KR100811231B1 - a head arranging apparatus for an inkjet printing equipment - Google Patents

Abstract

The present invention relates to an inkjet printing apparatus used for manufacturing a substrate of a large display apparatus, and more particularly, to a head alignment apparatus of an inkjet printing apparatus, and includes a bridge reciprocating to one side on an upper portion of a stage, An inkjet printing apparatus having a plurality of heads for ejecting ink while reciprocating along, the inkjet printing apparatus comprising: a support frame coupled to the bridge to move in a rotational and linear direction and to which the plurality of heads are coupled in one direction; And head alignment means for causing the plurality of heads to be independently moved in the X, Y and rotation directions, respectively.

Accordingly, regardless of the number of heads mounted on the inkjet printing equipment, a large number of heads can be constantly aligned, which makes the manufacturing of a large display substrate more simple and accurate.

Inkjet Printing Equipment, Inkjet Patterning Equipment, Heads, Nozzles, Alignment

Description

Head arranging apparatus for an inkjet printing equipment

1 is a schematic perspective view showing a first embodiment of the present invention.

2 shows the main part of the present invention,

   Figure 2a is an exploded perspective view of the main part,

   2B is an exploded perspective view of the main portion.

3 is a plan view of the head alignment means according to the first embodiment of the present invention;

4 is a front view of the head alignment means according to the first embodiment of the present invention.

5 is a schematic plan view showing a state of use of the present invention.

6 is a plan view of a head alignment means according to a second embodiment of the present invention;

7 is a schematic front view of a main portion showing the third embodiment of the present invention.

8 is a schematic plan view of a main portion showing a fourth embodiment of the present invention;

※ Explanation of codes for main parts of drawing

1: stage 2: bridge

10 head 11 nozzle

20, 20a, 20b, 20c: support frame

30: head alignment means

   31: bonding bracket 32: support wall

   321: receiving groove 322: extension wall

   33: 1st adjusting screw 34: 1st supporting spring

   35: second adjusting screw 351: bevel gear

   36: second support spring 37: adjustment knob

   371: opponent bevel gear

40: external control means

   41: outer support bracket 42: outer support wall

   43: external adjustment screw 44: external support spring

50: gap adjusting means 51: support bar

The present invention relates to an inkjet printing equipment used for manufacturing a substrate of a large display device, and more particularly, to a head alignment device of an inkjet printing equipment.

In order to improve productivity in the flat panel display industry recently, as the substrate sizes of PDP and LCD have increased, existing photo processes using masks have started to show limitations, and inkjet patterning which can replace the existing photo processes while enabling a drastic process shortening. Technology is required.

Inkjet patterning technology is a technique of forming a pattern directly on a substrate by spraying a fine ink drop at a desired position without a separate exposure process using a mask. Since the pattern is directly described, a conventional photo process including exposure is performed. There is no need, and the process can be greatly shortened.

Inkjet printing devices will be used for the production of large displays over the 7th generation, and dozens to hundreds of heads need to be attached to one inkjet printing device in order to reduce the processing time. In addition, if the inkjet printing system is used to print a color filter having three colors of red (R), green (G), and blue (B), dozens of heads need to be used for each color, but the process time is shortened. This can lead to increased productivity.

In order for the ink ejected from the head to be applied to the desired position accurately when using the inkjet printing apparatus, the nozzle positions of the head must be at the corresponding dot positions when ejecting the ink. Will lose. Therefore, when using a plurality of heads, a step of correcting a minute error occurring when the head support and the head are attached or when the head is manufactured is essential.

Until now, a method of finely arranging dozens to hundreds of heads has not been proposed, and in Korean Laid-Open Patent Publication 2005-75980, a method of finely arranging two heads capable of relative movement between one fixed head, that is, a head Only how to sort the three is shown.

Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, the object of the head alignment device to be able to align the positions of the heads of the inkjet printing apparatus in which a plurality of heads are combined in one direction, respectively individually In providing.

In addition, an object of the present invention is to align the X, Y direction and rotation direction alignment of the head with a simple configuration.

In addition, it is an object of the present invention to be easily adjusted in all directions from one side of the head.

In addition, an object of the present invention is to allow the head to be easily moved when the position of the head is aligned while being firmly fixed to the inside of the support wall.

It is also an object of the present invention to conveniently adjust the position of the entire head.

In addition, an object of the present invention is to easily adjust the spacing between each support frame when a plurality of support frames are installed in parallel.

In addition, an object of the present invention is to adjust the current to easily adjust the interval between the support frame.

