WO2015027432A1 - 一种面板涂胶装置 - Google Patents

一种面板涂胶装置 Download PDF

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Publication number
WO2015027432A1
WO2015027432A1 PCT/CN2013/082565 CN2013082565W WO2015027432A1 WO 2015027432 A1 WO2015027432 A1 WO 2015027432A1 CN 2013082565 W CN2013082565 W CN 2013082565W WO 2015027432 A1 WO2015027432 A1 WO 2015027432A1
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WIPO (PCT)
Prior art keywords
storage tank
liquid storage
vacuum
needle
nozzle
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PCT/CN2013/082565
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English (en)
French (fr)
Inventor
马涛
宋涛
刘明
赵国栋
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深圳市华星光电技术有限公司
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Publication of WO2015027432A1 publication Critical patent/WO2015027432A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/49—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for solvents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path

Definitions

  • the invention relates to the field of panel glue manufacturing, in particular to a panel glue coating device which can prevent the fly-in glue from falling into the glass substrate and improve the product yield.
  • the TFT-LCD has become an important display platform in modern IT and video products.
  • the TFT-LCD generally includes a thin film transistor substrate (Array substrate) disposed opposite to each other, a color filter substrate (CF substrate), and a liquid crystal material interposed between the Array substrate and the CF substrate.
  • the main working principle of the TFT-LCD is: loading the liquid crystal material between the Array substrate and the CF substrate by an appropriate voltage, causing the liquid crystal molecules to deflect under the action of voltage, and obtaining different transmittances through different voltage control, thereby realizing display.
  • the combination of the Array substrate and the CF substrate is mainly completed by the glue of the frame glue, and the frame coating process is divided into two methods: Screen Printing (small size) and Dispenser Printing (large size).
  • the principle of the Dispenser Printing process used in the existing production line is: According to the edited frame glue pattern, the glue in the syringe is spit out on the glass substrate by pressure. Due to the high viscosity of the frame glue currently used (viscosity is generally 400,000 ⁇ 600,000 mPa.s), it is easy to produce the wire and fly the glue when the coating is completed. When it falls into the display area, the product is abnormal and falls to the cutting line. This leads to poor cutting of subsequent processes, which ultimately leads to product scrapping.
  • FIG. 2 to FIG. 5 it is a schematic diagram of the moving state of the syringe in the prior art panel coating process.
  • the syringe 8 is lowered to the coating height (the arrow in the figure is the moving direction) as shown in FIG.
  • the syringe 8 is based on the edited frame glue pattern, using pressure, and the The glue is spit out on the glass substrate 9, as shown in FIG.
  • the syringe 8 starts to rise to the finished height. Due to the large viscosity of the sealant, the drawstring 71 is easily generated, as shown in FIG. 4; as long as the puller 71 is pulled off, the fly-by gel 72 is easily generated.
  • the flying gel 72 may fall to a random position on the glass substrate 9, as shown in FIG.
  • the technical problem to be solved by the present invention is to provide a panel coating device, which can prevent the plastic frame from being coated into the glass substrate and improve the yield of the product; it is safe and controllable, and can avoid environmental pollution.
  • an embodiment of the present invention provides a panel coating apparatus, including: a syringe including a needle attached thereto, wherein the panel coating device further comprises: a flying gel collecting device, comprising: a vacuum a suction pipe, one end of the vacuum suction pipe is provided with a suction port and a nozzle communicating with the vacuum suction pipe, and the other end is connected with a liquid storage tank for storing organic solvent, the suction port is disposed beside the needle, and the liquid storage tank passes through
  • the solvent circulation device is connected to the spray head, wherein: the organic solvent in the liquid storage tank is transported to the spray head through the solvent circulation device to dissolve the sealant sucked by the suction port; and the organic solvent dissolved in the sealant is transported from the vacuum suction pipe to the liquid storage tank;
  • the flying gel collecting device further comprises: a vacuum device connected to the liquid storage tank for supplying vacuum pressure to the flying gel collecting device, a gas-liquid separating device is arranged between the liquid storage tank and the vacuum device; and
  • the nozzle is placed near the suction port.
