TWI761768B - A coating machine that can control the coating thickness of the coating head by using an unwinding clean cloth - Google Patents

Abstract

The present invention provides a coating machine that can control the coating thickness of the coating head by using an unwinding clean cloth, wherein a coating platform is arranged on the machine table of the coating machine, and a coating platform is installed on the machine table to drive the coating The driving device for the movement of the machine, and the coating head and the clean cloth module are installed on the body of the coating machine. The dust-free cloth on the top, and the dust-free cloth bypasses the lip of the coating head, the coating machine can be driven by the driving device to move towards the direction of the coated part on the coating platform, and the lip of the coating head can be used The paint sprayed from the part will wet the continuous unwinding clean cloth, and then press it on the surface of the coated part to form a coating film with a uniform coating thickness, and the coating can be made at a fixed point during the coating process. It can keep the clean cloth moist and the coating amount is fixed and uniform, and after each coating, the clean cloth can be rolled up so that the crystals produced will not remain, which can ensure the quality of the coating.

Description

A coating machine that can control the coating thickness of the coating head with an unwinding clean cloth

The present invention provides a coating machine which can use the unwinding clean cloth to control the coating thickness of the coating head, in particular, the clean cloth can be wetted by the paint sprayed from the coating head, and then pressed against the coated part. A coating film with a uniform coating thickness is formed on the surface, and the dust-free cloth can be rolled up after coating, so that the crystals produced will not remain, and the coating quality can be ensured.

Press, most of today's common coating machines use high-precision and relatively low-cost coating technology, which can be used to control the uniformity of film thickness and the width of coating, not only widely used in electronic components (such as printed circuit boards, wafer structures, etc.). Coating on substrates used in industries such as optical films, solar cells or lithium batteries, and substrates used in semiconductor, flat-panel displays, etc.), and the application of flat-panel display products and electronic packaging requires the highest coating accuracy, It also has high added value, making relevant coating equipment manufacturers more actively invest in research and development.

However, the current coating machine has higher and higher requirements for coating precision in the process of flat-panel display, electronic assembly, etc., so that the film formed by the coating head spraying the coating on the surface of the substrate needs to have higher uniformity. For example, the substrate or primer used to increase the adhesion of printed circuit boards, the process requires a thickness of only about 0.5μm. The generally used coating method, because the coating sprayed by the coating head will be affected by properties such as surface tension and viscosity. , resulting in difficult control of film thickness, even irregular and unable to maintain a straight line, and because the thinner the film thickness, the easier the coating will dry It leads to the problem of crystallization in the process, and it is difficult to achieve the effect of coating, which is the direction that needs to be studied and improved by those engaged in this industry.

Therefore, in view of the above deficiencies, the inventor collects relevant information, evaluates and considers from various parties, and continues to experiment and revise with many years of experience accumulated in this industry, before designing this kind of unwinding clean cloth to control the coating head. The invention patent of coating machine for coating thickness was born.

The main purpose of the present invention is that the machine table of the coating machine is provided with a coating platform for positioning the coated parts, a driving device and a coating machine are installed on the machine table, and the main body of the coating machine is installed There is a coating head and a dust-free cloth module, wherein the dust-free cloth module includes a dust-free cloth wound around the cloth placing wheel and the take-up wheel, and the dust-free cloth bypasses the lip of the coating head, so that the The coating machine can be driven by the driving device to move toward the coated part on the coating platform, and the continuously unrolled clean cloth is wetted by the paint sprayed from the lip of the coating head, and then pressed. A coating film with a uniform coating thickness is formed on the surface of the coated part, and the coating head can be used as a supplementary amount of the coating during the coating process to keep the clean cloth wet and the coating amount It is fixed and uniform, and a part of the dust-free cloth can be rolled up after each coating, so that foreign matter such as crystals, cured products or particles will not remain, and the coating quality can be ensured.

