WO2015058475A1

WO2015058475A1 - Frame sealant-coating device

Info

Publication number: WO2015058475A1
Application number: PCT/CN2014/070846
Authority: WO
Inventors: 罗忠云
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2013-10-21
Filing date: 2014-01-17
Publication date: 2015-04-30
Also published as: CN103506246A; CN103506246B

Abstract

Embodiments of the present invention disclose a frame sealant-coating device. The frame sealant-coating device comprises a fixing disc, an insertion tube, a driving device, a rotating disc, and multiple discharge tubes, all penetrating the fixing disc and being fixed on the fixing disc. The insertion tube is for inserting a liquid frame sealant. The driving device comprises a stator and a rotor extending out of the stator, and the rotor penetrates the fixing disc and can rotate relatively to the fixing disc. The rotating disc is fixed on and encompasses the rotor and is arranged opposite to the fixing disc. Each discharge tube comprises a main body and a nozzle extending out of the main body. The openings of the nozzles of the multiple discharge tubes are of different sizes. The multiple discharge tubes penetrate the fixing disc and are fixed on the rotating disc. The rotor rotates and drives the rotating disc to rotate relatively to the fixing disc, so that the insertion tube selectively connects to any one of the multiple discharge tubes.

Description

Frame sealant coating device

Technical field

The present invention relates to the field of sealant coating technology for liquid crystal display panels, and more particularly to a sealant coating device. Background technique

The liquid crystal display panel is formed by a thin film transistor (TFT) substrate and a color filter (CF) substrate, and is formed by injecting liquid crystal between two substrates by a One Drop Filling (ODF) process. In order to bond and seal the thin film transistor substrate and the color filter substrate to cut off the contact of the liquid crystal molecules with the outside and to ensure the display effect of the liquid crystal display panel, it is necessary to use a sealant. The sealant on the same liquid crystal display panel is distributed in areas such as a main seal, a loop seal, and a dummy seal.

When the thin film transistor substrate and the color film substrate are used for the box using the sealant, the sealant coating device is used to coat the sealant. The existing frame sealant coating device comprises a frame sealing hose and a nozzle, and the liquid frame sealant is temporarily stored in the frame sealing hose. During the application of the sealant, a pressure is applied to cause the sealant to flow out of the nozzle to complete the coating. However, the sealant in the same area of different liquid crystal display panels will have different widths, and the width of the sealant in different areas on the same liquid crystal display panel may also vary depending on the design space requirements. Since the width of the sealant depends on the diameter of the nozzle, it is necessary to apply different types of sealant coating devices to coat the sealant of different widths. Each type of sealant coating device has different Caliber nozzle. When applying the sealant of different widths from the last time, it is necessary to manually remove the previous sealant coating device and replace the sealant coating device corresponding to the width, which greatly reduces the size. The coating efficiency of the sealant is low, resulting in low production efficiency of the liquid crystal display panel.

Therefore, it is necessary to provide a sealant coating device capable of solving the above problems. Summary of the invention

In order to solve the above technical problem, an embodiment of the present invention provides a frame sealant coating device. The sealant coating device includes a fixing plate, an injection tube fixedly disposed in the fixing plate, a driving device, a turntable, and a plurality of injection tubes. The injection tube is used to inject a liquid sealant. The drive device includes a stator and a rotor extending from the stator, the rotor passing through the fixed disk and rotatable relative to the fixed disk. The turntable is fixedly sleeved on the rotor and opposite to the fixed disk. Each injection tube includes a body portion and a slave a nozzle extending from the body portion. Openings of the nozzles of the plurality of injection tubes have different sizes, and the plurality of injection tubes are fixedly disposed in the rotating disc, and the rotating of the rotor drives the rotating disc to rotate relative to the fixed disc to selectively eject the injection tube with the plurality of injection tubes Any one of the tubes is connected.

The fixing plate is provided with a first through hole and a second through hole. The first through hole is fixedly mounted with a bearing, and the rotor passes through the bearing and protrudes from the first through hole. The injection tube is fixed in the second through hole.