  • the suction port is located between the coating height of the needle and the coating completion height thereof, and is disposed at a certain distance from the central axis of the needle. Wherein, the distance between the suction port and the central axis of the needle is adjusted.
  • the vacuum device is connected to an organic gas discharge line.
  • the time for the solvent circulation device to supply the organic solvent to the nozzle is set to be adjustable.
  • a panel coating device comprising a syringe, to which a needle is connected
  • the panel coating device further comprises: a flying gel collecting device, which comprises : a vacuum suction pipe, one end of the vacuum suction pipe is provided with a suction port and a nozzle communicating with the vacuum suction pipe, and the other end is connected with a liquid storage tank for storing organic solvent, and the suction port is disposed beside the needle, the liquid storage tank Connected to the spray head through a solvent circulation device, wherein: the organic solvent in the liquid storage tank is transported to the spray head through the solvent circulation device to dissolve the sealant sucked by the suction port; the organic solvent dissolved in the sealant is transported from the vacuum suction pipe to the liquid storage tank groove.
  • the nozzle is placed near the suction port.
  • the suction port is located between the coating height of the needle and the coating completion height thereof, and is disposed at a certain distance from the central axis of the needle.
  • the distance between the suction port and the central axis of the needle is adjusted.
  • the flying gel collecting device further comprises a vacuum device connected to the liquid storage tank for providing vacuum pressure to the flying gel collecting device.
  • a gas-liquid separation device is provided between the liquid storage tank and the vacuum device.
  • the vacuum device is connected to an organic gas discharge line.
  • the liquid storage tank is connected with a liquid injection pipeline, and the first valve is arranged thereon.
  • the liquid storage tank is connected with a drain line, and a second valve is arranged thereon.
  • the time for the solvent circulation device to supply the organic solvent to the nozzle is set to be adjustable.
  • the panel glue applicator provided by the invention can prevent the fly ash from falling into the glass substrate by the corresponding flying rubber collecting device on the side of the syringe needle, thereby improving the yield of the product;
  • the process is carried out in a relatively closed device, the cylinder is operated, safe and controllable, and environmental pollution is also avoided
  • FIG. 1 is a schematic structural view of a panel gluing device according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing a first state of a syringe in a prior art panel coating process.
  • FIG 3 is a schematic view showing a second state of the syringe in the prior art panel coating process.
  • FIG. 4 is a schematic view showing a third state of the syringe in the prior art panel coating process.
  • Fig. 5 is a schematic view showing a fourth state of the syringe in the prior art panel coating process. detailed description
  • a first embodiment of a panel coating device of the present invention is shown.
  • the panel gluing device in this embodiment comprises: a syringe 2 to which a needle 21 is attached.
  • the syringe 2 works in the same manner as the syringe in the prior art, and is also moved according to the sealant pattern.
  • the glue in the cylinder can be extruded from the needle 21 onto the glass substrate by pressure, and the inner casing of the syringe 2 is glued.
  • the main components are epoxy resin, acrylate and the like.
  • the panel gluing device in this embodiment further includes a flying gel collecting device 1 which absorbs the fly gel which may be generated after the syringe 2 is spit out by vacuum pumping, and dissolves in the organic solvent.
  • the flying gel collecting device 1 includes: a vacuum suction pipe 11 having a suction port 12 and a shower head 13 communicating with the vacuum suction pipe 11 at one end thereof, and the other end of the vacuum suction pipe 11 is connected with a liquid storage for storing an organic solvent.
  • the tank 14 is provided at the side of the needle 21, and the reservoir 14 is connected to the head 13 through a solvent circulation device 15.