The secondary object of the present invention is that the coating head of the coating machine includes a platen, a gasket and a coating sheet combined with the feed base, and has a lip extending a distance from the bottom of the feed base at the lower part of the coating head The bottom edge of the lip of the gasket is provided with a lip upward, so that after the paint inside the feeding seat is sprayed from the lip connected with the gasket, the amount of paint flowing out from the two sides of the lip can be higher than that from the middle. Less surface tension is not easy to pull out the coating, so that the coating of the coating head has a stable and straight edge, and the uniformity of the film thickness is better and more precise.

1: Machine

2: Coating platform

3: Drive device

4: Coating equipment

41: Ontology

411: Seat Plate

412: Motor

413: Feed wheel

414: Resist Wheel

42: Coating head

421: Feeder seat

4211: Guide slot

422: Platen

4221: Lips

423: Gasket

4231: Lips

4232: lips

424: Coating sheet

4241: Lips

43: Clean cloth module

431: Placing wheel

432: Rewinding Wheel

433: Clean cloth

434: Guide Wheel

435: steering wheel

436: Tensioner

[Fig. 1] is a three-dimensional external view of a preferred embodiment of the present invention.

[Fig. 2] is a three-dimensional external view of the coating machine of the present invention.

[Fig. 3] is a three-dimensional appearance view of the coating machine of the present invention from another perspective.

[FIG. 4] is an exploded perspective view of the coating head of the present invention.

[Fig. 5] is a schematic side view of the coating machine of the present invention before coating.

[Fig. 6] is a schematic side view of the coating machine of the present invention during coating.

[Fig. 7] is a schematic side view of the coating machine of the present invention after coating.

[Fig. 8] is a partial enlarged view of Fig. 7 of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention, the preferred embodiments of the present invention are described in detail in the drawings and the structure and function are as follows, so as to be fully understood.

Please refer to Figures 1 to 4, which are a three-dimensional external view of a preferred embodiment of the present invention, a three-dimensional external view of a coating machine, a three-dimensional external view of the coating machine from another perspective, and a three-dimensional exploded view of the coating head. , it can be clearly seen from the figure that the coating machine of the present invention comprises a machine 1, a coating platform 2, a driving device 3 and at least one set of coating tools 4, wherein:

The machine table 1 has a base, and a drive control system is arranged in the base or the lower frame, and a pair of lateral slide rails are arranged on two sides above the base, and a cross beam is installed on the two slide rails, but Not limited to this, upright columns can also be installed on the two slide rails respectively, and a beam is installed between the two upright columns to form a door-shaped frame.

The coating platform 2 is disposed above the base of the machine 1 and between the two slide rails, and is used to carry the coated parts (such as glass substrates; plastic films or flexible substrates; tapes; metal foils; optical films) Including polarizing film, diffusion film, brightness enhancement film; circuit board; battery plate and other substrates or sheets), and can be matched on the surface of the coating platform 2 (such as metal or granite platform) through a plurality of adsorption holes At least one coated part is positioned on the guide column, and the alignment platform of the calibration module is arranged below the coating platform, and the alignment platform drives the screw to adjust the XYZ axis direction.

The driving device 3 is installed on the base and beam of the machine table 1, and includes a horizontal driving mechanism (such as the XY axis of the coating direction), and the horizontal driving mechanism can achieve precise displacement through two sets of A motor drives a screw, a gear set, a rack or a belt with a pulley to drive the beam to move in the X-axis direction along the two slide rails, and a linear slide table is installed on the beam, and the linear slide table can also be driven by a motor. Screws, gear sets, racks or belts are used with pulleys to drive at least one positioning seat to move in the Y-axis direction, and can also be further matched with optical scales or position encoders for precise positioning.