The injection tube is fixed in the second through hole by a snapping manner.

Wherein, the turntable is provided with a through hole and a plurality of stepped holes extending through the turntable, the rotor is fixedly disposed in the through hole, and the plurality of injection pipes are respectively fixedly mounted in the plurality of stepped holes, and the rotor rotates to drive the The turntable is rotated relative to the fixed disk such that the injection tube selectively communicates with any of the plurality of stepped holes.

The fixed disk includes a top surface and a bottom surface opposite to the top surface, the turntable includes an upper surface and a lower surface opposite to the upper surface, the injection tube includes opposite ends and ends, the top end from the top surface Extending, the end is flush with the bottom surface, and the upper surface is in contact with the bottom surface 4.

The injection tube is provided with an injection cavity penetrating the end, and the top end is provided with a through hole communicating with the injection cavity and for injecting a sealant into the injection cavity.

Each of the stepped holes includes a first receiving cavity and a second receiving cavity. The first receiving cavity and the second receiving cavity are sequentially arranged from the upper surface to the lower surface, and the size of the first receiving cavity is larger than the The size of the injection tube is fixed in the second receiving cavity, and the nozzle protrudes from the second receiving cavity.

The first through hole is located at a center of the fixed disk, and the through hole is located at a center of the turntable and aligned with the first through hole, and the plurality of stepped holes are distributed around the through hole.

The plurality of stepped holes are three, and the plurality of the plurality of injection pipes are three.

Wherein the openings of the nozzles of the three injection tubes are all circular, and the diameter of the opening ranges from

0.1mm-0.8mm „

The plurality of stepped holes are four, and the plurality of the plurality of exiting tubes are four.

The sealant coating device further includes a controller and a command input unit. The controller is electrically connected to the drive device and the command input unit, and the command input unit is used for the user to select a desired use. An injection tube for receiving a command from the command input unit and driving the drive to rotate until the selected injection tube is in communication with the injection tube.

The frame sealant coating device provided by the invention is fixedly mounted on the turntable with a plurality of injection tubes, the plurality of The opening of the nozzle of the injection tube has different sizes, and the rotation of the rotor drives the rotation of the rotary disk relative to the fixed disk to selectively connect the injection pipe that is fixed in the fixed disk to the injection tube required in the plurality of injection tubes. In order to coat different widths of the sealant by selecting different injection tubes, so as to avoid manually removing the previous sealant coating device, and then replacing the cover with another width sealant. The glue coating device improves the coating efficiency of the sealant, thereby improving the production efficiency of the liquid crystal display panel. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a partial cross-sectional view showing a sealant coating apparatus according to a first embodiment of the present invention. Figure 2 is a plan view showing the turntable in the sealant coating apparatus of Figure 1.

3 is a schematic plan view showing a turntable of a sealant coating apparatus according to a second embodiment of the present invention. 4 is a partial cross-sectional view showing a sealant coating apparatus according to a third embodiment of the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

Embodiment 1

Referring to Fig. 1, a sealant coating apparatus 100 according to a first embodiment of the present invention includes a fixed disc 10, an injection tube 20, a driving device 30, a turntable 40, and three injection tubes 50. The sealant coating device 100 is used for coating a frame sealant when a thin film transistor substrate and a color filter substrate are paired with a film.

The fixed disk 10 has a cylindrical structure including a top surface 12 and a bottom surface 14. The top surface 12 and the bottom surface 14 are respectively located on opposite sides of the fixed disk 10, and the top surface 12 is parallel to the bottom surface 14. The fixing plate 10 defines a first through hole 16 and a second through hole 18. The first through hole 16 and the second through hole 18 extend through the fixed disk 10, that is, the first through hole 16 and the second through hole 18 are from the top surface. 12 extends to the bottom surface 14. The first through hole 16 is located at a center of the fixed disk 10 , and the second through hole 18 is spaced apart from the first through hole 16 .