  • the vacuum suction pipe 11 is connected with a liquid storage tank 14 for storing organic solvent, which can transport the organic solvent in which the sealant is dissolved into the liquid storage tank 14.
  • the fly gel which may be generated after the syringe 2 is discharged from the glue will be sucked by the vacuum suction pipe.
  • the suction port 12 at one end is sucked in.
  • the suction port 12 is provided on the side of the needle 21.
  • the suction port 12 is located between the coating height h of the needle 21 and its coating completion height H, and is disposed at a certain distance L from the central axis of the needle 21.
  • the distance between the suction port 12 and the glass substrate and its distance from the central axis of the needle 21 are optimum values obtained by a plurality of tests.
  • the suction port 12 is set within this range, and the gas flow rate and the vacuum pressure are maintained at a certain value, the organic solvent in which the sealant is dissolved can be introduced into the liquid storage tank 14 along the vacuum suction pipe 11 without The suction port is dripped onto the glass substrate.
  • the distance L between the suction port 12 and the central axis of the needle 21 can also be adjusted according to the actual situation to improve the adaptability of the fly gel collecting device 1.
  • the head 13 is for supplying an organic solvent into the vacuum suction pipe 11, and is mounted on the vacuum suction pipe 11 close to the suction port 12, which can prevent the frame glue sucked by the suction port 12 from adhering due to the inability to dissolve in the organic solvent in time.
  • vacuum suction pipe 11 In the case of vacuum suction pipe 11.
  • the liquid storage tank 14 is a sealed accommodating tank, wherein the organic solvent stored in the embodiment is set to acetone, which can completely dissolve the sealant using the above main component as epoxy resin or acrylate, which can also be used as needed. Use other.
  • the solvent circulation device 15 is connected to the liquid storage tank 14 at the opposite end, and the opposite end is connected to the spray head 13 for circulating the organic solvent in the liquid storage tank 14 to the spray head 13 and entering the vacuum suction pipe through the spray head 13. 11 inside.
  • the syringe 2 When the coating is specifically carried out, the syringe 2 is horizontally moved at the height of h, and after the predetermined pattern coating is completed, it starts to rise to the height of H, and the wire is produced in the process, and a bit of the frame is flying out at the moment of the breaking. Since the suction port 12 is provided on the side of the needle 21, the suction gel enters the vacuum suction pipe 11 due to the suction force of the air flow of the suction port 12, which moves upward into the liquid storage tank 14 and dissolves in the organic solvent. During this process, the sealant moving inside the tube may adhere to the wall of the tube, and the solvent sprayed periodically by the nozzle 13 dissolves the sealant adhered to the tube wall and acts under the action of the air stream.
  • the organic solvent in the liquid storage tank 14 is sent to the shower head 13 through the solvent circulation device 15, dissolves the sealant sucked by the suction port 12, and the organic solvent in which the sealant is dissolved is transported from the vacuum suction pipe 11 to the liquid storage tank 14. .
  • the vacuum pressure is provided to the flyweight collecting device 1 as an upper vacuum device 16 connected to the reservoir 14.
  • the vacuum device 16 is directly in operation, providing vacuum pressure to the entire device, keeping the air flow of the suction port 12 from the outside to the inside.
  • the solvent circulation device 15 is supplied with a solvent to the head 13 at a fixed time interval (set to be adjustable).
  • the vacuum device 16 is connected to an organic gas discharge line 17, which is convenient Centralized collection and management of gases to avoid environmental pollution.
  • a gas-liquid separation device 3 is disposed between the vacuum device 16 and the liquid storage tank 14 in such a manner that the water-like solvent condenses therein to cause the liquid droplets to flow back into the liquid storage tank 14.
  • a drain line 19 is connected to the reservoir 14 and a second valve 5 is provided thereon (when the glue applicator is in operation, it is in a closed state), so that the second valve 5 can be periodically sampled. , monitor the viscosity of the solvent and replace the solvent in time.