In order to achieve the above object, the present invention is provided with a bridge reciprocating to one side in the upper portion of the stage, and provided with a plurality of heads for ejecting ink while reciprocating along the bridge, the bridge is rotated and straight An inkjet printing apparatus comprising a support frame movably coupled and a plurality of heads coupled in one direction, and a head alignment means for allowing the plurality of heads coupled to the support frame to be independently moved in X, Y and rotation directions, respectively. In the head aligning device, the head aligning means: a square having a coupling bracket which is respectively fixed to the upper side of the head and protruding to the lower surface of the support frame, the receiving groove into which the upper end of the coupling bracket is inserted And a support wall spaced apart from and coupled to one side of the support wall, and an inner end of the coupling bracket A pair of first adjustment screws for supporting the side; and first support springs provided opposite to the first adjustment screws, each end of which supports an inner surface of the support wall and an inner surface of the coupling bracket; A second adjusting screw fastened to a support wall perpendicular to the adjusting screw, the inner end supporting the outer surface of the coupling bracket; and the second adjusting screw facing the second adjusting screw, both ends of which are respectively disposed in the supporting wall. A second support spring for supporting the side surface and the inner surface of the coupling bracket, wherein the support wall to which the first adjustment screw is fastened extends to the second adjustment screw side, and the second adjustment screw is formed. A bevel gear is formed at the outer end to protrude out of the support wall, and an outer end is formed at the inner end and a mating bevel gear is engaged with the bevel gear at the inner end and is rotatably inserted into the extension wall. Characterized in that the equipped with a control knob.

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In addition, the coupling bracket is characterized in that attached to the inner side of the support wall by a magnetic force.

In addition, an outer support bracket coupled to the lower side of the bridge and moving along the bridge is formed, and an outer support wall into which the support frame is inserted is formed on a lower surface of the outer support bracket, and on one side of the outer support wall. An external adjustment screw is fastened and the inner end is supported on the support frame, the external support spring is provided to face the external control screw and both ends support the inner surface of the outer support wall and the inner surface of the support frame, respectively. It is characterized in that the outer control means provided further.

In addition, the support frame is inserted into a plurality of parallel to the inner side of the outer support wall, characterized in that the gap adjusting portion is formed in the space between the support frame.

In addition, the spacing control unit; It is formed of a nickel-titanium alloy is supplied with current, characterized in that formed on the support bar is fixed to both ends of the adjacent support frame.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing a first embodiment of the present invention, as shown in the present invention is a stage (1) while both ends are coupled to the side of the stage (1) to the upper side of the stage (1) to which the large display device is fixed; There is provided a bridge (2) to move up and down along the), coupled to the bridge (2) is provided with a plurality of heads (10) for injecting ink to the display device while moving left and right along the bridge (2) In the inkjet printing apparatus, a plurality of heads 10 coupled to the support frame 20 and the support frame 20 are rotatably and linearly coupled to the bridge 2 while allowing the plurality of heads 10 to be coupled in one direction. ) And head alignment means 30 for aligning the positions by moving independently of each other so that accurate printing is performed.

The support frame 20 is to allow the plurality of heads 10 are integrally moved along the bridge 2 while the plurality of heads 10 are aligned and fixed in a row, and spaced apart from the upper side of the stage 1. It is installed to face the stage 1 so that the ink is smoothly sprayed through the head 10.

The head aligning means 30 is to align the plurality of heads 10 coupled to the support frame 20 in the X, Y direction and the rotation direction, respectively, repeated use and vibration or shock and detachment of the head, etc. By moving the respective head 10 when the position of the head 10 is out of position by the correct position to be accurate printing, even when using a plurality of head 10 when printing a substrate of a large display device Easy to precisely adjust the position of the head 10 of the.

Figure 2 shows the main part of the present invention, Figure 2a is an exploded perspective view of the main portion, Figure 2b is a combined perspective view of the main portion, Figure 3 is a plan view of the head alignment means 30 according to the first embodiment of the present invention 4 is a front view of the head alignment means 30 according to the first embodiment of the present invention, and FIG. 5 is a schematic plan view showing a state of use of the present invention. The above-described head alignment means 30 is as shown. The coupling bracket 31 is fixed to the upper side of the head 10 and integrally fixed to the head 10, and is formed to protrude to the lower surface of the support frame 20, the upper end of the coupling bracket 31 is inserted into the inside The outer side of the coupling bracket 31 having a rectangular support wall 32 formed with a receiving groove 321 and a pair of one side is spaced apart and fastened to one side of the support wall 32 and the inner end is inserted into the receiving groove 321. The coupling bracket 31 is installed to face the first adjustment screw 33 and the first adjustment screw 33 to support the side. The first support spring (34) for supporting the opposite side of the first adjustment screw 33 and the second support screw (35) and the second support spring (34) disposed in a vertical direction with the first support spring (34) 36).