The injection tube 20 is fixed in the second through hole 18 by a snap fit, that is, the injection tube 20 is relatively fixed to the fixed disk 10. The injection tube 20 includes a top end 22 and a distal end 24, and the injection tube 20 is further provided with an injection chamber 26 extending through the end 24. The top end 22 extends from the top surface 12 and is secured to an external machine (not shown) that is flush with the bottom surface 14. The top end 22 defines a through hole 220 that communicates with the injection chamber 26 and is used to inject a sealant (not shown) into the injection chamber 26. In this embodiment, the injection tube 20 has a cylindrical structure, and the sealant is a UV-cured seal.

The drive unit 30 is a motor that includes a stator 32 and a rotor 34 extending perpendicularly from the stator 32. The stator 32 is fixed on an external machine (not shown), and a bearing 36 cooperating with the rotor 34 is fixedly mounted in the first through hole 16, and the rotor 34 passes through the bearing 36 and from the first The through hole 16 protrudes. When the rotor 34 is rotated, the fixed disk 10 does not rotate as the rotor 34 rotates.

Referring to Figure 2, the turntable 40 includes an upper surface 42 and a lower surface 44. The upper surface 42 and the lower surface 44 are respectively located on opposite sides of the turntable 40, and the upper surface 42 is parallel to the lower surface 44. The turntable 40 is provided with a through hole 46 and three stepped holes 48. The through hole 46 and the three stepped holes 48 extend through the turntable 40, that is, the through hole 46 and the three stepped holes 48 extend from the upper surface 42 to the lower surface 44. The through hole 46 is located at the center of the turntable 40, and the three stepped holes 48 are evenly distributed around the through hole 46, that is, the angle between the adjacent stepped holes 48 is 120 degrees. Each of the stepped holes 48 includes a first receiving cavity 482 and a second receiving cavity 484. The first receiving cavity 482 and the second receiving cavity 484 are sequentially arranged from the upper surface 42 to the lower surface 44. The size of the first receiving cavity 482 is larger than the size of the injection tube 20. In this embodiment, the first receiving cavity 482 and the second receiving cavity 484 are all circular holes, that is, the diameter of the first receiving cavity 482 is larger than the diameter of the injection pipe 20. The rotor 34 is fixedly disposed in the through hole 46 to fix the turntable 40 on the rotor 34. That is, when the rotor 34 rotates, the turntable 40 also rotates as the rotor 34 rotates. At this time, the upper surface 42 and the bottom surface 144 are completely in contact with each other, and when the turntable 40 rotates with the rotation of the rotor 34, the injection tube 20 can selectively interact with the three stepped holes 48. Any one is connected.

The three injection tubes 50 are fixedly mounted in the three stepped holes 48, respectively. Specifically, each of the injection tubes 50 includes a body portion 52 and a nozzle 54. The body portion 52 defines an injection cavity 520. The nozzle 54 extends from the body portion 52 and is in communication with the injection chamber 520. The body portion 52 is tightly engaged and fixed in the second receiving cavity 484 , and the nozzle 54 protrudes from the second receiving cavity 484 . The openings of the nozzles 54 of each of the injection tubes 50 have different sizes. In the present embodiment, the openings of each of the nozzles 54 are all circular, and the openings of the three nozzles 54 have a diameter ranging from 0.1 mm to 0.8 mm. When the rotor 34 rotates to rotate the turntable 40 relative to the fixed disk 10, the injection pipe 20 can selectively communicate with any one of the plurality of injection pipes 50.

