Glass drying device and drying method

Abstract

The invention relates to the technical field of glass processing, in particular to a glass drying device and method. The laser assembly is arranged above the conveying belt, the light emitting end of the laser assembly faces the conveying face of the conveying belt, and the length of the laser irradiation area, irradiated on the conveying belt, of the laser assembly is larger than the width or length of glass. Or the width of the laser irradiation area, irradiated on the conveying belt, of the laser assembly is larger than the width of the printing belt on the glass. The printing ink and silver paste drying device can quickly dry printing ink and silver paste.

Description

Technical Field

[0001] The present invention relates to the technical field of glass processing, and in particular to a glass drying device and a drying method. Background Art

[0002] During the production process of glass, such as automotive glass, ink will be printed on the glass; such as conductive glass, silver paste will be printed on the glass. Whether it is ink printing or silver paste printing, it needs to go through a drying process to dry the ink and silver paste. At present, natural drying or hot air drying is adopted. Natural drying requires a long waiting time and is not suitable for automated production lines with strong continuity. Hot air drying requires a long hot blowing channel, which not only occupies a large production line space, but also the temperature in the hot blowing channel can affect the stress structure of the glass. In addition, hot air consumes more energy and requires a cooling section, which increases energy consumption space. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a glass drying device and a drying method, which can quickly dry ink and silver paste.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A technical solution adopted by the present invention is: a glass drying device, including a conveyor belt and a laser assembly; The laser assembly is arranged above the conveyor belt, and the light emitting end of the laser assembly faces the conveying surface of the conveyor belt. The length of the laser irradiation area of ​​the conveyor belt irradiated by the laser assembly is greater than the width or length of the glass; Alternatively, the width of the laser irradiation area of ​​the laser assembly irradiating the conveyor belt is greater than the width of the printing belt on the glass.

[0005] In order to solve the above technical problems, another technical solution adopted by the present invention is: a drying method, irradiating laser on glass; The laser beam is moved relative to the glass so that the laser beam scans the printed pattern on the glass.

[0006] The beneficial effect of the present invention is that the conveyor belt is not only convenient for the glass drying device to transport glass, but also can be spliced ​​into the glass transport line in the printing process. A laser component is added above the conveyor belt, and the laser component irradiates the printed lines on the glass with laser. Since the laser has a high energy density, the water and solvent in the ink or silver paste at the irradiated part evaporates quickly, thereby improving the efficiency of the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic diagram of the structure of a glass drying device proposed by the present invention Figure 1 ; Figure 2 A schematic diagram of the structure of a glass drying device proposed by the present invention Figure 2 ; Figure 3 A schematic diagram of the structure of a glass drying device proposed by the present invention Figure 3 ; Figure 4 Schematic diagram of the movement of the laser irradiation area on the glass in a drying method proposed by the present invention Figure 1 ; Figure 5 Schematic diagram of the movement of the laser irradiation area on the glass in a drying method proposed by the present invention Figure 2 ; Figure 6 Schematic diagram of the movement of the laser irradiation area on the glass in a drying method proposed by the present invention Figure 3 ; Description of labels: 1. Conveyor belt; 2. Laser assembly; 3. Laser irradiation area; 4. First reciprocating device; 5. Second reciprocating device; 6. Third reciprocating device; 7. Positioning assembly; 71. first positioning portion; 72. second positioning portion; 8. Ink. DETAILED DESCRIPTION

[0008] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0009] Please refer to Figures 1 to 3 As shown, a glass drying device includes a conveyor belt 1 and a laser assembly 2; the laser assembly 2 is arranged above the conveyor belt 1, and the light emitting end of the laser assembly 2 faces the conveying surface of the conveyor belt 1, and the length of the laser irradiation area 3 irradiated by the laser assembly 2 on the conveyor belt 1 is greater than the width or length of the glass; or, the length or width of the laser irradiation area 3 irradiated by the laser assembly 2 on the conveyor belt 1 is greater than the width of the printing belt on the glass.

[0010] Among them, the laser component 2 preferably adopts an infrared fiber laser.

[0011] Working principle: The conveyor belt 1 is not only convenient for the glass drying device to transport glass, but also can be spliced ​​into the glass transport line in the printing process. A laser component 2 is added above the conveyor belt 1, and the laser component 2 irradiates the printed lines on the glass with laser. Since the laser has a high energy density, the water and solvent in the ink or silver paste at the irradiated place evaporate quickly, thereby improving the efficiency of the drying process.