The coupling bracket 31 is to secure the head 10 to the support frame 20, is fixed to the upper surface of the opposite side of the nozzle 11, the ink of the head 10 is injected, and protrudes in a rectangular shape It is inserted into the support wall 32 to be described later to be fixed.

The support wall 32 is formed to protrude in a rectangular shape on the lower surface of the support frame 20, the receiving groove 321 is formed to be accommodated by inserting the upper end of the above-described coupling bracket 31, By adjusting the adjustment screw and the support spring to be described later on the side of the support wall 32, the coupling bracket 31 is fixed to the support frame 20 by the support wall 32 to achieve a smooth position alignment.

The first adjusting screw 33 is spaced apart from each other on the long side of the support wall 32 is formed in a rectangular shape is fastened, the inner end is inserted into the receiving groove 321 through the support wall 32 It is configured to support the outer surface of the coupling bracket 31.

In addition, both ends of the inner wall of the support wall 32 and the outer surface of the coupling bracket 31 are disposed at a space between the support wall 32 and the coupling bracket 31 opposite to the first adjustment screw 33. One or more first support springs 34 to elastically support the one side of the coupling bracket 31 is supported by the first adjustment screw 33, the other side is elastic by the first support springs 34 By being supported, the coupling bracket 31 is fixed inside the receiving groove 321 by the support force of the first adjustment screw 33 and the first support spring 34 by the rotation of the first adjustment screw 33. The coupling bracket 31 is moved in one direction from the inside of the receiving groove 321.

The second adjustment screw 35 and the second support spring 36 is disposed perpendicular to the first adjustment screw 33 and the first support spring 34 described above, the second adjustment screw 35 is the The first adjustment screw 33 is penetrated through the support wall 32 perpendicular to the fastened surface, the inner end supports the outer surface of the coupling bracket 31 inserted into the receiving groove 321, The second support spring 36 is configured to support the opposite side of the support wall 32 facing the second adjustment screw 35 and to support the outer side of the coupling bracket 31 corresponding thereto. The coupling bracket 31 is moved in the vertical direction of the first adjustment screw 33 and the first support spring 34 by the rotation of the adjustment screw 35.

In addition, the coupling bracket 31 inserted into the receiving groove 321 by the combined operation of the first adjustment screw 33 and the second adjustment screw 35 is not only linear movement in the X, Y axis direction, but also in the rotational direction. By being able to move the position can be adjusted in various directions, it becomes possible to more precise and precise alignment of the position.

Accordingly, after confirming the position of the nozzle 11 by using the nozzle 11 alignment inspection camera 3 attached to one side of the stage 1, the head 10 in which an error occurs is first adjusted with a screw. By adjusting the 33 and the second adjusting screw 35, the positions of the heads 10 are precisely adjusted regardless of the number of the heads 10 by aligning the positions by adjusting them in the linear and rotational directions of X and Y. Being able to align allows for accurate printing.

In addition, the coupling bracket 31 and the receiving groove 321 is formed on one side or both sides of the ordinary permanent magnet to be attached to the inside of the receiving groove 321 by a magnetic force, the coupling bracket 31 and receiving The coupling of the grooves 321 is made more robust, so that the error of the head 10 is prevented from occurring due to external vibration or shock, and the mechanical friction is minimized when aligning the position of the head 10. It is preferable that the alignment is performed smoothly.

In addition, the coupling bracket 31 and the receiving groove 321 is formed as an electromagnet and coupled with a strong magnetic force by the supply of a current, when aligning the position of the head 10 to reduce the magnetic force of the electromagnet coupling bracket 31 It is also possible to smoothly move the inside of the receiving groove 321 so that the alignment of the position can be easily made, by applying a lubricant to the contact surface of the receiving groove 321 and the coupling bracket 31, the coupling bracket 31 It is also possible to make the movement of the movement more smooth.

Fig. 6 is a plan view of the head alignment means 30 showing the second embodiment of the present invention, which includes all the components of the first embodiment described above, and removes the above-described second adjustment screw 35. 1 Adjusting screw 33 is to be adjusted in the same plane so that the alignment of the position of the head 10 is made easier.

