Light guide printing device

Abstract

The utility model discloses a light guide printing device, which belongs to the technical field of light guide printing. It includes a frame, a screen printing machine and a fan bracket arranged on the frame; the front end of the screen printing machine is provided with a raw material unwinding roller, a film tearing winding roller and a plurality of flattening rollers, and the rear end of the screen printing machine is provided with a finished product winding roller; wherein the fan bracket is suspended above the flattening roller, and the printing material on the raw material unwinding roller is flattened on the surface of the working platform of the screen printing machine after bypassing a plurality of flattening rollers, and the protective film on the printing material is separated from the printing material from the front end of the working platform, and is connected to the film tearing winding roller after bypassing the fan bracket; the fan bracket is provided with an ion fan suspended above the protective film and facing the working platform; the light guide printing device of the utility model can avoid the influence of static electricity on the printed water glue and improve the quality of light guide printing.

Description

Technical Field

[0001] The utility model belongs to the technical field of light guide sheet printing, and in particular relates to a light guide sheet printing device. Background Art

[0002] Light guide printing is a technology with important applications in the field of optics. With the continuous development of material science and printing technology, new materials and more advanced printing processes are gradually introduced into the production of light guides.

[0003] In the prior art, water glue is usually printed on the surface of the light guide during the printing process. The printed water glue can bond the light guide with other optical components (such as reflective sheets, shading sheets, etc.) to form a complete backlight module. At the same time, the printed water glue usually has high light transmittance, which can reduce the refraction and scattering of light and improve the light transmission efficiency.

[0004] However, in the process of printing water glue, the existing printing equipment is prone to cause glue spots to form on the surface of the light guide due to static electricity on the printing material, thereby affecting the printing effect of the light guide. Therefore, there is an urgent need for a light guide printing device that can reduce the accumulation of charges on the surface of the printing material. Utility Model Content

[0005] The utility model aims to overcome the deficiencies in the prior art and provide a light guide printing device, which can avoid the influence of static electricity on printed water glue and improve the quality of light guide printing.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a light guide printing device, comprising a frame and a screen printer and a fan bracket arranged on the frame;

[0007] The front end of the screen printing machine is provided with a raw material unwinding roller, a film tearing winding roller and a plurality of flattening rollers, and the rear end of the screen printing machine is provided with a finished product winding roller;

[0008] The fan bracket is suspended above the flattening roller, and the printing material on the material unwinding roller passes through a plurality of groups of the flattening rollers and is flattened on the working platform surface of the screen printing machine. The protective film on the printing material is separated from the printing material from the front end of the working platform, and passes through the fan bracket and is connected to the film tearing and winding roller;

[0009] The fan bracket is provided with an ion fan suspended above the protective film and facing the working platform.

[0010] Optionally, the moving speed and frequency of the protective film relative to the fan bracket are equal to the moving speed and frequency of the printing material relative to the working platform.

[0011] Optionally, an electrostatic rope is provided at the feeding front end of the screen printing machine.

[0012] Optionally, a windshield cloth for blocking ion wind from entering the interior of the screen printing machine is provided at the feeding front end of the screen printing machine.

[0013] Optionally, the ion blower is hinged on the blower bracket, and the blower bracket is provided with an adjusting screw capable of locking the position of the ion blower.

[0014] Optionally, a support plate capable of supporting the bottom side of the printing material is provided on one side of the working platform, and two limiting sliding blocks capable of being clamped on both sides of the printing material are slidably connected to the support plate.

[0015] Optionally, the raw material unwinding roller and / or the film tearing winding roller and / or the finished product winding roller and / or the flattening roller are all driven to rotate by a servo motor.