[0012] Specific use process: When facing the drying of silver paste, since silver paste is mainly used for conductivity on glass, its printed lines will extend into the middle area of ​​the glass, and the lines are arranged according to the design requirements. In order to ensure the comprehensive drying of the silver paste, the length of the laser irradiation area 3 is determined according to the placement of the glass on the conveyor belt 1. If the wide side of the glass faces the laser irradiation area 3, the length of the laser irradiation area 3 is greater than the width of the glass. If the long side of the glass faces the laser irradiation area 3, the length of the laser irradiation area 3 is greater than the length of the glass. In this way, the laser irradiation area 3 only needs to move along the length direction or width direction of the glass to scan the glass surface, avoiding the situation where the laser irradiation area 3 turns multiple times and misses the scan.

[0013] When the ink 8 is drying, the ink 8 is mainly printed on the edge of the glass to cover the sheet metal. In order to save the use of the laser, that is, to save energy, it is only necessary to move the laser irradiation area 3 along the edge of the glass. At the same time, in order to ensure that the printed lines of the ink 8 are completely covered, such as Figure 4 and Figure 5 As shown, the length or width of the laser irradiation area 3 is greater than the width of the printing band on the glass. Since the laser only acts on the printing area and the surroundings of the ink 8, the influence of the laser on the stress structure of the glass can be minimized. Of course, during the drying of the ink 8, Figure 6 As shown, the length of the laser irradiation area 3 can also be set to be greater than the width or length of the glass.

[0014] It is worth noting that the laser assembly 2 can be a single laser or a plurality of lasers combined together, which means that the laser irradiation area 3 is composed of a light spot irradiated by at least one laser. When the light spots irradiated by a plurality of lasers are used to form the laser irradiation area 3, the light spots irradiated by adjacent lasers have overlapping parts.

[0015] In some implementations, please refer to Figure 1 As shown, the laser assembly 2 is fixedly arranged above the conveyor belt 1. The length of the laser irradiation area 3 is set to be greater than the width or length of the glass, and the glass is gradually transported through the laser irradiation area 3 by the conveyor belt 1, thereby completing the drying of the ink 8 or the silver paste.

[0016] In some implementations, please refer to Figure 2 and Figure 3 As shown, the laser assembly 2 is horizontally movable above the conveying surface of the conveyor belt 1. The laser assembly 2 is movable so as to control the movement of the laser irradiation area 3. During the drying process, the conveyor belt 1 preferably stops the transmission operation, and the laser assembly 2 moves to complete the drying. Figure 6When the ink 8 is drying and the silver paste is drying, the conveyor belt 1 can transport the glass and the laser component 2 can be stationary; of course, the conveyor belt 1 can also move the laser component 2 while performing the transmission operation, but in this case the laser output power of the laser component 2 is greater than the laser output power of the laser component 2 in the above-mentioned moving condition.

[0017] In some implementations, please refer to Figure 2 As shown, there is a gantry, on which are provided a first reciprocating device 4 and a second reciprocating device 5, wherein the first reciprocating device 4 has a movable end parallel to the conveying direction of the conveyor belt 1, the second reciprocating device 5 is connected to the movable end of the first reciprocating device 4, the second reciprocating device 5 has a movable end perpendicular to the conveying direction of the conveyor belt 1, and the laser assembly 2 is connected to the movable end of the second reciprocating device 5.

[0018] It can be seen from the above description that the horizontal movement of the laser assembly 2 above the conveyor belt 1 is achieved through the cooperation of the first reciprocating device 4 and the second reciprocating device 5 .

[0019] In some implementations, please refer to Figure 3 As shown, there is a gantry, a first reciprocating device 4 is provided at the side end of the conveyor belt 1, the first reciprocating device 4 has a movable end parallel to the conveying direction of the conveyor belt 1, the gantry is connected to the movable end of the first reciprocating device 4, and the upper part of the gantry There are The conveyor belt 1 has a second reciprocating device 5 , the second reciprocating device 5 has a movable end perpendicular to the conveying direction of the conveyor belt 1 , and the laser assembly 2 is connected to the movable end of the second reciprocating device 5 .

[0020] It can be seen from the above description that the horizontal movement of the laser assembly 2 above the conveyor belt 1 is achieved through the cooperation of the first reciprocating device 4 and the second reciprocating device 5 .

[0021] In certain embodiments, a glass drying device further includes a third reciprocating device 6 having a movable end that moves in a vertical direction, the third reciprocating device 6 being connected to the movable end of the second reciprocating device 5, and the laser assembly 2 being connected to the movable end of the third reciprocating device 6.

[0022] It can be known from the above description that the distance between the laser assembly 2 and the conveyor belt 1 can be adjusted by using the third reciprocating device 6 .