To this end, as shown in FIG. 6, the support wall 32 to which the first adjustment screw 33 is fastened is extended to the second adjustment screw 35 to form an extension wall 322, and the second adjustment screw ( A bevel gear 351 is formed at an outer end of the support wall 32 to the outside of the support wall 32, and an outer end of the bevel gear 351 is exposed to the inner side of the extension wall 322. A mating bevel gear 371 is formed to be engaged, and an adjustment knob 37 is rotatably inserted into the extension wall 322 to rotate the adjustment knob 37 on the outside of the extension wall 322. The gear 371 rotates the bevel gear 351 to allow the second adjustment screw 35 to rotate.

Accordingly, when the adjustment knob 37 and the first adjustment screw 33 are both positioned on the same surface to align the position of the head 10, the X and Y directions of the head 10 are aligned and rotated on one side. Direction alignment is enabled so that the alignment of the head 10 is made easier.

7 is a schematic front view of a main portion showing a third embodiment of the present invention, in which the present embodiment includes all of the components of the first or second embodiment described above, and is coupled to the lower side of the above-mentioned bridge to bridge Forming an external support bracket 41 moving along the surface, and forming an external support wall 42 into which the support frame 20 is inserted on a lower surface of the external support bracket 41, and forming one of the external support walls 42. The inner end is provided with an outer adjustment screw 43 is supported on the outer surface of the support frame 20 while being fastened to the side, and supports the opposite side of the support frame 20 supported by the outer adjustment screw 43 It is provided with an external adjustment means 40 having an external support spring 44 is configured to move the plurality of heads 10 at the same time by the rotation of the external adjustment screw 43.

The support frame 20 is movably inserted into an inner side of the outer support wall 42 protruding downward of the bridge 2, and the external adjustment screw 43 and the outer support spring 44 are supported by the support frame ( Both sides of the support 20, the outer adjustment screw 43 is rotated so that the support frame 20 is moved in one direction as a whole while being inserted into and separated from the outer support wall (42).

Accordingly, when the overall position alignment of the head 10 is required, the overall position of the head 10 may be adjusted by only rotating one external adjustment screw 43 without the hassle of aligning each head 10 separately. It is possible to move the position of the head 10 is made faster and easier.

In addition, the outer support bracket 41 and the support frame 20 may be formed of a magnetic material to be attached by a magnetic force in the same manner as the configuration of the coupling bracket and the receiving groove on any one or both sides.

FIG. 8 is a schematic plan view of a main portion showing a fourth embodiment of the present invention, which includes the components of the first to third embodiments described above, and includes a support frame 20a in which the head 10 is coupled in a line. 20b and 20c in parallel with each other, and the space between the support frames 20a, 20b and 20c can be adjusted so that the space between the support frames 20a, 20b and 20c can be adjusted. Forming the gap adjusting portion 50 to make it easy to adjust the spacing of the support frame (20a, 20b, 20c).

The gap adjusting unit 50 is formed of a support bar 51 made of nickel-titanium alloy, both ends of which are fixed to side surfaces of adjacent support frames, respectively.

The nickel-titanium alloy is a metal material having a property of repeating expansion and contraction with temperature change, and supplies a current to the support bar 51 formed of the nickel-titanium alloy, thereby causing the nickel-titanium to change due to the temperature change caused by the resistance of the current. By adjusting the length of the alloy, it is possible to adjust the gap between the support frame 20a, 20b, 20c by simply adjusting the amount of current supplied to the support bar 51, without performing a separate mechanical operation. This allows easy and precise spacing adjustments.

In addition, the spacing control unit 50 is not only the nickel-titanium alloy described above, but also the support frame 20a, 20b, 20c by adjusting the voltage using a piezoelectric element whose length is varied by the supplied voltage. It is also possible to adjust the separation distance of the.

As described above, the present invention provides a head aligning device having a head aligning means so as to individually align the positions of the heads of the inkjet printing apparatus, in which a plurality of heads are combined in one direction, so as to be mounted on the inkjet printing equipment. Regardless of the number of heads, a large number of heads can be constantly aligned, which makes it possible to manufacture a large display substrate more easily and precisely.

In addition, the present invention is to make the alignment of the X, Y direction and the rotation direction of the head by a simple configuration of the first and second adjustment screws and the first and second support springs fastened to the support wall, by rotating three adjustment screws The heads can be moved to the correct position to align the heads, making it easier to align the heads, making the head alignment means easier, and allowing the multiple heads to be easily aligned independently regardless of the number of heads. Have.