[0016] Optionally, the raw material unwinding roller, the film tearing winding roller, the finished product winding roller, and the flattening roller are all arranged on a frame.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the raw material unwinding roller, the film tearing and winding roller and the flattening roller can all be arranged on the frame, and are combined to form a group of conveying structures for flattening the printing raw materials and conveying them into the screen printing machine. The protective film and the printing raw materials are guided to separate at the front end of the working platform on the screen printing machine by the flattening roller, the fan bracket and the film tearing and winding roller. At the same time, the ion fan is used to face the printing raw materials that are completely exposed on the working platform, which can effectively remove the static electricity on the printing raw materials at this stage, thereby improving the flatness of the printed water glue and reducing the formation of glue spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the material path of the printing material in the preferred embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a support plate and a limit slider in a preferred embodiment of the utility model;

[0021] Among them, 1. Screen printing machine; 101. Working platform; 2. Fan bracket; 4. Raw material unwinding roller; 5. Film tearing and winding roller; 6. Flattening roller; 7. Finished product winding roller; 8. Printing raw material; 801. Protective film; 9. Ion fan; 10. Adjusting screw; 11. Support plate; 12. Limiting slider. DETAILED DESCRIPTION

[0022] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "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 the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] like Figure 1-Figure 2 As shown, a light guide plate printing device includes a frame and a screen printing machine 1 and a fan bracket 2 arranged on the frame; the front end of the screen printing machine 1 is provided with a raw material unwinding roller 4, a film tearing winding roller 5 and a plurality of groups of flattening rollers 6, and the rear end of the screen printing machine 1 is provided with a finished product winding roller 7; wherein, the fan bracket 2 is suspended above the flattening roller 6, and the printing material 8 on the raw material unwinding roller 4 is spread on the surface of the working platform 101 on the screen printing machine 1 after bypassing the plurality of groups of flattening rollers 6, and the protective film 801 on the printing material 8 is separated from the printing material 8 from the front end of the working platform 101, and is connected to the film tearing winding roller 5 after bypassing the fan bracket 2; the fan bracket 2 is provided with an ion fan 9 suspended above the protective film 801 and facing the working platform 101.

[0025] Specifically, the raw material unwinding roller 4, the film tearing winding roller 5 and the flattening roller 6 can all be arranged on the frame, and are combined to form a set of conveying structures for flattening the printing raw material 8 and conveying it into the screen printing machine 1. The front end of the working platform 101 on the screen printing machine 1 is selected to separate the protective film 801 from the printing raw material 8, which can effectively reduce the dust suction during the material feeding process; at the same time, the ion fan 9 is used to face the printing raw material 8 on the working platform 101, which can effectively reduce the accumulation of charges, thereby improving the flatness of the printed water glue and reducing the formation of glue spots.

[0026] As mentioned above, the raw material unwinding roller 4 and / or the film tearing winding roller 5 and / or the finished product winding roller 7 and / or the flattening roller 6 are all driven to rotate by a servo motor, and the raw material unwinding roller 4, the film tearing winding roller 5, the finished product winding roller 7, and the flattening roller 6 are all arranged on the frame to ensure the tension of the printing material 8 when the material is fed. At the same time, the screen printing machine 1 in the above technical scheme is a printing machine commonly used in the prior art that uses a screen printing plate for printing. Preferably, the screen printing machine 1 uses a flat screen plane screen printing method to print water glue. Flat screen plane screen printing; that is, using a flat screen plate to print on a flat substrate, generally the squeegee presses the printing plate horizontally, and the substrate is changed by the rise and fall of the printing plate. In order to further improve the quality of the water glue printed on the light guide, the moving speed of the squeegee can be slowed down, thereby reducing the flying ink phenomenon generated during the movement of the squeegee; at the same time, the squeegee can be pressed down to be flush with the plane of the screen plate to reduce the rebound and throwing of ink after scraping.

[0027] As described above, the moving speed and frequency of the protective film 801 relative to the fan bracket 2 are equal to the moving speed and frequency of the printing material 8 relative to the working platform 101, and the position where the protective film 801 is separated from the printing material 8 relative to the working platform 101 remains fixed or within a certain error range, thereby ensuring that the tension of the printing material 8 on the working platform 101 remains stable and improving the quality of the printed water-based glue.

[0028] As mentioned above, an electrostatic rope is provided at the feeding front end of the screen printer 1, one end of the electrostatic rope is connected to the screen printer 1, and the other end is connected to the ground, which is used to eliminate the charge accumulated on the conductor of the screen printer 1 to ensure the safety of the equipment operation.

[0029] Furthermore, a windshield cloth for blocking ion wind from entering the interior of the screen printing machine 1 is provided at the feeding front end of the screen printing machine 1, so as to prevent the water content of the water glue from evaporating and drying out.

