KR20190134186A - Modular dispnsing head unit - Google Patents

Abstract

The present invention relates to a modular dispensing head unit. The dispensing head unit comprises: a head module including a main panel, a liquid discharge module coupled to one side of the main panel, and an upper end panel coupled to the main panel in a horizontal direction; and a base module including a head module support part in which a head module mounting part installed with the head module is formed on an upper end thereof. A head module fixing part for fixing the upper end panel of the head module is provided in the head module mounting part.

Description

Modular Dispensing Head Units {MODULAR DISPNSING HEAD UNIT}

The present invention relates to a modular dispensing head unit. More specifically, the present invention relates to a modular dispensing head unit comprising a base module and a head module coupled to the base module.

In the manufacture of electronic devices, devices for discharging or applying a liquid to perform a specific function on a substrate are used. For example, in the manufacture of a flat panel display (FPD) such as a liquid crystal display (LCD) or an OLED display, various dispensing to form a configuration for performing a predetermined function on a substrate. The device is used. For example, the liquid crystal display is manufactured by bonding a color substrate with a color filter layer and a TFT (Thin Film Transistor) substrate on which driving elements are arranged. Liquid crystal is applied between the color substrate and the TFT substrate, and paste (or sealant) is applied to bond the color substrate and the TFT substrate.

In the manufacture of liquid crystal display devices, OLED devices or OLED displays, various dispensing for forming a liquid crystal layer, a paste pattern, an alignment film, a spacer, a conductive pattern, a color filter, a light emitting layer, a black matrix, or a phosphor layer. The device is used.

1 shows an example of a conventional dispensing apparatus.

The dispensing apparatus 1 includes a frame 3, a stage 5 provided on an upper portion of the frame 3 and loaded with a substrate S on which a predetermined liquid is dispensed, and an upper portion of the stage 5. And a head support 7 provided in the head support 7 and a dispensing head unit 9 provided in the head support 7 for dispensing a predetermined liquid. The stage 5 may be configured to be driven in the X-axis or Y-axis direction. In addition, the head support 7 may be installed to be linearly movable in the Y-axis direction from the top of the frame 3 by the drive motor (8). The dispensing head unit 9 can be positioned in the Z-axis direction in order to adjust its relative position with the substrate, and can also be driven in the X-axis and / or Y-axis directions.

On the other hand, in order to provide more precise and accurate quantity to a board | substrate, the use of the dispensing apparatus which discharges liquid by the inkjet method is increasing recently. As an example, Korean Patent Registration No. 0,070,42 discloses an inkjet type liquid crystal coating method for simultaneously applying a liquid crystal to a large area in a short time.

In the case of a dispensing device for applying a liquid crystal or the like, when the liquid crystal level of the liquid crystal reservoir for supplying the liquid crystal becomes low, the liquid crystal reservoir must be replaced or the liquid crystal reservoir must be replenished. Moreover, in the dispensing apparatus which apply | coats a liquid by the inkjet discharge system, it is necessary to replace or wash the discharge module containing an inkjet nozzle.

However, there is a problem that the dispensing device must be stopped when the liquid crystal reservoir bottle is replaced or refilled, or when the discharge module including the ink jet nozzle is replaced or cleaned.

In order to solve this problem, an object of the present invention is to provide a modular dispensing head unit which is configured to be detachably part of a dispensing head unit of a liquid dispensing device for dispensing a liquid such as a liquid crystal.

In addition, an object of the present invention is to provide a modular dispensing head unit that is configured by separating the modular dispensing head unit into a base module and a head module, and capable of firmly mounting and fixing the head module to the base module.

The present invention includes a head module including a main panel, the liquid discharge module coupled to one side of the main panel, and a top panel coupled to the main panel in a horizontal direction; And a base module including a head module support part formed at an upper end of the head module mounting part on which the head module is mounted. The head module mounting part includes a head module fixing part for fixing the upper panel of the head module. A dispensing head unit is provided.

In one embodiment, the bottom surface of the top panel is formed with a chuck insert, the head module fixing portion is inserted into the chuck insert includes a chuck extending in the horizontal direction.

In addition, the chuck insertion portion may have a first tapered surface that is wider upward, and a second tapered surface corresponding to the first tapered surface may be formed on an outer side of the chuck.

