TWI351323B - Method of dispensing paste using paste dispenser - Google Patents

Description

135*1323 IX. Description of the Invention: [Related Application Proposal] The present application claims priority to Korean Patent Application No. 10-2007-0134490, filed on Dec. 20, 2007, the disclosure of which is incorporated herein in its entirety. This article serves as a reference. BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method of applying a glue in a predetermined pattern using a paste dispenser. [Prior Art] When the 1^ flat panel display is clamped, in order to fit or seal the two substrates, the coating is applied in a predetermined pattern over the substrate by a dispenser. The dispenser includes a platform on which the substrate is placed, a coating head including a nozzle for glue, and a head support unit and/or a head support unit of the domain coating head. The ground coating head is horizontally moved by a different actuator in a direction perpendicular to the direction of movement of the head support unit. So the second board moves. The actuator is controlled by the controller. The information about the glue pattern information on the substrate is input to the dispenser, and the dispenser changes the nozzle position according to the information about the glue pattern to apply the glue on the base cup and thus forms a glue pattern on the substrate. When the 0, h (four) glue is formed, the continuous finishing glue pattern 1 must be formed to have the same thickness and width, for the reason of I. If the width and height of the glue in the joint portion are smaller than the rest of the glue _, the joint portion of the glue is the secret part of the start of the glue, and the end of the glue meets, the bonded substrates are bonded to each other. The adhesive strength will be weak and the sealing effect of the substrate will be deteriorated. At the same time, if the width and height of the glue portion are greater than the rest of the glue pattern, the glue may flow to the effective area of the screen, so that the space defined by the glue pattern i is reduced, or the glue may flow outside the substrate s. To make matters worse, when a predetermined amount of liquid crystal is filled into the space defined by the glue pattern 1, the liquid crystal corresponding to the space reduction amount may overflow or leak out from the space. Therefore, it is important to form the glue pattern 1 in such a manner that the width and height of the glue pattern 1 satisfy the predetermined size of the entire area of the glue pattern 1. SUMMARY OF THE INVENTION The present invention provides a method for coating a glue on a substrate in the following manner: 13513323 1351323 point 2 method '(4) The width and height of the case are the entire area of the coffee case, including the beginning of the beginning of the coating of the glue The part of the connection that ends with the end of the application. In the aspect of the invention of the present invention, a paste-coating machine is provided for coating, and when the substrate is lifted or lowered, the coating speed nozzle is changed relative to the horizontal displacement of the substrate (4), Applying the ϋ heavy material cloth to the end of the square money dance mouth = Tu 2: from the standby height to the first - coating height until ί and then maintaining the nozzle at the first coating height, the rise of the rising position, and When the nozzle reaches the first high and raised position, the nozzle is raised from the first coating height, and then the nozzle is at the second coating height: the first coating method is further included: when the nozzle reaches the pattern end position: = mouth coating height = again rising position #, increasing coating from the second coating height and then maintaining the nozzle at the third coating height until; mouth;: argon again rising position; and when the nozzle reaches the third highest household day Inch ' increases the coating height from the third coating height: position:: holds the nozzle at the fourth coating height "=finish: 8 gemin ίΓί he view simple in the back of the towel, and part will be It is easy to know, or can be learned by the practice of the present invention. It should be understood that the foregoing general description and the following detailed description DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in more detail with reference to the accompanying drawings which illustrate the exemplary embodiments of the invention. The implementations are not to be construed as limiting the exemplary embodiments set forth herein. More specifically, exemplary embodiments are provided to provide a more thorough disclosure and will fully convey the invention. In the drawings, the dimensions and relative sizes of the layers and regions may be exaggerated for clarity. The same reference numerals in the drawings represent similar elements. Figure 2 shows a dispensing machine 10 using a method of applying a glue according to an embodiment of the present invention. Referring to Figure 2, the dispenser 10 includes a frame 11, a platform 12, a head support unit 13, at least a head unit 21, and a controller (not shown). The platform 12 is disposed on the frame 11, and one of the frames 11 The substrate S supplied from the side is disposed on the platform 12. Slided on the γ axis: m: the first actuator (not the actuator (not shown in the direction of the coffee. The thousand 12 can be used by the second Extended to I3 It is placed above the platform 12. The head supporting unit 13 can be supported by the third actuating frame 13 by the frame 11. The head is swayed and slid (not shown) in the Y-axis direction. The mobile unit 21 can be supported on the head unit 13 and the dragon can slide to the head: • by the fourth actuator (not shown). The knotted nozzle shown has a discharge of glue, 22 of the coating item 23. A simple supply unit (not shown). - 24 has 24, supply a spray red line to the syringe as a self-nozzle.::24 Pressure. The pressure nozzle in the syringe 24 discharges the coating pressure of the glue in the syringe 24, and the amount of glue discharged from the spray 2 can be controlled by adjusting the coating pressure. The movement can be controlled by a money actuator (not shown). And move up and the position of _ 22. The fifth actuator may include a motor 10 and a lift (not shown) that is lifted by the motor 25. Here, the lifting portion can be fixed to the coating head 23. If the lifting portion is lifted by the motor 25, the coating head 23 fixed to the lifting portion can be lifted. When the riding head 23 is lifted, the height of the head 22 is changed. The distance detector 26 is provided adjacent to the nozzle 22, and the distance detector % measures the distance between the substrate S and the nozzle 22, and provides the measured distance value for control (4). The controller can control the fifth actuator to change the height of the nozzle 22 based on the measured distance value. The controller controls the first to fourth actuators to change the relative position of the substrate S to the nozzle 22 to a pre-determination based on information about the position of the platform 12, the head support unit 13, and the head unit 21. Set the location. Similarly, the controller controls the first to fourth actuators to change the coating speed of the nozzle 22 to the base S to the preset speed. Likewise, the controller controls the pneumatic supply unit to discharge a predetermined amount of glue from the nozzle 22. Referring now to Figures 4 and 5, a method of applying a glue according to an embodiment of the present invention by a dispenser 1 will be described. In this specification, a method of applying a glue in such a manner that the coating start position overlaps the coating end position will be described. A method of applying a glue in such a manner that the width and height of the overlapping portion of the coating start position and the coating end position are equal to the rest of the entire rubber pattern will be described. 1351323 The method of coating the coating gel of the second example was started to change the cloth speed and the change of the coating strength. ^ ±