[0030] Furthermore, the ion fan 9 is hinged on the fan bracket 2, and the fan bracket 2 is provided with an adjustment screw 10 capable of locking the position of the ion fan 9. Specifically, the adjustment screw 10 can be used as a hinge axis for the ion fan 9 to be hinged on the fan bracket 2. When the adjustment screw 10 is screwed tightly with the fan bracket 2, the ion fan 9 can be fixed on the fan bracket 2, so as to facilitate the adjustment of the blowing direction of the ion fan 9 and maximize the effect of the ion wind.

[0031] In this embodiment, a support plate 11 capable of supporting the bottom side of the printing material 8 is provided on one side of the working platform 101, and two limit sliders 12 capable of being clamped on both sides of the printing material 8 are slidably connected to the support plate 11, which are used to limit and guide the position of the printing material 8 on the working platform 101. Specifically, a dovetail groove is provided on the support plate 11, and the limit slider 12 is slidably embedded in the dovetail groove, and a screw rod having one end capable of abutting against the bottom of the dovetail groove is threadedly connected to the limit slider 12. By tightening or loosening the screw rod, the position of the limit slider 12 on the support plate 11 can be adjusted and fixed to meet different usage requirements.

[0032] Working principle: the material unwinding roller 4, the film tearing and winding roller 5 and the flattening roller 6 can all be arranged on the frame, and are combined to form a set of conveying structures for flattening the printing material 8 and conveying it into the screen printing machine 1. The protective film 801 and the printing material 8 are separated at the front end of the working platform 101 on the screen printing machine 1 by guiding the flattening roller 6, the fan bracket 2 and the film tearing and winding roller 5. At the same time, the ion fan 9 is used to face the printing material 8 completely exposed on the working platform 101, which can effectively remove the static electricity on the printing material 8 at this stage, thereby improving the flatness of the printed water glue and reducing the formation of glue spots.

[0033] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A light guide printing device, characterized in that: It comprises a frame, and a screen printing machine (1) and a fan bracket (2) arranged on the frame; The front end of the screen printing machine (1) is provided with a raw material unwinding roller (4), a film tearing winding roller (5) and a plurality of groups of flattening rollers (6), and the rear end of the screen printing machine (1) is provided with a finished product winding roller (7); The fan bracket (2) is suspended above the flattening roller (6), the printing material (8) on the material unwinding roller (4) passes around a plurality of groups of the flattening rollers (6) and is then laid flat on the surface of a working platform (101) on the screen printing machine (1), the protective film (801) on the printing material (8) is separated from the printing material (8) at the front end of the working platform (101), and passes around the fan bracket (2) and is connected to the film tearing and winding roller (5); The fan support (2) is provided with an ion fan (9) suspended above the protective film (801) and facing the working platform (101).

2. The light guide sheet printing device according to claim 1, characterized in that: The moving speed and frequency of the protective film (801) relative to the fan support (2) are equal to the moving speed and frequency of the printing material (8) relative to the working platform (101).

3. The light guide sheet printing device according to claim 1, characterized in that: The front end of the screen printing machine (1) is provided with an electrostatic rope.

4. The light guide sheet printing device according to claim 1, characterized in that: The front end of the screen printing machine (1) is provided with a windshield cloth for blocking ion wind from entering the interior thereof.

5. The light guide sheet printing device according to claim 1, characterized in that: The ion fan (9) is hinged on the fan bracket (2), and the fan bracket (2) is provided with an adjusting screw (10) capable of locking the position of the ion fan (9).

6. The light guide sheet printing device according to claim 1, characterized in that: A support plate (11) capable of supporting the bottom side of the printing material (8) is provided on one side of the working platform (101), and two limit sliders (12) capable of being clamped on both sides of the printing material (8) are slidably connected to the support plate (11).

7. The light guide sheet printing device according to claim 1, characterized in that: The raw material unwinding roller (4) and / or the film tearing winding roller (5) and / or the finished product winding roller (7) and / or the flattening roller (6) are all driven to rotate by a servo motor.

8. The light guide sheet printing device according to claim 1, characterized in that: The raw material unwinding roller (4), the film tearing winding roller (5), the finished product winding roller (7), and the flattening roller (6) are all arranged on a frame.

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