When the sealant coating device 100 is used for the sealant coating, the drive device 30 is first energized, the rotor 34 is rotated, and the turntable 40 is rotated relative to the fixed disk 10 as the rotor 34 rotates. Until the desired size of the injection tube 50 communicates with the injection tube 20 to cut off the current through the driving device 30, the opening of the nozzle 54 of the injection tube 50 of this specification has a first size, for example, the opening has a diameter of 0.4. Mm. At this time, the injection chamber 26, the first receiving chamber 482, the ejection chamber 520, and the nozzle 54 are in communication. Then, the sealant is injected into the injection chamber 26 through the through hole 220. Then, a gas pressure is applied to the injection chamber 26 to sequentially flow the sealant rubber through the first receiving cavity 482 and the ejection cavity 520 to finally flow out from the nozzle 54 and coat the frame sealant having the first width on the liquid crystal display panel. on. When it is required to apply the sealant of different width from the previous time, the driving device 30 is again energized, the rotor 34 is rotated, and the turntable 40 is rotated relative to the fixed disk 10 as the rotor 34 rotates until the place The injection tube 50 of the required specification is in communication with the injection tube 20 to cut off the current passing through the driving device 30. The opening of the nozzle 54 of the injection tube 50 of such a specification has a second size, for example, the diameter of the opening is 0.35 mm. At this time, the injection chamber 26, the first receiving chamber 482, the ejection chamber 520, and the nozzle 54 are in communication. Then, the sealant is injected into the injection chamber 26 through the through hole 220. Then, a pressure is applied to the injection chamber 26 to cause the sealant to sequentially flow through the first receiving cavity 482 and the ejection cavity 520 to finally flow out from the nozzle 54 and apply a sealant having a second width to the liquid crystal display panel. on. And so on, it is possible to apply a variety of widths of the sealant on different areas of the liquid crystal display panel or to coat different widths of the sealant on different liquid crystal display panels. In this way, the manual sealing of the previous sealant coating device is manually removed, and the sealant coating device capable of coating another width sealant is replaced, thereby improving the coating efficiency of the sealant and thereby improving the coating efficiency. The production efficiency of the liquid crystal display panel.

Embodiment 2

Referring to FIG. 3, the sealant coating device 200 of the second embodiment of the present invention is different from the sealant coating device 100 of the first embodiment in that: the turntable 60 is provided with a through hole 66 and Four stepped holes 68. The through hole 66 is located at a center position of the turntable 60, and the four stepped holes 68 surround the The perforations 66 are evenly distributed, i.e., the angle between adjacent stepped holes 68 is 90 degrees. The sealant coating device 200 includes four injection tubes 70 fixedly disposed in the four stepped holes 68, and the nozzles of each of the injection tubes 70 have different opening diameters.

The working principle of the sealant coating device 200 in this embodiment is similar to the working principle and the achievable function of the sealant coating device 100 in the first embodiment, and details are not described herein. In addition, since the sealant coating device 200 of the present embodiment includes four injection tubes 70, and the nozzle openings of each of the injection tubes 70 have different diameters, the sealant coating device 200 can be coated one more. A wide range of frame sealant.

It can be understood that the number of the stepped holes is not limited to three in the first embodiment, and is not limited to four in the second embodiment. The number of the stepped holes may be two or more arbitrary numbers, as long as When the turntable is rotated, each stepped hole can be aligned with the second through hole on the fixed disk. Accordingly, the number of the injection tubes is not limited to three in the first embodiment and four in the second embodiment, and the number of the injection tubes may be any number of two or more.

Embodiment 3

Referring to FIG. 4, the sealant coating apparatus 300 of the third embodiment of the present invention is different from the sealant coating apparatus 100 of the first embodiment in that: the sealant coating apparatus 300 further includes A controller 80 and a command input unit 90. The controller 80 is electrically connected to the driving device 30 and the command input unit 90. The command input unit 90 is for the user to select the injection tube 50 to be used. The controller 80 is operative to receive commands from the command input unit 90 and to drive the drive unit 30 to rotate until the selected injection tube 50 is in communication with the injection tube 20. In this embodiment, the command input unit 90 is a touch human-machine operating device, and includes a touch input interface, and the touch input interface displays a plurality of sizes of the injection tubes 50 for the user to touch. select. Once the user selects the desired injection tube 50, the controller 80 controls the degree of rotation of the rotor 34 based on the selected information of the selected injection tube 50 to cause the selected injection tube 50 and the injection tube 20 to be selected. alignment.