In addition, the chuck driving unit for driving the chuck insert in the horizontal direction may be provided inside the head module mounting portion.

In addition, one of the bottom surface of the upper panel and the top surface of the head module mounting portion is formed with a fixing pin, and the other is a fixing pin insertion hole for inserting the fixing pin is formed to mount the head module to the base module Can guide.

In addition, the upper surface of the head module mounting portion may be provided with a head module mounting detection unit for detecting the mounting of the upper panel.

In addition, the bottom surface of the top panel and the top surface of the head module mounting portion may be provided with a friction or wear protection coating or film.

In one embodiment, the base module may further include a rotation driving unit for rotating the head module in a horizontal direction by supporting the head module support to rotate.

According to the present invention, the dispensing head unit is divided into a base module and a head module, and the head module can be easily coupled to and detached from the base module, thereby facilitating assembly and maintenance of the dispensing head unit.

Further, according to the present invention, there is an advantage in that the dispensing head unit can be fixed firmly to the base module when the base module and the head module are defective.

1 shows an example of a conventional dispensing apparatus.
2 is a perspective view of a dispensing head unit according to a preferred embodiment of the present invention.
3 is a perspective view of the dispensing head unit according to a preferred embodiment of the present invention separated into a base module and a head module.
Figure 4 is a side view showing a state in which the base module and the head module in the dispensing head unit according to an embodiment of the present invention.
5 is a view schematically showing a configuration for the rotation of the dispensing head unit in the dispensing head unit according to a preferred embodiment of the present invention.
6 is a view showing a configuration that is rotated by the rotation drive in the dispensing head unit according to a preferred embodiment of the present invention.
7 is a view showing a change in the discharge pitch of the liquid according to the rotation state of the dispensing head unit according to a preferred embodiment of the present invention.
8 is a view showing the configuration of the top panel of the head module of the dispensing head unit according to an embodiment of the present invention.
9 is a perspective view of a base module of a dispensing head unit according to a preferred embodiment of the present invention.
10 is a view schematically illustrating a head module fixing part of the dispensing head unit according to an exemplary embodiment of the present invention.
11 is a view illustrating a state in which the head module is fixed to the base module in the dispensing head unit according to the preferred embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

2 is a perspective view of a dispensing head unit according to a preferred embodiment of the present invention, Figure 3 is a perspective view of the dispensing head unit according to a preferred embodiment of the present invention separated into a base module and a head module.

An embodiment of the dispensing head unit 9 will be described with reference to FIGS. 2 and 3.

The dispensing head unit 9 may be coupled to the head support 7 of the dispensing apparatus 1 as shown in FIG. 1, and transfers liquid from the liquid main reservoir 230 to the liquid discharge module 40. To discharge the liquid. In one embodiment, the liquid discharging module 40 may include an ink jet nozzle 42, and may discharge the liquid through the nozzle 42 in an ink jet method. However, the discharge method of the liquid discharge module 40 in the practice of the present invention is not limited to the inkjet method. The liquid discharged by the dispensing head unit 9 may be a liquid having a predetermined viscosity, and may be a liquid crystal layer, a paste pattern, an alignment layer, a spacer, a conductive pattern, a color filter, a light emitting layer, a black matrix, or a phosphor layer. It may be a liquid for forming either on a substrate.

The dispensing head unit 9 may include a base module 10 and a head module 20 detachably coupled to the base module 10. In one embodiment, the base module 10 may be coupled to the head support 7 of the dispensing device 1 through the head unit support 30. The head unit support part 30 connects the coupling plate 32 coupled to the head support 7 with the coupling plate 32 and the base module 10, and moves the base module 10 in at least one axial direction (for example, For example, it may include a drive unit 34 for driving in the vertical direction).

The base module 10 includes a base panel 100 disposed in a vertical direction, a fixed panel 102 fixed in a horizontal direction to the base panel 100, and a head module support 110 connected to the fixed panel 102. , And a head module mounting part 120 provided on an upper portion of the head module support 110. The base panel 100 may be coupled to the head unit support 30. The head module support 110 and the head module mounting unit 120 may be separately configured to be coupled to each other or integrally formed.