  • a liquid injection pipe 18 is connected to the liquid storage tank 14, and a first valve door 4 is provided thereon (when the glue application device is in operation, it is in a closed state).
  • the gluing device stops production, the solvent circulation device 15 is turned off, and waiting for a period of time, all the residual solvent in the vacuum suction pipe 11 is sucked back to the liquid storage tank 14. Further close the vacuum unit 16, open the second valve 5 until the waste liquid is drained, and then close. Open the first valve 4 and inject the reference solvent, then turn it off, turn on the vacuum unit 16 and the solvent circulation unit 15, and resume production after a period of time.
  • the panel coating device of the invention can be applied to similar equipments with high requirements for the coating process in the panel industry such as TFT-LCD, OLED, etc., and can also be specifically optimized according to the environment of the equipment, as long as the organic in the liquid storage tank is satisfied.
  • the solvent can be transported to the spray head to dissolve the sealant sucked by the suction port, and the organic solvent in which the sealant is dissolved can be transported from the vacuum suction pipe to the liquid storage tank.
  • the panel glue applicator of the invention can prevent the fly ash from falling into the glass substrate by the corresponding fly ash collecting device on the side of the needle of the syringe, thereby improving the yield of the product; It is carried out in a relatively closed device, the cylinder is safe, controllable, and environmental pollution can be avoided.

Abstract

