CN114296276A - LCD liquid crystal linear layering glue filling sealing device and sealing method - Google Patents
LCD liquid crystal linear layering glue filling sealing device and sealing method Download PDFInfo
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- CN114296276A CN114296276A CN202111370615.XA CN202111370615A CN114296276A CN 114296276 A CN114296276 A CN 114296276A CN 202111370615 A CN202111370615 A CN 202111370615A CN 114296276 A CN114296276 A CN 114296276A
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Abstract
The invention discloses a linear layering glue pouring sealing device and a sealing method for Liquid Crystal Display (LCD), and relates to the technical field of liquid crystal pouring gate sealing glue. In the invention: an inner rubber frame extension plate is fixedly arranged at the inner side of the crystal filling opening, and a rubber filling space is formed between the outer opening of the crystal filling opening and the two side ends of the inner rubber frame extension plate; a circle of inner afflux bulge is arranged on the inner wall surface of the crystal filling opening, the inner afflux bulge is provided with a afflux slope surface facing to the opening direction of the crystal filling opening, and the inner afflux bulge forms a afflux channel around the center area of the circle; a shunting bulge is arranged on one side surface of the inner rubber frame extension plate facing the crystal filling opening; the upper stream of the glue injection needle tube is connected with a glue injection control mechanism for controlling the glue injection on-off and the glue injection rate of the glue injection needle tube, and the glue injection control mechanism is connected with a main processing control device through an electric control and signal circuit. The invention improves the quality effect of the sealant pouring seal, reduces the risk of the sealant penetrating into the edge area of the liquid crystal, and ensures the edge liquid crystal display effect of the LCD.
Description
Technical Field
The invention relates to the technical field of liquid crystal pouring opening sealing glue, in particular to a linear layering pouring glue sealing device and a sealing method for Liquid Crystal Display (LCD).
Background
The production flow of the liquid crystal glass is divided into a front section, a middle section and a rear section, wherein the work of the middle section is as follows: and (3) cutting the two pieces of liquid crystal glass after being bonded, putting the cut liquid crystal glass into a vacuum crystal filling device to fill liquid crystal, and sealing the opening by using sealing glue after the crystal filling is finished to ensure that the filled liquid crystal cannot flow out.
When the sealing compound is injected into the actual liquid crystal filling opening, the rapid injection may cause the injection amount to be too large or cause the extrusion of the sealing compound at the inner side by more and more sealing compounds outside the liquid crystal filling opening in the injection process, and the small amount of the sealing compound at the inner side part permeates into the edge area of the liquid crystal, thereby affecting the display effect of the LCD.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a linear layering glue filling and sealing device and a sealing method for LCD liquid crystal, so that the quality effect of glue filling and sealing is improved, the risk that sealing glue penetrates into the edge area of the liquid crystal is reduced, and the edge liquid crystal display effect of the LCD is ensured.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a linear hierarchical glue filling and sealing device for LCD (liquid crystal display), which comprises an outer frame glue and a crystal filling opening positioned on the outer frame glue, wherein a glue filling needle tube for filling sealing glue is arranged at the position of an opening at the outer side of the crystal filling opening; a circle of inner afflux bulge is arranged on the inner wall surface of the crystal filling opening, the inner afflux bulge is provided with a afflux slope surface facing to the opening direction of the crystal filling opening, and the inner afflux bulge forms a afflux channel around the center area of the circle; a shunting bulge is arranged on one side surface of the inner rubber frame extension plate facing the crystal filling opening; the upper stream of the glue injection needle tube is connected with a glue injection control mechanism for controlling the glue injection on-off and the glue injection rate of the glue injection needle tube, the glue injection control mechanism is connected with a main processing control device through an electric control and signal line, and a main processing controller is configured in the main processing control device.
As an optimal technical scheme of the linear layering glue filling and sealing device for the LCD liquid crystal, the invention comprises the following steps: and if the width of the glue outlet of the glue injection needle tube is D and the width dimension of the confluence channel is L, the width D of the glue outlet of the glue injection needle tube is larger than the width L of the confluence channel.
As an optimal technical scheme of the linear layering glue filling and sealing device for the LCD liquid crystal, the invention comprises the following steps: the center position of the flow dividing bulge is right opposite to the confluence channel in the center area of the inner confluence bulge.