The head module fixing part 130 may be provided on the head module mounting part 120 to fix the head module 20 when the head module 20 is mounted. In addition, the head module mounting unit 120 is provided with a head module mounting detection unit 122 for detecting that the head module 20 is mounted on the base module 10, the head module (in the head module mounting detection unit 122) When it is detected that 20 is mounted, the head module fixing unit 130 may be operated. The head module mounting detection unit 122 may be configured in the form of a switch that is turned on when the head module 20 is mounted on the base module 10. The sensor may detect mounting of the head module 20. Any configuration may be used.

The head module support 110 may be provided with a pinch valve 112. The pinch valve 112 includes a first pinch valve 112a having a convex portion 114a and a second pinch valve 112b having a concave portion 114b. The liquid crystal supply pipe 238 is brought into close proximity to the first pinch valve 112a and the second pinch valve 112b while the liquid crystal supply pipe 238 is sandwiched between the first pinch valve 112a and the second pinch valve 112b. The supply of liquid through the can be interrupted.

In addition, the base module 10 may be further provided with a rotation drive unit 50 for rotationally driving the head module support 110 and the head module mounting unit 120 in a horizontal direction while being fixed to the fixing panel 102. have.

The head module 20 is coupled to a main panel 200 disposed in a vertical direction, a liquid main storage unit 220 formed at an upper end of the main panel 200, and a lower end of the main panel 200. It includes a liquid discharge module 40. The liquid main storage unit 220 may be formed on an upper portion of the upper panel 210 coupled to the upper end of the main panel 200 in a horizontal direction. The liquid main storage unit 220 includes a liquid main storage unit 230 for storing and supplying liquid to be discharged to the liquid discharge module 40.

A cap 232 may be provided at an upper opening of the liquid main storage unit 230, and the liquid stored in the liquid main storage unit 230 is supplied through the first liquid supply pipe 234 and the first liquid supply pipe 234. A filter unit 236 for filtering the liquid to be formed, a second liquid supply pipe 238 for supplying the liquid passing through the filter unit 236 to the inkjet liquid discharge module 40 may be provided. Pneumatic pressure may be supplied to the inside of the liquid main storage unit 230 (a pneumatic supply configuration is not shown), and the liquid stored in the liquid main storage unit 230 may be discharged to the first liquid supply pipe 234 by pneumatic pressure.

4 is a side view illustrating a state in which a base module and a head module are separated in a dispensing head unit according to a preferred embodiment of the present invention, and FIG. 5 is a dispensing in a dispensing head unit according to a preferred embodiment of the present invention. Figure is a diagram schematically showing a configuration for the rotation of the head unit.

The head module 20 is mounted to the head module mounting part 120 and fixed by the head module fixing part 130.

The head module mounting part 120 may be provided on the head module support 110, and the head module mounting part 120 may be formed integrally with the head module support 110. The head module mounting unit 120 may be supported by the rotation driving unit 50, and the head module mounting unit 120 may be rotationally driven by the rotation driving unit 50.

The rotation drive unit 50 may include a drive motor 52 and a support bearing 54. The drive motor 52 is fixed to the fixed panel 102 fixed in the horizontal direction to the base panel 100. In order to fix the driving motor 52, a fixing screw 53 may be provided to fasten the fixing panel 102 and the driving motor 52. Meanwhile, in FIGS. 4 and 5, the upper part of the driving motor 52 is illustrated as being fixed to the lower part of the fixing panel 102, but the driving motor 52 may be located at the upper part of the fixing panel 102. have.

The drive motor 52 may include a drive shaft 56, and the drive shaft 56 may be connected to the head module support 110. The head module support 110 may be rotated according to the rotation of the drive shaft 56. The drive motor 52 may be a direct drive motor.

In one embodiment, the head module support 110 is supported by a bearing 54. A portion of the bottom surface of the bearing 54 may support the head module support 110 in a state of being fixed to the fixing panel 102. Such bearing 54 may be a cross roller bearing. The bottom surface of the head module support 110 may be formed with a seating portion 116 coupled to the upper portion of the bearing 54 or a portion of the bearing 54.

6 is a view showing a configuration that is rotated by the rotation drive in the dispensing head unit according to a preferred embodiment of the present invention.