When the value of the nozzle 22 reaches the coating start position Ld, the coating degree is lowered from the standby height HIT* to the first coating height and H2. Then, the nozzle 22 is maintained at the first coating height H2 until the nozzle 22 reaches the first-degree rising position Lh. In another example towel, the first height rising position Lhl can be set to the pattern starting position Ld2 or the pattern starting position Ld2. Any previous position. Thereafter, when the nozzle 22 reaches the first height rising position LM, the coating height is raised from the first coating height H2 to the second coating height H3, and then the nozzle 22 is maintained at the second coating height H3 ^ the second coating height H3 corresponds to the height at which the glue pattern on the substrate will be formed.

The pneumatic supply unit is activated prior to the first height rise position Lhl to apply a coating pressure to the glue in the nozzle 22. When the nozzle 22 reaches the second acceleration end position Lv2, the coating pressure is maintained at the preset pressure. In another example, the coating pressure is maintained at a preset pressure before the nozzle 22 reaches the second acceleration end position Lv2. When the nozzle 22 is moved to the first 12th acceleration end position Lv1 before the coating start position Ldi, the coating speed is increased from the zero speed to the first coating speed VI' and then maintained at the first coating speed V1. The coating speed can be increased from any position before the coating start position Ldl. Then, when the nozzle 22 is moved from the pattern start position Ld2 to the second acceleration end position Lv2, the coating speed is increased from the first coating speed ^^ to the second coating speed V2, and then maintained at the second coating speed. % : The second coating speed V2 is the speed of the remaining portion except for the county stack portion forming the egg case. The second acceleration end position Lv2 may be the same as the first height rising position Lhl. In this method, the nozzle 22 is moved relative to the substrate s (see Fig. 2) to apply glue to the substrate S, and the coating height, coating speed, and coating force are changed at the position of the coating (4). The coating speed will gradually increase from the standby height H1 T to the first coating height Η 2 ' before the detailed description of the coating start position Ldl. The nozzle 22 gradually tilts down in the direction of the coating glue. Until the nozzle 22 reaches the first coating height Η2 above the substrate s. Therefore, it is possible to avoid sticking the _ of the nozzle 22 to the substrate s. That is, the right nozzle 22 is directly discharged from the standby height to the first coating and H2 'the glue adhered to the discharge port of the nozzle 22 drops onto the substrate $135.1323' and thus the glue applied to the substrate S is subjected to the nozzle. 22 extrusion, making the glue hollow. However, if the nozzle 22 is inclined obliquely from the standby height H1 to the first coating height H2, the glue can be smoothly applied onto the substrate s without dropping onto the substrate S. Therefore, it is possible to prevent the width and the twist of the overlapping portion between the coating start position and the coating end position from becoming different from the rest of the entire rubber pattern. Then, when the nozzle 22 is moved from the coating start position Ld1 to the - - - height rising position Lhl, the nozzle 22 is maintained at the first coating height H2 which is lower than the second coating height H3. At this time, the application of the coating pressure to the glue in the nozzle 22 is started before the nozzle 22 reaches the rising position Lhl, and when the nozzle 22 reaches the second acceleration end position Lv2, the coating pressure reaches the preset pressure. When the nozzle 22 is moved from the coating start position Ld1 to the first acceleration end position Lv1, the coating speed is increased from the skirting speed to the first coating speed VI, and when