As an optimal technical scheme of the linear layering glue filling and sealing device for the LCD liquid crystal, the invention comprises the following steps: the cross section of the inner confluence bulge is semicircular or any geometrical shape with a bevel edge; the cross section of the flow dividing protrusion is any geometric shape with a group of symmetrical oblique edges.
As an optimal technical scheme of the linear layering glue filling and sealing device for the LCD liquid crystal, the invention comprises the following steps: the glue injection control mechanism is connected with a displacement mechanism through a mechanical shaft rod, and the main processing control device drives and controls the connection displacement mechanism.
As an optimal technical scheme of the linear layering glue filling and sealing device for the LCD liquid crystal, the invention comprises the following steps: the main processing control device is provided with a delay module, and the delay module is connected with the main processing controller through a signal line.
As an optimal technical scheme of the linear layering glue filling and sealing device for the LCD liquid crystal, the invention comprises the following steps: the glue injection control mechanism is provided with a glue injection switch for controlling the on-off of glue injection and a flow velocity sensor for sensing and monitoring the glue injection rate in real time.
The invention relates to a linear layering glue filling and sealing method for LCD liquid crystal, which comprises the following steps:
(1) the main processing controller drives the displacement mechanism to move, and the glue injection needle tube is aligned to the position of the crystal filling opening to be filled with glue.
(2) The main processing controller drives the glue injection control mechanism to open the glue injection switch, and meanwhile, the flow velocity sensor of the glue injection control mechanism is opened to start glue injection to the inner side of the crystal filling port at a certain speed.
(3) The time delay module starts time delay action when the main processing controller drives the glue injection switch to be opened.
(4) The main processing controller acquires the glue injection rate sensed and monitored by the flow velocity sensor in real time, when the real-time glue injection amount injected into the glue injection space by the glue injection needle tube reaches the initial-section inner layer injection amount, the main processing controller acquires the delay state of the delay module, and controls the on-off of a glue injection switch of the glue injection control mechanism according to the delay state of the delay module; firstly, if the delay module finishes the delay action and the delay time is over, the glue injection control mechanism continues to inject the residual full injection amount into the glue injection space through the glue injection needle tube; if the delay module does not finish the delay action and the delay time continues, the glue injection control mechanism closes the glue injection switch, the glue injection needle tube stops injecting glue into the glue injection space until the delay module finishes the delay action, and the first action is carried out.
As an optimized technical scheme of the linear layering glue filling and sealing method of the LCD liquid crystal, the invention comprises the following steps: setting the total glue volume of glue filling space as Q and the inner layer injection amount of the initial section as QCThe remaining full injection amount is QyIf the total volume Q of the potting adhesive is QC+Qy(ii) a If the glue injection control mechanism controls the glue injection rate of the glue injection needle tube to be V and the delay time of the delay module to be T, the glue injection rate V is larger than or equal to QC/T。
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the inner rubber frame extension plate is arranged on the inner side of the crystal filling opening, a glue filling space which can be used for smoothly filling liquid crystal and sealing glue during sealing is formed between the crystal filling opening and the crystal filling opening, and the inner rubber frame extension plate is provided with the shunt protrusion on the circle of vertical inner confluent protrusion in the crystal filling opening, so that the sealing glue can be uniformly dispersed after entering the glue filling space, and the quality effect of glue filling and sealing is improved;
according to the invention, when the sealing glue is injected into the crystal filling opening and the glue filling space, the glue is injected linearly and repeatedly, the initial primary-section inner layer injection is performed, and after the initial injection of the inner layer glue is ensured to have a surface dry state after time delay, the injection of the residual sealing glue is continuously completed, so that the risk of the sealing glue permeating into the edge area of the liquid crystal is reduced, and the edge liquid crystal display effect of the LCD is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a linear hierarchical glue-filling seal of LCD liquid crystal according to the present invention;
FIG. 2 is a schematic view of another structure of the LCD liquid crystal linear layering glue filling seal of the present invention;
FIG. 3 is a schematic diagram of a system control logic structure of the LCD liquid crystal linear hierarchical glue filling and sealing device according to the present invention;
wherein: 1-outer frame glue; 2-crystal filling opening; 3-an inner confluent lobe; 4-a sink channel; 5-converging slope surface; 6-extension plate of inner rubber frame; 7-a flow-splitting protrusion; 8-glue pouring space; 9-glue injection needle tube; 10-glue injection control mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to FIG. 1 and FIG. 3, the inner layer injection amount Q in the initial stageCThe method is to inject a certain amount of sealing compound into the glue filling space 8, and the injected amount can ensure that the blank areas at the two side ends of the inner rubber frame extension plate 6 are just covered (for example, the blank areas at the left and right ends of the inner rubber frame extension plate 6 in fig. 1, which are flush with the outer frame glue 1, are completely covered)]So that the remaining glue-pouring space 8 is isolated from the liquid crystal that has been poured in. The glue injection amount can be obtained only by a large number of tests and observations, and is certainly related to the glue injection rate and the structural characteristics of the glue injection space 8, and in the invention, multiple dynamic tests and real-time observations can be carried out on the structural characteristics of the glue injection space 8 designed by the invention or similar to the structural characteristics of the glue injection space 8 designed by the invention under the condition of the conventional glue injection rate of the conventional glue injection needle tube 9.