The working principle of the frame sealant coating device 300 in this embodiment is similar to the working principle and the achievable function of the frame sealant coating device 100 in the first embodiment, and will not be described herein. Further, since the sealant coating apparatus 300 in the present embodiment automatically controls the degree of rotation of the rotor 34 by the controller 80 and the command input unit 90, it is easy to operate, which further improves the coating efficiency.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Claim

A sealant coating device, wherein the sealant coating device comprises:

Fixed disk

An injection tube fixedly disposed in the fixing plate, the injection tube is used for injecting a liquid sealant; the driving device comprises a stator and a rotor extending from the stator, the rotor passing through the fixing plate and capable of being fixed relative thereto Disk rotation

a turntable, the turntable is fixedly disposed on the rotor and opposite to the fixed disk; and

a plurality of injection tubes, each of the injection tubes includes a body portion and a nozzle extending from the body portion, the openings of the nozzles of the plurality of injection tubes having different sizes, and the plurality of injection tubes are fixedly disposed in the turntable Rotation of the rotor drives the turntable to rotate relative to the fixed disk to selectively communicate the injection tube with any of the plurality of injection tubes.

The frame sealant coating device according to claim 1, wherein the fixing plate is provided with a first through hole and a second through hole, and the first through hole is fixedly mounted with a bearing, the rotor Through the bearing and extending from the first through hole, the injection tube is fixed in the second through hole.

The frame sealant coating device according to claim 2, wherein the injection tube is fixed in the second through hole by a snap fit.

The frame sealant coating device according to claim 2, wherein the turntable is provided with a through hole and a plurality of stepped holes extending through the turntable, the rotor is fixedly disposed in the through hole, and the plurality of injection pipes are respectively Fixedly mounted in the plurality of stepped holes, the rotation of the rotor drives the turntable to rotate relative to the fixed disk to selectively connect the injection pipe to any one of the plurality of stepped holes.

The frame sealant coating device according to claim 4, wherein the fixed disk comprises a top surface and a bottom surface opposite to the top surface, the turntable includes an upper surface and a lower surface opposite to the upper surface, The injection tube includes opposite ends and ends from which the top end projects, the end being flush with the bottom surface, the upper surface being in contact with the bottom surface.

The frame sealant coating device according to claim 5, wherein the injection pipe is provided with an injection cavity penetrating the end, the top end is provided with a through hole, and the through hole is communicated with the injection cavity and is used for The injection into the moon is injected into: H 匡 glue.

The frame sealant coating device of claim 5, wherein each stepped hole comprises a first receiving cavity and a second receiving cavity, wherein the first receiving cavity and the second receiving cavity are from the upper receiving cavity The surface is arranged in order from the lower surface, the size of the first receiving cavity is larger than the size of the injection tube, and the body portion is fixed at the The nozzle protrudes from the second receiving cavity in the second receiving cavity.

The frame sealant coating device according to claim 7, wherein the first through hole is located at a center of the fixed disk, and the through hole is located at a center of the turntable and aligned with the first through hole, A plurality of stepped holes are distributed around the perforations.

The frame sealant coating device according to claim 8, wherein the plurality of stepped holes are three, and the plurality of injection tubes are three.

10. The sealant coating apparatus according to claim 9, wherein the openings of the nozzles of the three injection tubes are all circular, and the diameter of the openings ranges from 0.1 mm to 0.8 mm.

The frame sealant coating device according to claim 8, wherein the plurality of stepped holes are four, and the plurality of the plurality of injection pipes are four.

12. The sealant coating apparatus according to claim 1, wherein the sealant coating apparatus further comprises a controller and a command input unit, wherein the controller and the drive unit and the command input unit are both electrically The command input unit is for the user to select an injection tube to be used, and the processor is configured to receive a command from the command input unit and drive the drive device to rotate until the selected injection tube communicates with the injection tube.