the nozzle 22 reaches from the pattern starting position Ld2 At the second acceleration end position Lv2, the coating speed is increased from the first coating speed VI to the second coating speed V2. In this procedure, the width and height of the glue applied to the substrate S can be gradually increased from the coating start position Ldl until the glue reaches the pattern start position Ld2. The width and height of the glue applied between the coating start position Ld1 and the pattern start position Ld2 on the substrate S may be less than the glue to be applied to the second coating height H3. The shape of the glue applied between the coating start position Ld1 and the pattern start position Ld2 can be arbitrarily set by adjusting the coating height, the coating speed, and the coating force. Therefore, when the glue applied between the coating start position Ldi and the pattern start position Ld2 is overlapped and applied to the glue between the pattern end position and the coating end position Ld4 (see FIG. 5), the width and height of the overlap portion It can be the same as the rest of the entire pattern. If the first temperature rising position Lhl is too far ahead of the pattern starting position Ld2, the width and height of the glue applied between the first height rising position Lhl and the pattern starting position Ld2 may be greater than the coating height applied to the second coating height. H3 glue. Therefore, the first height rising position LM can be any position between the pattern start position Ld2 and the second acceleration end position Lv2. Fig. 5 shows a change in coating height, a change in coating speed, and a change in coating pressure with respect to the position of the nozzle 22 when the coating gel is terminated according to the coating gel method according to an embodiment of the present invention. As shown in Fig. 5, the nozzle 22 is maintained at the second coating height H3 until the nozzle 22 reaches the second height rising position Lh2. The second height rising position Lh2 may be equal to the pattern end position Ld3. Then, when the nozzle 22 is moved from the second height rising position Lh2 to the third height rising position B, the coating south degree is increased from the second coating height H3 to the third coating height H4' and then maintained at the third coating. Height H4. 1351323 Then 'when the nozzle 22 is moved from the third height to the coating end position Ld4, the coating height is increased from the third coating height to the fourth coating height H5, and then maintained at the fourth coating height ^Continuously, the coating height is increased from the fine coating height Hs to the standby height. When the coating height is changed as described above, the pneumatic supply unit is turned off at the first deceleration starting position Lv3 to lower the coating pressure. At the same time, the position at which the application force starts to decrease can be before or after the first start position W. Similarly, when the nozzle 22 reaches the first deceleration start position Lv3, the coating speed is lowered to the first coating speed V1. The first-deceleration start position W may precede the pattern end position Ld3. Then, when the nozzle 22 reaches the second deceleration start position lv4, the coating speed gradually decreases toward zero speed. The second deceleration start position ^ can be before the coating end position after passing through the pattern end position Ld3. The position at which the coating speed reaches zero speed may be any position after the end position Ld4 is applied by the coating, so that the nozzle 22 is moved to the standby height H1. A method in which a squeegee 22 is moved relative to the substrate S to coat the substrate on the substrate s, and the coating height, coating speed, and coating pressure are changed when the coating is terminated, will be described below. When the nozzle 22 is moved from the first-decrease start position Lv3 to the second deceleration start position Lv4, the coating speed is lowered from the first coating speed VI.