一种面板涂胶装置，包括：其上连接有针头（21）的注射筒（2），和飞胶收集装置（1）。飞胶收集装置包括真空吸入管（11），真空吸入管的一端设有吸入口（12）及与真空吸入管相连通的喷头（13），真空吸入管的另一端连接有用以存储有机溶剂的储液槽（14），吸入口设置在针头的旁侧，储液槽通过一溶剂循环装置（15）连接至喷头，储液槽中的有机溶剂通过溶剂循环装置输送至喷头，溶解由吸入口吸入的框胶；溶解有框胶的有机溶剂从真空吸入管输送至储液槽。该面板涂胶装置可防止胶框涂布制成中飞胶落入玻璃基板上，提高产品的合格率；安全可控，可避免环境污染。

Description

一种面板涂胶装置 本申请要求于 2013 年 8 月 26 日提交中国专利局、 申请号为 201310374947.4 、发明名称为 "一种面板涂胶装置"的中国专利申请的优先 权， 上述专利的全部内容通过引用结合在本申请中。 技术领域
本发明涉及面板涂胶制造领域， 尤其涉及一种可防止胶框涂布制成中飞 胶落入玻璃基板上， 使产品良率提高的面板涂胶装置。 背景技术
薄膜晶体管液晶显示器 (Thin Film Transistor Liquid Crystal Display , TFT-LCD) 已经成为了现代 IT、 视讯产品中重要的显示平台。 TFT-LCD — 般包括上下相对设置的薄膜晶体管基板 (Array基板)、 彩色滤光片基板 (CF 基板） 和夹设在 Array基板与 CF基板之间的液晶材料。 TFT-LCD 的主要工 作原理为： 通过适当的电压加载在 Array基板与 CF基板之间的液晶材料， 使液晶分子在电压作用下发生偏转， 通过不同电压控制得到不同的穿透率， 从而实现了显示。
目前， Array基板与 CF基板的结合主要通过框胶粘贴完成， 框胶涂布 制程分为 Screen Printing (小尺寸）和 Dispenser Printing (大尺寸）两种方法。现 有生产线使用的 Dispenser Printing制程的原理是： 根据编辑好的框胶图形， 通过压力将注射筒内的胶材吐出在玻璃基板上。 由于目前使用的框胶粘度较 大（粘度一般为 400000~600000 mPa.s ) , 在涂布完成时很容易产生牵丝并飞 胶，落入显示区则造成产品显示异常，落到切割线则造成后续制程切割不良， 最终均引起产品报废。
结合参见图 2-图 5所示，为现有技术面板涂胶制程中注射筒的移动状态 示意图。 框胶涂布前， 注射筒 8下降到涂布高度（图示箭头为移动方向）， 如图 2所示。 随后， 注射筒 8根据编辑好的框胶图形， 利用压力， 将其中的 胶材吐出在玻璃基板 9上， 如图 3所示。 涂布完成后， 注射筒 8开始上升至 完成高度， 由于框胶粘度较大， 容易产生牵丝 71 , 如图 4所示； 只要牵丝 71被拉断， 就容易产生飞胶 72, 当注射筒 8移动到其他位置准备下一次涂 布时， 飞胶 72可能落到玻璃基板 9上的随机位置， 如图 5所示。
在消除或减少飞胶的方法上， 业界目前有两种途径：
1、 延长注射筒涂布完成到移动的等待时间， 避免引起气流紊乱， 降低 飞胶的可能性。 此方式虽对飞胶有一定的改善效果， 但会延长产品的生产时 间， 严重影响产能。
2、 涂布完成时注射筒增加回吸动作， 将多余的框胶吸回到注射筒内， 降低飞胶几率。 此方式的缺陷是： 回吸的时机早晚和压力大小较难掌握， 设 置不当则造成吐出的框胶量不足引起断胶或吐出量太多引起大头胶。 发明内容
本发明所要解决的技术问题在于， 提供一种面板涂胶装置， 可防止胶框 涂布制成中飞胶落入玻璃基板上， 提高产品的良率； 安全可控， 可避免环境 污染。
为了解决上述技术问题， 本发明的实施例提供了一种面板涂胶装置， 包 括： 包括注射筒， 其上连接有针头， 其中， 面板涂胶装置还包括： 飞胶收集 装置， 其包括： 真空吸入管， 真空吸入管的一端设有吸入口及与真空吸入管 相连通的喷头， 其另一端连接有用以存储有机溶剂的储液槽， 吸入口设置在 针头的旁侧， 储液槽通过一溶剂循环装置连接至喷头， 其中： 储液槽中的有 机溶剂通过溶剂循环装置输送至喷头， 溶解由吸入口吸入的框胶； 溶解有框 胶的有机溶剂从真空吸入管输送至储液槽； 飞胶收集装置还包括： 连接在储 液槽上的用以为飞胶收集装置提供真空压力的真空装置， 在储液槽和真空装 置之间设有气液分离装置； 储液槽连接有一注液管路， 其上设有第一阀门， 储液槽连接有一排液管路， 其上设有第二阀门。