In FIG. 6, a configuration in which rotation is driven by the rotation driver 50 is indicated by a dotted line. Referring to FIG. 6, the head module support 110 and the head module mounting part 120 are rotationally driven according to the driving of the rotation driver 50. The head module 20 is mounted to the head module mounting part 120, and the head module 20 also rotates with the rotation of the head module mounting part 120.

7 is a view showing a change in the discharge pitch of the liquid according to the rotation state of the dispensing head unit according to a preferred embodiment of the present invention.

7 (b) shows a state in which the head module mounting unit 120 and the head module 20 coupled thereto are not rotated, and FIG. 7 (a) shows the head module mounting unit 120 and the head module coupled thereto ( 20 shows a state in which the predetermined angle θ1 is rotated counterclockwise, and FIG. 7C illustrates that the head module mounting unit 120 and the head module 20 coupled thereto rotate in a clockwise direction. Status is displayed.

As the head module 20 rotates, the liquid discharging module 40 included in the head module 20 also rotates, and FIGS. 7 (d), 7 (e) and 7 (f) are shown in FIGS. b) and (c) show the liquid ejection state by the nozzle unit 42 provided in the liquid ejection module 40 in each state.

The nozzle unit 42 includes a plurality of nozzles 44 arranged in a row, and the angle of the nozzle unit 42 with respect to the application direction of the dispensing head unit 9 also varies according to the rotation of the head module 20.

Referring to FIG. 7E, when the head module 20 is not rotated, the pitch interval of the applied liquid 1000 is d2. However, referring to FIGS. 7D and 7E, the pitch interval of the liquid 1000 applied according to the rotation of the head module 20 is d1 or d3, which is smaller than that of FIG. 7E. For example, when the liquid crystal is applied to one surface of the substrate constituting the liquid crystal display by using the head module 20, the discharge pitch of the liquid crystal applied to the substrate may be easily adjusted by rotating the head module 20. . In addition, it is possible to change the discharge characteristic of the liquid as necessary by rotating the head module 20 counterclockwise or clockwise.

Next, in the dispensing head unit 9 including the head module 20 and the base module 10, a configuration of fixing the head module 20 to the base module 10 will be described.

8 is a view showing the configuration of the top panel of the head module of the dispensing head unit according to an embodiment of the present invention. FIG. 8A is a perspective view of the top panel 210 coupled to the main panel 200 in the bottom direction, and FIG. 8B is a cross-sectional view of the top panel 210 of FIG. 8A. AA 'cross section).

A chuck insert 212 is formed at the bottom of the top panel 210. The chuck insert 212 may be formed at a predetermined depth on a bottom surface of the top panel 210 and may have a substantially circular shape. The chuck insert 212 is configured to form a first tapered surface 216 that increases in diameter upward. In addition, the upper panel 210 may have a fixing pin insertion hole 214 is formed.

9 is a perspective view of the base module of the dispensing head unit according to a preferred embodiment of the present invention, Figure 10 is a view schematically showing the head module fixing portion of the dispensing head unit according to a preferred embodiment of the present invention.

The head module mounting part 120 of the base module 10 is provided with a head module fixing part 130, and the head module fixing part 130 is provided with a chuck 132 that extends outward. At least two chucks 132 may be provided. In one embodiment, the chuck 132 includes a first chuck 132a, a second chuck 132b, and a third chuck 132c disposed at an angle of 120 degrees. In addition, a fixing pin 134 protruding from the head module mounting part 120 is formed. The fixing pin 134 is inserted into the fixing pin insertion hole 214 formed on the bottom surface of the top panel 210 of the head module 20. As the fixing pin 134 is inserted into the fixing pin insertion hole 214, when the head module 20 is coupled to the base module 10, the coupling position of the head module 20 may be guided or aligned. At least two fixing pins 134 may be provided. The fixing pins 134 may prevent the head module 20 from rotating above the head module mounting unit 120. Meanwhile, in the embodiment of the present invention, the fixing pin insertion hole 214 may be formed in the head module mounting unit 120, and the fixing pin 134 may be formed on the bottom surface of the upper panel 210.

