation, providing a safe and favorable working environment for the control module. The base is a frame that serves as a load-bearing component and is welded from 100*100*5mm square tubes. Six anchors are installed at the bottom to support the overall weight. In addition, the base is also equipped with an industrial computer, solenoid valves and three-way fittings to rationally utilize space and increase space utilization. The components involved in the above-mentioned base are all existing technologies known to those skilled in the art.

[0045] The working principle of the present invention is as follows:

[0046] During specific work, a laser altimeter is used to measure the height between the dispensing head and the material surface and the compensation is entered into the processing software. The three-axis linkage motion platform is used to make 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 discharged with a fixed air pressure, so that the glue is evenly and consistently applied to the grooves or edges of the PDLC film. At the same time, the equipment adopts a double gantry structure. The two gantries process simultaneously and cooperate with each other to achieve large-scale, high-precision and high-efficiency processing requirements.

[0047] The equipment is equipped with CCD camera edge patrol and target grabbing functions. For products with special-shaped trajectories or no target recognition, the camera will patrol and grab the target along the edge of the material according to the approximate trajectory of the drawing before processing. The outer contour of the material is captured by vision and the actual trajectory map is generated. During dispensing processing, the processing will be carried out according to the actual generated drawing.

[0048] This invention utilizes a dual-drive, dual-gantry structure, resulting in a compact design and minimal footprint. The Z-axis, combined with the dual-drive gantry and dispensing module, enables dispensing of large-format, complex trajectory patterns. The dual-gantry structure also allows for simultaneous processing, significantly improving processing efficiency.

[0049] Equipped with CCD camera edge patrol and target grabbing functions, for products with special-shaped trajectories or no target recognition, the camera will patrol and grab the target along the edge of the material according to the approximate trajectory of the drawing before processing. The outer contour of the material is captured by vision and the actual trajectory map is generated. During dispensing, the processing will be carried out according to the actual generated drawing. This method can effectively improve the accuracy of dispensing.

[0050] The equipment has a compact structure, occupies a small area, can process large sizes, is compatible with graphic processing of multiple trajectories, has low cost and high efficiency.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0052] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only 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] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A PDLC film dispensing device, comprising a base (1), wherein a motion platform mechanism (2) is connected to the base (1), and characterized in that: The motion platform mechanism (2) includes an adsorption platform (3) mounted on a machine base (1), and forward and backward moving modules (4) are mounted on the machine bases (1) on the left and right sides of the adsorption platform (3). The forward and backward moving modules (4) drive two independent gantries (5) above to move in the forward and backward directions. The gantries (5) are connected to left and right moving modules (6). The left and right moving modules (6) are connected to lifting modules (8) and drive the lifting modules (8) to move in the left and right directions. The lifting modules (8) drive the dispensing mechanism (7) to move up and down. The dispensing mechanism (7) comprises a dispensing fixing plate (71), the dispensing fixing plate (71) being connected to the lifting module (8), the dispensing fixing plate (71) being connected to a rubber hose (72), the rubber hose (72) being connected to a dispensing valve (73) via a connecting pipe, the dispensing fixing plate (71) being connected to a Luer connector (74) via a Luer connector fixing block (77), the upper end of the Luer connector (74) being connected to a dispensing needle via a needle fixing block (78), the dispensing needle being connected to the lower end of the Luer connector (74), the dispensing fixing plate (71) being connected to a rotating cylinder (75), the driving shaft of the rotating cylinder (75) being connected to a Luer connector rotating fixing block (76) for driving the Luer connector (74) to rotate.

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

3. The PDLC film dispensing device according to claim 1, characterized in that: The dispensing fixing plate (71) is connected to a high-power lens (79), the dispensing fixing plate (71) located below the high-power lens (79) is connected to an illumination light source (710), the dispensing fixing plate (71) is connected to a glue quantity sensor (711) for detecting the remaining amount of the glue hose, and the dispensing fixing plate (71) opposite to the high-power lens (79) is connected to a laser altimeter (712).

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

5. The PDLC film dispensing device according to claim 1, characterized in that: A needle cleaning assembly (11) is connected to an opening on one side of the adsorption platform (3). The needle cleaning assembly (111) comprises a needle cleaning substrate (111) mounted on the adsorption platform (21). A reel (112) and a reel (113) are connected to the left and right sides of the needle cleaning substrate (111) respectively. A plurality of guide rollers (114) are mounted on the needle cleaning substrate (111) between the reel (112) and the reel (113). A speed regulating motor (115) is connected to the needle cleaning substrate (111). The driving shaft of the speed regulating motor (115) is connected to the driving wheel. A driven wheel is connected to the rotating shaft of the reel (113). The driving wheel and the driven wheel are connected via a belt transmission. The cleaning structure (116) reeled on the reel (112) and the reel (113) is connected together via a plurality of guide rollers (114).

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

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

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