其中， 喷头设置在靠近吸入口的位置。
其中， 吸入口位于针头的涂布高度和其涂布完成高度之间， 且设置与针 头的中心轴线保持一定的距离。 其中， 吸入口与针头中心轴线的距离设为可调。
其中， 真空装置连接至一有机气体排放管路。
其中， 溶剂循环装置向喷头提供有机溶剂的时间设为可调。
为了解决上述技术问题， 本发明采用的另一种技术方案是： 一种面板涂 胶装置， 包括注射筒， 其上连接有针头， 其中， 面板涂胶装置还包括： 飞胶 收集装置， 其包括： 真空吸入管， 真空吸入管的一端设有吸入口及与真空吸 入管相连通的喷头， 其另一端连接有用以存储有机溶剂的储液槽， 吸入口设 置在针头的旁侧， 储液槽通过一溶剂循环装置连接至喷头， 其中： 储液槽中 的有机溶剂通过溶剂循环装置输送至喷头， 溶解由吸入口吸入的框胶； 溶解 有框胶的有机溶剂从真空吸入管输送至储液槽。
其中， 喷头设置在靠近吸入口的位置。
其中， 吸入口位于针头的涂布高度和其涂布完成高度之间， 且设置与针 头的中心轴线保持一定的距离。
其中， 吸入口与针头中心轴线的距离设为可调。
其中， 飞胶收集装置还包括连接在储液槽上的用以为飞胶收集装置提供 真空压力的真空装置。
其中， 在储液槽和真空装置之间设有气液分离装置。
其中， 真空装置连接至一有机气体排放管路。
其中， 储液槽连接有一注液管路， 其上设有第一阀门。
其中， 储液槽连接有一排液管路， 其上设有第二阀门。
其中， 溶剂循环装置向喷头提供有机溶剂的时间设为可调。
本发明所提供的面板涂胶装置，通过在注射筒针头的旁侧设置相应的飞 胶收集装置，可防止胶框涂布制成中飞胶落入玻璃基板上，提高产品的良率； 收集过程在相对封闭的装置内进行， 操作筒便， 安全可控， 还可避免环境污
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例或现有技术描述中所需要使用的附图作筒单地介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明实施例面板涂胶装置的结构示意图。
图 2是现有技术面板涂胶制程中注射筒的第一状态示意图。
图 3是现有技术面板涂胶制程中注射筒的第二状态示意图。
图 4是现有技术面板涂胶制程中注射筒的第三状态示意图。
图 5是现有技术面板涂胶制程中注射筒的第四状态示意图。 具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而 不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
参见图 1 , 为本发明面板涂胶装置的实施例一。
本实施例中的面板涂胶装置包括： 注射筒 2, 其上连接有针头 21。 注射 筒 2与现有技术中注射筒的工作方式相同， 也是依据框胶图形进行移动， 通 过压力便可将筒内的胶材由针头 21挤出在玻璃基板上， 注射筒 2内框胶的 主要成分为环氧树脂、 丙烯酸酯等等。
本实施例中的面板涂胶装置还包括飞胶收集装置 1 , 其通过真空抽气， 将注射筒 2吐完胶后可能产生的飞胶进行吸纳，并溶解于有机溶剂。具体地， 飞胶收集装置 1包括： 真空吸入管 11 , 真空吸入管 11的一端设有吸入口 12 及与真空吸入管 11相连通的喷头 13, 其另一端连接有用以存储有机溶剂的 储液槽 14, 吸入口 12设置在针头 21的旁侧， 储液槽 14通过一溶剂循环装 置 15连接至喷头 13。