The speed and the side 'from the nozzle 22 reach the first deceleration starting position W, and the coating pressure is lowered, so that the amount of glue discharged from the nozzle 22 is gradually reduced by 0. At this time, when the nozzle 22 is turned to the second height, the position is raised. At Lh2, the coating height of the nozzle 22 is increased from the second coating height (five) to the third coating height H4' and then when the nozzle 22 reaches the third height rising position Lh3, the coating is equal to the second coating height H4. Increase to the fourth coating height H5. Therefore, the nozzle 22 is raised from the second coating height H3 to the third coating width H4, so that the width and height of the glue are gradually lowered. Thereafter, the nozzle 22 is raised from the third coating height H4 to the fourth coating height H5, so that the width and height of the glue are further lowered, and finally the supply of the glue from the nozzle 22 is stopped. The supply of glue from the nozzle 22 can be easily and smoothly stopped by increasing the height of the nozzle 22 between the pattern end position Ld3 and the coating end position Ld4 twice as compared with the case where the height of the nozzle 22 is increased once. If the glue flow from the nozzle 22 is stopped just after the height of the nozzle 22 is increased by the coating end position Ld4, the glue applied from the coating end position Ld4 to the position where the glue flow stops may be added to the entire glue pattern. Therefore, it may occur that the width and the degree of the overlap of the coating start position and the coating end position become different from the rest of the entire rubber pattern. However, according to the current embodiment of the present invention, since the degree of the nozzle 22 is increased twice, the nozzle 22 reaches the coating end position.

For example, Ld4 stops the flow of glue from the nozzle 22, thereby avoiding such errors. The shape of the glue applied between the pattern end position Ld3 and the application end position Ld4 can be determined by adjusting the coating height, the coating speed, and the coating pressure. Therefore, when the glue applied between the pattern end position and the coating end position Ld4 is overlapped and applied to the glue between the coating start position Ld1 and the pattern start position Ld2, the width and height of the overlapping portion may be the same as The whole __ remaining miscellaneous. As a result, the width and height of the entire pattern can be made uniform, including the overlap of the starting point of the beginning of the application of the glue to terminate the end of the coating glue. As described above, according to the embodiment of the present invention, the coating start portion, the coating portion, and the shape of the stopper portion can be set to a desired shape by changing the coating height, the coating speed, and the coating strength. Therefore, when the coating start position is the weight of the coating end position, the width and height of the overlapping portion are equal to the rest of the entire pattern. As a result, the width and height of the neat pattern can be made to include the overlap of the starting point of the beginning of the coating of the glue to terminate the overlap of the line of the coating glue. The present invention has been described with reference to the specific exemplary embodiments, and it should be understood that various modifications and changes can be made without departing from the spirit and scope of the invention. °. Accordingly, the invention is intended to cover the modifications and alternatives 〃 [Simple description]

The accompanying drawings are included to provide a further understanding of the invention, 1 is a perspective view of a glue pattern applied to a substrate; FIG. 2 is a perspective view of a dispenser in accordance with the present invention; FIG. 3 is a perspective view of the head unit shown in FIG. 4 shows that according to the present invention, the root coating method starts.