The at least one set of coating tools 4 is mounted on the positioning seat of the driving device 3 on the linear slide table, and includes a main body 41 , a coating head 42 and a clean cloth module 43 , wherein the main body 41 has a bottom coupled to the positioning seat The upright seat plate 411 above, and a plurality of motors 412 arranged in an inverted triangle are installed on one side surface of the seat plate 411, and each motor 412 has a transmission shaft passing through the other side surface of the seat plate 411, and then on one of the motors 412. A feed wheel 413 is sleeved on the transmission shaft, and the seat plate 411 is provided with an abutment wheel 414 adjacent to the feed wheel 413, and the abutment wheel 414 can be respectively connected to the slide rail and the driving cylinder through the sliding seat, and The sliding seat is driven by the driving cylinder, and the abutting wheel 414 is interlocked to release or lock the feeding wheel 413 .

The coating head 42 is installed at the bottom of the base plate 411 of the main body 41, and includes a feeding base 421, a pressing plate 422, a gasket 423 and a coating sheet 424 which are sequentially combined with the feeding base 421 and have the same appearance and shape. A guide groove 4211 that tapers downward and extends to the bottom is recessed at the front of the feeding seat 421 , and extends out of the bottom of the feeding seat 421 by a distance below the pressing plate 422 , the gasket 423 and the coating sheet 424 . lip 4221, 4231, 4241, and the bottom edge of the lip 4231 of the gasket 423 is upwardly provided with a lip 4232 that communicates with the internal flow channel of the feed seat 421 through the through hole of the pressing plate 422, and the lip 4232 is A gap is formed by the thickness of the spacer 423 (eg, 76.2-127 μm, preferably 101.6 μm=4 mil).

In this embodiment, the supply seat 421 of the coating head 42 is connected to a supply module with a pump or a pressure vessel, and the storage tank storing the paint from the supply module is connected to the downstream through a supply pipeline Pump or pressure vessel, and then the pump or pressure vessel supplies the paint to the internal flow channel through the supply seat 421 connected by the supply pipeline, and the paint can be selected according to actual needs, such as photoresist, functional resin, Organic conductive polymer materials, light-curing coatings or other fluids with specific properties and viscosity, and the side of the feed seat 421 can be further combined with a sliding seat, and the sliding seat is connected to the sliding rail and the driving cylinder respectively. , the sliding seat can be driven by the driving cylinder to link the feeding seat 421 for longitudinal sliding displacement.

Furthermore, the clean cloth module 43 is installed on the seat plate 411 of the main body 41 and is located above the coating head 42, and includes a cloth feeding wheel 431, a winding wheel 432, and a cloth feeding wheel 431 and a winding wheel. The dust-free cloth 433 on the wheel 432, and the conveying path of the dust-free cloth 433 can be further equipped with a plurality of guide wheels 434, a plurality of turning wheels 435 and a tension adjuster 436, wherein the cloth feeding wheel 431 and the take-up wheel 432 are in the same position. In this embodiment, a detachable The feeding trays are respectively sleeved on the transmission shafts of the two motors 412, and the unused end of the dust-free cloth 433 is wound around the cloth placing wheel 431, and is sent out from the lower part of the cloth placing wheel 431 through the feeding wheel 413 and the feeding wheel 431. Between the abutting wheels 414, the adjusting wheel, the guide wheel 434 and the turning wheel 435 at the rear of the coating head 42 are bypassed in sequence, and the clean cloth 433 can pass directly under the coating head 42, or can be After bypassing the lips 4221 , 4231 , 4241 of the coating head 42 and the guide groove 4211 of the feeding base 421 , it passes through the steering wheel 435 , the guide wheel 434 and the adjusting wheel at the front of the coating head 42 and is wound around the On the take-up wheel 432 , the dust-free cloth 433 can be prevented from coming out through the guide groove 4211 of the feeding seat 421 .

The clean cloth 433 used by the above clean cloth module 43 is preferably implemented as non-woven cloth (or called non-woven fabric), which can be classified into cellulose non-woven cloth, needle-rolled non-woven cloth, melt-blown non-woven cloth, etc. according to the production process, but it is not Limited to this, it can also be cotton gauze, etc., and the two adjusting wheels of the tension adjuster 436 can be further combined with slide rails through the sliding seats, and are clamped by the tension plates on the two sliding seats. The belt is sleeved by the pulley, and an adjusting cylinder is connected to one of the tension plates. The adjusting cylinder can pull the belt to move the two adjusting pulleys inward or outward relatively, and the two adjusting pulleys are held against the dust-free cloth 433 The tension is adjusted upwards, so it will be explained together in the contents of the description below in this case, and it will be explained together.