For example, in the experimental observation of multiple initial stage inner layer injection amount, the volume parameter reaching the initial stage inner layer injection amount is { Q1 Q2 Q3 ... QnGet the mean value of the test parameters after normal parameter analysis
The standard deviation is sigma, then the initial stage inner layer injection amount can be set as
This is because
The interval covers a normal probability distribution of 99.73% + 0.27%/2 ═ 99.865%.
Remaining full injection QyTo better explain, the inner layer injection quantity Q of the initial section is completedCAnd then, the glue injection space remained in the glue injection space 8 is the remained full injection amount.
Example two
Referring to fig. 1 and 2, the inner confluent protrusion 3 may be a semicircular structure or a trapezoidal structure in cross section, and when the glue injection needle tube 9 injects the potting adhesive into the die filling opening 2, even if the glue injection needle tube 9 is not completely opposite to the confluent channel or the flow dividing protrusion 7, the potting adhesive can enter the potting adhesive space 8 from the confluent slope 5 and "divide" into two on the flow dividing protrusion 7 and advance towards two sides of the flow dividing protrusion 7, so that the phenomenon that the injected potting adhesive is unevenly accumulated is avoided.
The flow distributing bulge 7 in fig. 1 is in a horn shape with a section similar to normal distribution, the flow distributing bulge 7 in fig. 2 is in an isosceles triangle shape with a very simple section, and no matter which shape is adopted, certain obliquity and symmetry are required.
EXAMPLE III
In the present invention, the LCD pouring sealant takes KD6280 as an example, and is a single-component uv-curable LCD pouring sealant.
The performance of the glue solution before curing:
a.
A.
The.
1.04 of specific gravity (@25 ℃).
A cure speed (surface dry/full cure..).. 10sec/30 sec;
description of curing: the curing speed varies depending on the intensity of the ultraviolet lamp, the light distance, the spectral distribution of the light source, the exposure time, and the conditions of the light transmittance of the substrate.
In the invention, the delay time T of the delay module is 10sec, when glue injection of the initial stage inner layer injection amount is performed, the glue injection is completed within 10s, from the start of glue injection to the completion of the initial stage inner layer injection amount, the glue injection of the initial stage inner layer injection amount starts to be surface-dried, after 10s, the pouring sealant injected first finishes surface drying, and when the pouring sealant is continuously injected into the pouring space 8, the glue injected first does not permeate towards the liquid crystal side.
Example four
The linear hierarchical encapsulating glue structure and the process can also control the size of the inner glue frame extension plate 6 of TN products such as watches, forehead temperature gun liquid crystal glass and the like, ensure the crystal filling speed of liquid crystal, simultaneously prevent the sealing glue from excessively permeating into the interior of a seal when the seal is used for sealing after the crystal filling is finished, ensure the pattern display of the liquid crystal glass to be normal, and ensure the yield of the products in the crystal filling and sealing stages.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a linear layering encapsulating closing device of LCD liquid crystal, includes that outer frame glue (1) and be located brilliant mouthful (2) of irritating on outer frame glue (1), the outside open position department of irritating brilliant mouthful (2) disposes and is used for pouring into injecting glue needle tubing (9) of sealing compound, its characterized in that:
an inner rubber frame extension plate (6) is fixedly arranged at the inner side of the crystal filling opening (2), and a glue filling space (8) is formed between an outer opening of the crystal filling opening (2) and two side ends of the inner rubber frame extension plate (6);
a circle of inner confluence bulges (3) are arranged on the inner wall surface of the crystal filling port (2), confluence slopes (5) facing the opening direction of the crystal filling port (2) are arranged on the inner confluence bulges (3), and confluence channels (4) are formed in the center areas of the circle of inner confluence bulges (3);
a shunting bulge (7) is arranged on one side surface of the inner rubber frame extension plate (6) facing the crystal filling opening (2);
the glue injection control device is characterized in that the upstream of the glue injection needle tube (9) is connected with a glue injection control mechanism (10) used for controlling the glue injection on-off and the glue injection rate of the glue injection needle tube (9), the glue injection control mechanism (10) is connected with a main processing control device through an electric control and signal line, and a main processing controller is configured in the main processing control device.