Referring to FIG. 10, the chuck 132 forms a second tapered surface 133 whose outer circumferential surface becomes smaller in diameter from the top to the bottom thereof. The chuck 132 is driven by the chuck driver 136. The chuck drive 136 may be operated by pneumatic pressure. The chuck 132 may expand and contract in the horizontal direction by driving the chuck driver 136. That is, the chuck 132 may be spread outward in the horizontal direction and narrowed inward. The configuration of the chuck driver 136 and the chuck 132 may be configured as a rotary chuck. The chuck drive unit 136 may include a piston (not shown) that is elevated by pneumatic pressure and a wedge (not shown) for expanding or contracting the chuck 132. However, in the implementation of the present invention, if the chuck 132 is configured to expand and contract, it may be possible to configure the motor or solenoid in addition to the pneumatic method.

11 is a view illustrating a state in which the head module is fixed to the base module in the dispensing head unit according to the preferred embodiment of the present invention.

Referring to FIG. 11A, in the state before the top panel 210 of the head module 20 is mounted to the head module mounting part 120 of the base module 10, the chuck 132 extends in the horizontal direction. It is in the state before becoming.

As the head module 20 descends to the upper portion of the head module mounting part 120, the fixing pin 134 is inserted into the fixing pin insertion hole 214 to guide the mounting position of the head module 20.

Referring to FIG. 11B, in the state where the upper panel 210 is mounted to the head module mounting unit 120, the chuck 132 is extended so that the outer circumferential surface of the chuck 132 is the first of the chuck insertion unit 212. It contacts the tapered surface 216. Accordingly, the upper panel 210 is fixed to the upper surface of the head module mounting unit 120. The chuck drive 136 may be driven manually or automatically. For example, when the upper panel 210 detects that the head module mounting unit 120 is mounted by the head module mounting detection unit 122 provided above the head module mounting unit 120, the chuck driving unit 136 may be used. It can be operated automatically.

On the other hand, in the practice of the present invention, the bottom surface of the top panel 210 and the top surface of the head module mounting portion 120 may be in contact with each other wear. In order to prevent abrasion or friction, the bottom surface of the top panel 210 and the top surface of the head module mounting unit 120 may be provided with an anti-friction or anti-wear coating or film.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

9: dispensing head unit 10: base module
20: head module 30: head unit support
40: liquid discharge module 50: rotation drive unit
52: drive motor 54: bearing
100: base panel 102: fixed panel
110: head module support 120: head module mounting portion
130: head module fixing part 132: chuck
134: fixed pin 136: chuck drive
200: main panel 210: top panel
212: chuck insertion portion 214: fixing pin insertion hole
216: first tapered surface

Claims (8)

A head module including a main panel, the liquid discharge module coupled to one side of the main panel, and a top panel coupled to the main panel in a horizontal direction; And
And a base module including a head module support part on which the head module mounting part on which the head module is mounted is formed.
Dispensing head unit, characterized in that the head module mounting portion is provided with a head module fixing portion for fixing the upper panel of the head module. The method of claim 1,
A dispensing head unit, characterized in that the bottom surface of the upper panel is formed with a chuck insertion portion, the head module fixing portion is inserted into the chuck insert portion to extend in the horizontal direction. The method of claim 2,
The dispensing head unit of claim 1, wherein the chuck insertion portion has a first tapered surface that is widened upwardly, and a second tapered surface corresponding to the first tapered surface is formed outside the chuck. The method of claim 2,
Dispensing head unit, characterized in that the chuck driving unit for driving the chuck insert in the horizontal direction is provided in the head module mounting portion. The method according to any one of claims 1 to 4,
A fixing pin is formed on one of a bottom surface of the upper panel and an upper surface of the head module mounting part, and a fixing pin insertion hole is formed on the other of the top panel to guide the mounting of the head module to the base module. Dispensing head unit, characterized in that. The method of claim 4, wherein
Dispensing head unit, characterized in that the upper surface of the head module mounting portion is provided with a head module mounting detection unit for detecting the mounting of the upper panel. The method of claim 1,
Dispensing head unit, characterized in that the bottom surface of the top panel and the top surface of the head module mounting portion is provided with a friction or wear protection coating or film. The method of claim 1,
The base module further comprises a rotation driving unit for rotating the head module in a horizontal direction by supporting and rotating the head module support.

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