真空吸入管 11与存储有机溶剂的储液槽 14相连接， 其可以将溶解有框 胶的有机溶剂输送到储液槽 14中， 注射筒 2吐完胶后可能产生的飞胶将由 真空吸入管 11一端部的吸入口 12吸入。 具体实施时， 吸入口 12设置在针 头 21的旁侧。 本实施例中， 吸入口 12位于针头 21涂布高度 h和其涂布完 成高度 H之间， 且设置与针头 21的中心轴线保持一定的距离 L。 上述吸入口 12与玻璃基板的距离及其与针头 21中心轴线的距离是通过 多次试验得出的最佳值。 当在此范围内对吸入口 12进行设定， 且保持气流 量和真空压在一定值时， 便可使溶解有框胶的有机溶剂沿真空吸入管 11进 入到储液槽 14而不会从吸入口滴出到玻璃基板上。 当然， 在气流量和真空 压变化的情况下，也可以根据实际情况对吸入口 12与针头 21中心轴线的距 离 L进行调整， 以提升飞胶收集装置 1的适应性。
喷头 13用于供给有机溶剂至真空吸入管 11内，其安装在靠近吸入口 12 的真空吸入管 11上， 其可以避免发生由吸入口 12吸入的框胶因不能及时溶 于有机溶剂而粘附在真空吸入管 11内的情况。
储液槽 14为一密封的容置槽， 其中存储的有机溶剂在本实施例中设为 丙酮， 其可以完全溶解采用上述主要成分为环氧树脂或丙烯酸酯的框胶， 其 也可以根据需要选用其它。
溶剂循环装置 15—端连接在储液槽 14上，相对的另一端连接在喷头 13 上， 其作用是将储液槽 14 中的有机溶剂循环输送至喷头 13, 并经喷头 13 进入真空吸入管 11内。
具体实施涂布时， 注射筒 2在 h高度水平移动， 完成预定图案涂布后， 开始上升至 H高度， 此过程中产生牵丝， 在拉断的瞬间有点状框胶飞出。 由 于在针头 21的旁侧设置吸入口 12, 受吸入口 12气流的吸力影响， 飞胶进入 真空吸入管 11 , 其在管内向上移动进入到储液槽 14中并溶解于有机溶剂。 在此过程中， 管内移动的框胶有极大可能会粘附到管壁上， 而喷头 13定期 喷入的溶剂便可将粘附于管壁的框胶溶解， 并在气流的作用下带入到溶剂槽 14内， 从而达到防止飞胶的目的。 也就是说， 储液槽 14中的有机溶剂通过 溶剂循环装置 15输送至喷头 13,溶解由吸入口 12吸入的框胶，溶解有框胶 的有机溶剂从真空吸入管 11输送至储液槽 14。
优选的实施方式中， 为飞胶收集装置 1提供真空压力的为一连接在储液 槽 14的上真空装置 16。 实施时， 除换液时间外， 真空装置 16—直处于运行 状态， 为整个装置提供真空压力， 保持吸入口 12的气流由外向内。 同时， 溶剂循环装置 15间隔固定时间 （设为可调 ) 向喷头 13供应溶剂。
优选的实施方式中， 真空装置 16连接至一有机气体排放管路 17, 便于 气体的集中收集和管理， 避免对环境造成污染。
优选的实施方式中， 由于真空吸入管 11的端部伸入到储液槽 14的溶剂 液面以下， 密闭的储液槽 14 内可能有大量的水雾状溶剂， 为减少直接排出 造成较大浪费， 在真空装置 16与储液槽 14间设置气液分离装置 3, 其作用 是使水雾状溶剂在其中凝结成液滴回流至储液槽 14内。
优选的实施方式中， 随着储液槽 14溶剂中的框胶浓度的不断增大， 溶 剂的粘度也会不断增大， 最终可能导致喷头 13喷出的溶剂粘附在真空吸入 管 11内无法向上移动， 最终滴到玻璃基板上。 因此， 在储液槽 14上连接有 一排液管路 19, 并且在其上设置第二阀门 5 (涂胶装置工作时， 其为关闭状 态）， 这样， 就可以定期从第二阀门 5进行取样， 监测溶剂的粘度， 及时更 换溶剂。
进一步的， 储液槽 14上连接有一注液管路 18, 并且在其上设有第一阀 门 4 (涂胶装置工作时， 其为关闭状态）。
具体更换溶剂时， 涂胶装置停止生产， 关闭溶剂循环装置 15并等待一 段时间， 使真空吸入管 11内的残留溶剂全部回吸至储液槽 14。 进一步关闭 真空装置 16, 打开第二阀门 5至废液排尽， 再关闭。 打开第一阀门 4注入指 定量的溶剂， 然后将其关闭， 打开真空装置 16和溶剂循环装置 15, —段时 间后便可恢复生产。