When the glue is applied, the coating height of the nozzle position is changed, the coating speed is changed, and the coating pressure is changed; and FIG. 5 shows that when the coating glue is terminated according to the coating method according to the embodiment of the present invention, The coating height of the nozzle position is changed, the coating speed is changed, and the coating pressure is changed. [Main component symbol description] 1 glue pattern 10 dispenser 19 1351323 11 frame 12 platform 13 head support unit 21 head unit 22 nozzle 23 coating head 24 syringe 25 motor 26 distance detector - S substrate ON open OFF HI, H2, H3, H4, H5 height VI, V2 speed

Ldl, Lvl, Ld2, Lhl, Lv2, Lv3, Ld3, Lh2, Lh3, Lv4, Ld4 positions

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Claims (1)

1351323 X. Patent application scope: h: kind of glue dispenser coating glue on the substrate, by changing or lowering the nozzle with respect to the substrate to change the height of the nozzle and releasing the glue by the coating pressure, Coating start = the way the cloth is placed at the end of the process, the method of applying the glue comprises: duplexing the nozzle from the standby-to-stand height to - the first to the beginning of the coating, and then maintaining the nozzle: Applying the south degree until the nozzle reaches the "first-height height rising position", and when the nozzle mouth is turned over at the first-height level, the nozzle height is raised to - the second coating height, and then: the nozzle is maintained At the second coating height. 2. The method of claim 1, further comprising: when the nozzle moves from the coating start position to a pattern start bit speed =: Γ = position, increasing the coating speed from a zero speed a coating speed; and a speed of the second plus one 'set' of the cloth after the speed line reaches the starting position of the pattern is increased from the first coating speed to the coating speed, and then the coating speed is maintained at The method of claim 2, wherein the first height-increasing position is 21 1351323 between the pattern start position and the second acceleration end position. The method of 2, wherein the applying the coating speed from the zero speed comprises increasing the coating speed in such a manner that the nozzle gradually slopes from the standby height to the coating start position in the direction of the coating glue. 5. The method of claim 2, further comprising applying the coating pressure to reach a predetermined pressure at or before the nozzle reaches the second acceleration end position before the nozzle reaches the first π degree rising position. Hold the predetermined pressure. 6. If please The method of any one of clauses 1 to 5, further comprising: maintaining the nozzle in the second when the nozzle object - (4) terminates the position or when the second height rises after the end of the pattern end position a coating height; when the nozzle reaches the second height rising position, increasing the coating height from a coating south degree to a third coating height, holding the nozzle at the third coating height until the nozzle reaches a height rise Positioning; and inversely, when the nozzle reaches the third height rising position, increasing the coating height from a coating height to a fourth coating height, the ending position, the spraying at the fourth coating height Until the nozzle reaches-coating 22 丄7. The method of claim 6, further comprising: reducing the coating speed by one of the first stop before the start position of the pattern reaches the end position of the pattern, The cloth speed reaches the Le-coating speed; and when the nozzle reaches a one-thick position after passing the pattern end position, the coating speed is decreased from the first coating speed, and the coating nozzle reaches the coating end position. Time or After the nozzle passes the position, the coating speed reaches a zero speed of 8: the method further includes reducing the coating pressure when the nozzle reaches the first-initial position. 9. A method of utilizing the branch from Bu Na When the glue is released by changing the coating: final =: pressure when the nozzle is horizontally moved relative to the substrate, the glue is applied to the substrate in a coating starting position ί=, the method comprising: When the pattern is terminated or when the second height-increasing position is terminated by the pattern, the nozzle is raised from the second height-increasing position to the third height-up position, and the nozzle is raised from the second coating height to a third coating height 'and then maintaining the nozzle at the third coating height y 23 and the 対 _ third height rising position, self-spraying; = applying a coating height to - a fourth coating height, and maintaining the Stop the brother four coating height straight _ nozzle reach - coating stop bit Ϊ́α, as described in the above, further comprising: the first deceleration of the stop nozzle before reaching the end position of the pattern, lowering the coating speed until the coating position reaches a coating speed; and J When the nozzle reaches the second plus-: position after the end position, the coating speed is decreased from the first coating speed, :: when the coating end position is reached or when the nozzle passes After the coating is stopped, the coating speed is reduced to a zero speed. The method of item 10 further includes reducing the coating pressure when the nozzle reaches the first deceleration start position. twenty four