Please refer to Figures 5 to 8, which are a schematic side view of the coating machine of the present invention before coating, a schematic side view during coating, a schematic side view after coating, and a partial enlarged view of Figure 7. It can be clearly seen from the figure that when the coating machine of the present invention is in use, the driving and control operations related to the coating platform 2, the driving device 3 and the coating machine 4 are carried out by the driving control system of the machine table 1, Real-time detection and status diagnosis, etc., in which the coating platform 2 can be placed on the coating platform 2 by using a transfer platform with a reclaiming mechanism or a robot to place coated parts (such as substrates or blanks), The horizontal drive mechanism of the moving device 3 drives the coating machine 4 to move toward the coating platform 2, and when the coating machine 4 moves to the top of the coated part, the sliding seat and the coating head 42 can be driven by the driving cylinder. Move downward and make the coating head 42 pass between the front and rear opposite steering wheels 435, and then extend to the outside of the main body 41, the lip 4221 of the pressing plate 422 can be pressed against the upper surface of the clean cloth 433, and The lower surface of the clean cloth 433 is pressed against the surface of the part to be coated, and at the same time, the paint is sprayed on the clean cloth 433 through the internal flow channel of the feed seat 421 and the lip 4232 of the gasket 423 to be wetted. The coated part can be coated, and a coating film with uniform coating thickness can be formed on the surface of the coated part, and the coating thickness can be controlled to be between 0.1~1μm.

During the coating process, the coating head 42 of the coating machine 4 can use the paint to wet the clean cloth 433 continuously unrolled from the clean cloth module 43, so that the paint can be free from dust after wetting. The thickness of the coating applied by the cloth 433 on the surface of the object to be coated remains the same, and when the driving device 3 drives the coating machine 4 to move in a predetermined coating direction (such as the XY axis direction), the coating head 42 can also be used for the coating. The wetting amount of the paint on the clean cloth 433 is fixed at a fixed point, so that the amount applied on the surface of the coated part is fixed and uniform, so as to ensure the quality of the coating.

In addition, the lips 4221 , 4231 , 4241 of the coating head 42 under the pressing plate 422 , the gasket 423 and the coating sheet 424 extend a distance from the bottom of the feeding seat 421 , and are on the bottom edge of the lip 4231 of the gasket 423 A lip 4232 is opened upward at the upper part, so that after the feeder 421 sprays the paint from the lip 4232, the amount of paint flowing out from the two sides of the lip 4232 is less than that from the middle, and the surface tension is not easy to pull the paint out. Therefore, the coating of the coating head 42 has a stable and straight edge, and the uniformity of the film thickness is better and more precise.

When the coating machine 4 completes the coating operation each time, the sliding seat can be driven by the driving cylinder to move the coating head 42 upward and return to the inside of the main body 41, and after the coating head 42 leaves the upper surface of the clean cloth 433, The coating machine 4 can be driven to return to the original position by the horizontal driving mechanism of the driving device 3 , and the feeding wheel 413 of the main body 41 can be matched with the cloth feeding wheel 431 and the winding wheel 432 of the clean cloth module 43 . Continuous unwinding of the clean cloth 433 is carried out, and the unwinding method is that the part of the clean cloth 433 that is not used (that is, not wetted by the paint or has been coated) is driven by the cloth feeding wheel 431 and the feeding wheel 413 to pass through the coating. Below the cloth head 42, the used clean cloth 433 is rolled up by the take-up wheel 432, and because the coating head 42 finishes coating each time, the used clean cloth 433 will be rolled up Part of it is replaced, so that the crystals, solidified products or particles generated on the clean cloth 433 will not remain, so as to avoid contact collision or scratching between the coating head 42 and foreign bodies or the coated parts during coating. Cause coating defects, and can ensure the quality of coating.