[0023] In some implementations, please refer to Figures 1 to 3As shown, the conveyor belt 1 is provided with a positioning assembly 7 in a lifting manner, and a positioning station is provided on the conveying surface of the conveyor belt 1, and the positioning assembly 7 has positioning blocks gathered toward the positioning station. The positioning assembly 7 includes a first positioning portion 71 and a second positioning portion 72, the first positioning portion 71 has two positioning blocks that move relative to each other parallel to the conveying direction of the conveyor belt 1, and the second positioning portion 72 has two positioning blocks that move relative to each other perpendicular to the conveying direction of the conveyor belt 1.

[0024] From the above description, it can be seen that when drying the ink 8 and the silver paste, the glass is pushed to the positioning station of the conveyor belt 1 through the first positioning part 71 and the second positioning part 72 to ensure that the laser assembly 2 can fully dry the ink 8 and the silver paste.

[0025] A drying method comprises irradiating a laser on the glass and moving the laser beam relative to the glass so that the laser beam scans the printed lines on the glass. The preferred laser is an infrared laser.

[0026] Specifically, when drying the ink 8, Figure 4 As shown, let the laser beam move along the printed lines on the glass; if the printed lines of the ink 8 are symmetrical patterns, then Figure 5 As shown, two lasers are used to irradiate laser beams to the glass, and the moving paths of the two lasers are symmetrical; of course, when the ink 8 is dried, it can be Figure 6 As shown, multiple lasers are used to irradiate laser beams to the glass. If the wide side of the glass faces the laser irradiation area 3, the length of the laser irradiation area 3 is greater than the width of the glass, and the laser irradiation area 3 is moved along the length direction of the glass to complete the drying; if the long side of the glass faces the laser irradiation area 3, the length of the laser irradiation area 3 is greater than the length of the glass, and the laser irradiation area 3 is moved along the width direction of the glass to complete the drying.

[0027] Furthermore, the moving speed of the laser beam is 100 mm / s to 500 mm / s, and the power of the laser beam is 0.08 W / mm 2 Up to 0.2W / mm 2 .

[0028] Specifically, a 2000W laser is used, the laser output rate is controlled at 20% to 80%, and the preferred moving speed of the laser beam is 100mm / s. A 3000W laser is used, the laser output rate is controlled at 20% to 80%, and the preferred moving speed of the laser beam is 200mm / s. The laser irradiation area 3 irradiates the ink and silver paste on the glass at a power density of 0.15W per square millimeter within 1 second.

[0029] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A glass drying device, characterized in that: Includes conveyor belt and laser assembly; The laser assembly is arranged above the conveyor belt, and the light emitting end of the laser assembly faces the conveying surface of the conveyor belt. The length of the laser irradiation area of ​​the conveyor belt irradiated by the laser assembly is greater than the width or length of the glass; Alternatively, the width of the laser irradiation area of ​​the laser assembly irradiating the conveyor belt is greater than the width of the printing belt on the glass.

2. The glass drying device according to claim 1, characterized in that: The laser assembly is arranged above the conveying surface of the conveyor belt so as to be horizontally movable.

3. The glass drying device according to claim 2, characterized in that: Also includes a first reciprocating device and a second reciprocating device, The first reciprocating device has a movable end parallel to the conveying direction of the conveyor belt, The second reciprocating device is connected to the movable end of the first reciprocating device, the second reciprocating device has a movable end perpendicular to the conveying direction of the conveyor belt, and the laser assembly is connected to the movable end of the second reciprocating device.

4. The glass drying device according to claim 3, characterized in that: It also includes a third reciprocating device, which has a movable end that moves in a vertical direction. The third reciprocating device is connected to the movable end of the second reciprocating device, and the movable end of the third reciprocating device is connected to the laser assembly.

5. The glass drying device according to claim 1, characterized in that: The conveyor belt is provided with a positioning assembly for lifting, a conveying surface of the conveyor belt is provided with a positioning station, and the positioning assembly has positioning blocks gathered toward the positioning station.

6. The glass drying device according to claim 5, characterized in that: The positioning assembly includes a first positioning portion and a second positioning portion, wherein the first positioning portion has two positioning blocks that move relative to each other parallel to the conveying direction of the conveyor belt, and the second positioning portion has two positioning blocks that move relative to each other perpendicular to the conveying direction of the conveyor belt.

7. The glass drying device according to claim 1, characterized in that: The laser component adopts an infrared fiber laser.

8. A drying method based on the glass drying device according to any one of claims 1 to 7, characterized in that : Shining a laser on the glass; The laser beam is moved relative to the glass so that the laser beam scans the printed pattern on the glass.

9. The drying method according to claim 8, characterized in that: The moving speed of the laser beam is 100 mm / s to 500 mm / s, and the power of the laser beam is 0.08 W / mm 2 Up to 0.2W / mm 2 .

10. The drying method according to claim 8, wherein the laser is an infrared laser.

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