In addition, the present invention is to form a bevel gear on the second adjustment screw, and having a control knob connected to it so that adjustment in all directions on one side of the head is easily made, alignment of the X, Y and rotational direction of the head This can be done in one side all have the effect of faster and easier alignment of the head.

In addition, the present invention allows the coupling bracket is fixed to the inside of the support wall by a magnetic force so that the head is fixed to the inside of the support wall while being easily moved when aligning the position of the head, the head is firmly fixed to the support frame to the head In addition to preventing the positional deviation during the operation of the mechanical friction generated by moving the position of the coupling bracket by using the adjustment screw is minimized to have an effect that the position alignment of the head more smoothly.

In addition, the present invention is provided with an external adjustment screw and an external support spring for moving the support frame to easily adjust the position of the entire head, by moving one screw to move the overall position of the head, so that the alignment of the head more quickly It will have an effect made easily.

In addition, the present invention is to form a gap adjusting portion in the space between the plurality of support frame when a plurality of support frames are installed in parallel, so as to easily adjust the spacing between each support frame, it is easy to adjust the spacing of a large number of heads It has an effect.

In addition, the present invention is formed by the support bar of the nickel-titanium alloy spacing adjuster to adjust the current so that the distance between the support frame can be easily adjusted, without performing a separate mechanical operation simply and precisely the spacing of the support frame It will have an adjustable effect.

Claims (9)

delete delete A bridge reciprocating to one side is provided at an upper portion of the stage, and a plurality of heads for ejecting ink while reciprocating along the bridge is provided, and the bridge is coupled to rotate and move linearly and the plurality of heads are combined in one direction. In the head aligning device of the inkjet printing equipment comprising a support frame and a head alignment means for moving the plurality of heads coupled to the support frame independently in the X, Y and rotation directions, respectively, The head alignment means: silver Coupling brackets are respectively fixed to the upper side of the head; And A rectangular support wall protruding from a lower surface of the support frame and having an accommodation groove into which an upper end of the coupling bracket is inserted; A pair of first adjusting screws spaced apart from one side of the support wall and having an inner end supporting an outer surface of the coupling bracket; and A first support spring provided opposite the first adjustment screw and supporting both ends of an inner surface of the support wall and an inner surface of the coupling bracket; A second adjustment screw fastened to a support wall perpendicular to the first adjustment screw, and having an inner end supporting an outer surface of the coupling bracket; and A second support spring provided opposite to the second adjustment screw and supporting both ends of an inner surface of the support wall and an inner surface of the coupling bracket; An extension wall extending from the support wall to which the first adjustment screw is fastened to the second adjustment screw is formed, and a bevel gear is formed at the outer end of the second adjustment screw to protrude out of the support wall. The head alignment device of the inkjet printing apparatus, characterized in that the mating bevel gear is formed on the inner end and the mating bevel gear is engaged with the bevel gear at the inner end and is rotatably inserted into the extension wall. The method of claim 3, wherein The coupling bracket is head alignment apparatus of the inkjet printing equipment, characterized in that attached to the inside of the support wall by a magnetic force. The method according to claim 3 or 4, The outer support bracket is coupled to the lower side of the bridge to move along the bridge is formed, the outer support wall is formed on the bottom of the outer support bracket is inserted into the support frame, is fastened to one side of the outer support wall The inner end is provided with an external adjustment screw that is supported on the support frame, the outer adjustment screw is provided opposite to each other and both ends are provided with an outer support spring for supporting the inner surface of the outer support wall and the inner surface of the support frame, respectively The head alignment device of the inkjet printing equipment, characterized in that the outer control means is further provided. The method of claim 5, The support frame is a head alignment device of the inkjet printing equipment, characterized in that attached to the lower surface of the outer support bracket by a magnetic force. The method of claim 5, The support frame is inserted into a plurality of parallel to the inside of the outer support wall, the head alignment device of the inkjet printing equipment, characterized in that the gap adjusting portion is formed in the space between the support frame. The method of claim 7, wherein The gap adjusting unit; The head aligning device of the inkjet printing equipment, which is formed of a nickel-titanium alloy to which a current is supplied, and is formed of a plurality of support bars, both ends of which are fixed to adjacent support frames. The method of claim 7, wherein The gap adjusting unit; Head alignment apparatus of the inkjet printing equipment, characterized in that the both ends are formed of a piezoelectric element is fixed to each adjacent support frame.

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