The above detailed description is for a preferred feasible embodiment of the present invention, but the embodiment is not intended to limit the scope of the present invention. All other equivalent changes and modifications are completed without departing from the technical spirit disclosed in the present invention. Changes should be included in the patent scope covered by the present invention.

To sum up, the above-mentioned coating machine of the present invention that can use the unwinding clean cloth to control the coating thickness of the coating head can indeed achieve its effect and purpose, so the present invention is an invention with excellent practicability. In order to meet the application requirements for an invention patent, we should file an application according to the law. We hope that the review committee will approve the case as soon as possible to protect the inventor's hard work. Really feel good.

4: Coating equipment

41: Ontology

411: Seat Plate

412: Motor

413: Feed wheel

414: Resist Wheel

42: Coating head

43: Clean cloth module

431: Placing wheel

432: Rewinding Wheel

434: Guide Wheel

435: steering wheel

436: Tensioner

Claims (7)

A coating machine that can control the coating thickness of the coating head by using the unwinding clean cloth There is a driving device for driving at least one coating machine to move to coat the coating on the surface of the coated piece to form a coating film, characterized in that: the coating machine comprises a main body and a coating installed on the main body A head and a dust-free cloth module, and the coating head has a lip, and the dust-free cloth module includes a cloth placing wheel, a winding wheel, and a dust-free cloth wound on the cloth feeding wheel and the winding wheel cloth, and the clean cloth bypasses the lip of the coating head, so that the paint sprayed from the lip wets the clean cloth, and then presses it on the surface of the coated part to coat to form There is the coating film, and the coating head of the coating machine further comprises a feed seat and a pressing plate, a gasket and a coating sheet combined with the feeding seat, and the pressing plate, the gasket and the coating sheet The lower part has a lip extending a distance from the bottom of the feeding base, and the bottom edge of the lip of the gasket is provided with a lip for spraying the paint to wet the clean cloth. The coating machine that can control the coating thickness of the coating head by using the unwinding clean cloth according to claim 1, wherein the main body of the coating machine is an upright seat plate, and the bottom of the seat plate is installed with the coating machine. A coating head, and the cloth placing wheel and the winding wheel of the dust-free cloth module installed on the base plate are located above the coating head. The coating machine that can use the unwinding clean cloth to control the coating thickness of the coating head as described in claim 2, wherein a motor is installed on the seat plate of the main body, and a drive shaft is sleeved on the drive shaft of the motor. A feeding wheel is provided, and an abutting wheel is arranged on the seat plate adjacent to the feeding wheel, and the dust-free cloth passes between the feeding wheel and the abutting wheel. As stated in claim 2, the coating thickness of the coating head can be controlled by using the unwinding clean cloth Coating machine, wherein the seat plate of the main body is installed on the clean cloth conveying path with a plurality of guide wheels and steering wheels located at the front and rear sides of the coating head, and the clean cloth is to bypass the guide wheels. on the pulleys and the steering wheels. The coating machine that can use the unwinding clean cloth to control the coating thickness of the coating head as described in claim 2, wherein a plurality of motors are installed on the base plate of the main body, and the transmission shafts of the motors are respectively sleeved The cloth feeding wheel and the take-up wheel are provided, so that the cloth feeding wheel drives the clean cloth to bypass the coating head, and then the coated clean cloth is rolled up by the take-up wheel. The coating machine that can control the coating thickness of the coating head by using an unwinding clean cloth as described in claim 1, wherein a guide groove that tapers downward to the bottom is recessed at the front of the feeding base, and is The dust-free cloth bypasses the lip of the coating head and the guide groove. The coating machine that can control the coating thickness of the coating head by using an unwinding clean cloth as described in claim 1, wherein the coating head of the coating machine is coated with the clean cloth after the coating has been wetted. The thickness of the coating film is between 0.1 and 1 μm.

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