2. The linear layering glue filling and sealing device of the LCD liquid crystal according to claim 1, characterized in that:
and if the width of the glue outlet of the glue injection needle tube (9) is D and the width dimension of the confluence channel (4) is L, the width D of the glue outlet of the glue injection needle tube (9) is larger than the width L of the confluence channel (4).
3. The linear layering glue filling and sealing device of the LCD liquid crystal according to claim 1, characterized in that:
the central position of the flow dividing bulge (7) is right opposite to the confluence channel (4) in the central area of the inner confluence bulge (3).
4. The linear layering glue filling and sealing device of the LCD liquid crystal according to claim 1, characterized in that:
the cross section of the inner afflux bulge (3) is semicircular or any geometrical shape with a bevel edge;
the cross section of the flow dividing protrusion (7) is any geometric shape with a group of symmetrical oblique edges.
5. The linear layering glue filling and sealing device of the LCD liquid crystal according to claim 1, characterized in that:
the glue injection control mechanism (10) is connected with a displacement mechanism through a mechanical shaft rod, and the main processing control device drives and controls the displacement mechanism.
6. The linear layering glue filling and sealing device of the LCD liquid crystal according to claim 1, characterized in that:
the main processing control device is provided with a delay module, and the delay module is connected with the main processing controller through a signal line.
7. The linear layering glue filling and sealing device of the LCD liquid crystal according to claim 1, characterized in that:
the glue injection control mechanism (10) is provided with a glue injection switch for controlling the on-off of glue injection and a flow velocity sensor for sensing and monitoring the glue injection rate in real time.
8. A linear layering glue filling and sealing method for LCD liquid crystal is characterized in that the linear layering glue filling and sealing device for the LCD liquid crystal according to any one of claims 1 to 7 is adopted, and comprises the following contents:
(1) the main processing controller drives the displacement mechanism to move, and the glue injection needle tube (9) is aligned to the position of the crystal filling opening (2) to be filled with glue;
(2) the main processing controller drives the glue injection control mechanism (10) to open the glue injection switch, and meanwhile, a flow velocity sensor of the glue injection control mechanism (10) is opened to start glue injection to the inner side of the crystal injection port (2) at a certain speed;
(3) the time delay module starts time delay action when the main processing controller drives the glue injection switch to be opened;
(4) the main processing controller acquires the glue injection rate sensed and monitored by the flow velocity sensor in real time, when the real-time glue injection amount of the glue injection needle tube (9) to the glue injection space (8) reaches the initial-section inner layer injection amount, the main processing controller acquires the delay state of the delay module, and controls the on-off of a glue injection switch of the glue injection control mechanism (10) according to the delay state of the delay module;
firstly, if the delay module finishes the delay action and the delay time is over, the glue injection control mechanism (10) continues to inject the residual full injection amount into the glue injection space (8) through the glue injection needle tube (9);
if the delay module does not finish the delay action and the delay time continues, the glue injection control mechanism (10) closes the glue injection switch, the glue injection needle tube (9) stops injecting glue into the glue injection space (8) until the delay module finishes the delay action, and the first action is carried out.
9. The linear layering glue filling and sealing method for the LCD liquid crystal according to claim 8, characterized in that:
the total volume of the glue filling space (8) is Q, and the injection quantity of the inner layer of the initial section is QCThe remaining full injection amount is QyIf the total volume Q of the potting adhesive is QC+Qy；
If the glue injection control mechanism (10) is arranged to control the glue injection rate of the glue injection needle tube (9) to be V and the delay time of the delay module to be T, the glue injection rate V is larger than or equal to QC/T。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114967193A (en) * | 2022-06-08 | 2022-08-30 | 蚌埠市高远光电有限公司 | LCD liquid crystal display seals transfer equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114967193B (en) * | 2022-06-08 | 2023-04-25 | 蚌埠市高远光电有限公司 | LCD seals transfer equipment |
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