本发明的面板涂胶装置可以应用在 TFT-LCD、 OLED等面板行业针对涂 胶制程要求较高的类似设备上， 也可根据设备使用环境再做特定的优化， 只 要满足储液槽中的有机溶剂能够输送至喷头， 溶解由吸入口吸入的框胶， 使 溶解有框胶的有机溶剂从真空吸入管输送至储液槽即可。
本发明的面板涂胶装置，通过在注射筒的针头旁侧设置相应的飞胶收集 装置， 可防止胶框涂布制成中飞胶落入玻璃基板上， 提高产品的良率； 收集 过程在相对封闭的装置内进行， 操作筒便， 安全可控， 还可避免环境污染。

Claims

权 利 要 求
1、 一种面板涂胶装置， 包括注射筒， 其上连接有针头， 其中， 所述面 板涂胶装置还包括： 飞胶收集装置， 其包括： 真空吸入管， 所述真空吸入管 的一端设有吸入口及与所述真空吸入管相连通的喷头， 其另一端连接有用以 存储有机溶剂的储液槽， 所述吸入口设置在所述针头的旁侧， 所述储液槽通 过一溶剂循环装置连接至所述喷头， 所述储液槽中的有机溶剂通过所述溶剂 循环装置输送至所述喷头， 溶解由所述吸入口吸入的框胶； 所述溶解有框胶 的有机溶剂从所述真空吸入管输送至所述储液槽；
所述飞胶收集装置还包括： 连接在所述储液槽上的用以为所述飞胶收集 装置提供真空压力的真空装置，在所述储液槽和所述真空装置之间设有气液 分离装置；
所述储液槽连接有一注液管路， 其上设有第一阀门， 所述储液槽连接有 一排液管路， 其上设有第二阀门。
2、 如权利要求 1所述的面板涂胶装置， 其中， 所述喷头设置在靠近所 述吸入口的位置。
3、 如权利要求 2所述的面板涂胶装置， 其中， 所述吸入口位于所述针 头的涂布高度和其涂布完成高度之间，且设置与所述针头的中心轴线保持一 定的距离。
4、 如权利要求 3所述的面板涂胶装置， 其中， 所述吸入口与所述针头 中心轴线的距离设为可调。
5、 如权利要求 1所述的面板涂胶装置， 其中， 所述真空装置连接至一 有机气体排放管路。
6、 如权利要求 1所述的面板涂胶装置， 其中， 所述溶剂循环装置向所 述喷头提供有机溶剂的时间设为可调。
7、 一种面板涂胶装置， 包括注射筒， 其上连接有针头， 其中， 所述面 板涂胶装置还包括： 飞胶收集装置， 其包括： 真空吸入管， 所述真空吸入管 的一端设有吸入口及与所述真空吸入管相连通的喷头，其另一端连接有用以 存储有机溶剂的储液槽， 所述吸入口设置在所述针头的旁侧， 所述储液槽通 过一溶剂循环装置连接至所述喷头，所述储液槽中的有机溶剂通过所述溶剂 循环装置输送至所述喷头， 溶解由所述吸入口吸入的框胶； 所述溶解有框胶 的有机溶剂从所述真空吸入管输送至所述储液槽。
8、 如权利要求 7所述的面板涂胶装置， 其中， 所述喷头设置在靠近所 述吸入口的位置。
9、 如权利要求 8所述的面板涂胶装置， 其中， 所述吸入口位于所述针 头的涂布高度和其涂布完成高度之间，且设置与所述针头的中心轴线保持一 定的距离。
10、 如权利要求 9所述的面板涂胶装置， 其中， 所述吸入口与所述针头 中心轴线的距离设为可调。
11、 如权利要求 7所述的面板涂胶装置， 其中， 所述飞胶收集装置还包 括连接在所述储液槽上的用以为所述飞胶收集装置提供真空压力的真空装 置。
12、 如权利要求 11所述的面板涂胶装置， 其中， 在所述储液槽和所述 真空装置之间设有气液分离装置。
13、 如权利要求 11所述的面板涂胶装置， 其中， 所述真空装置连接至 一有机气体排放管路。
14、 如权利要求 7所述的面板涂胶装置， 其中， 所述储液槽连接有一注 液管路， 其上设有第一阀门。
15、 如权利要求 14所述的面板涂胶装置， 其中， 所述储液槽连接有一 排液管路， 其上设有第二阀门。
16、 如权利要求 7所述的面板涂胶装置， 其中， 所述溶剂循环装置向所 述喷头提供有机溶剂的时间设为可调。
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