WO2013108669A1 - 塗布方法及び装置 - Google Patents
塗布方法及び装置 Download PDFInfo
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- WO2013108669A1 WO2013108669A1 PCT/JP2013/050125 JP2013050125W WO2013108669A1 WO 2013108669 A1 WO2013108669 A1 WO 2013108669A1 JP 2013050125 W JP2013050125 W JP 2013050125W WO 2013108669 A1 WO2013108669 A1 WO 2013108669A1
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- Prior art keywords
- coating
- coated
- weight
- led
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- 238000000576 coating method Methods 0.000 title claims abstract description 167
- 239000011248 coating agent Substances 0.000 claims abstract description 146
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 28
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 23
- 239000011230 binding agent Substances 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 9
- 239000010419 fine particle Substances 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000011345 viscous material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- -1 YAG Chemical compound 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C15/00—Enclosures for apparatus; Booths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
Definitions
- the present invention relates to a method of applying a coating material to an object to be coated, and more particularly, a method and apparatus for applying a slurry or the like in which solid particles such as a phosphor are mixed in a binder to an object to be coated such as an LED or LED member, and further effects.
- the present invention relates to a coating method and apparatus for a low-viscosity coating material containing a volatile component such as a solvent.
- the application of the present invention includes continuous or intermittent dispensing, ink jetting, micro curtain application, slot nozzle application, atomization application, spraying, etc., and does not limit the method or apparatus. Further, the material and shape of the object to be coated are not limited.
- a typical example of the coating material can be a phosphor slurry that is covered with an LED from the degree of difficulty in handling and the added value of the required uniformity.
- a slurry which is a mixture of at least one phosphor such as YAG, TAG, and silica and a binder and ultraviolet light or blue light-emitting diode is dispensed with a dispenser or the like, and a solvent is added to increase the viscosity.
- the LED is directly sprayed and coated on an LED using an ultrasonic atomizing device or a spraying device which is a kind of a fine particle generator, or a phosphor plate or a film is formed to coat the LED.
- a phosphor sheet called a remote phosphor is created and pasted at a location away from the LED.
- Patent Document 1 circulates slurry with a circulation device, sprays the slurry containing phosphor on a heated LED chip by spirally swirling with compressed air, and is difficult to coat with a general spray method. There has been proposed a method of manufacturing an LED by attaching it to the side wall of the LED.
- Patent Document 2 an LED chip is coated with a binder such as silicone and cured, and a slurry made of a phosphor, a binder, and a solvent is applied thereon, and if necessary, a diffusing material or the like is mixed therein to adjust the color temperature.
- a binder such as silicone and cured
- a slurry made of a phosphor, a binder, and a solvent is applied thereon, and if necessary, a diffusing material or the like is mixed therein to adjust the color temperature.
- Patent Document 4 a viscous material of 100 centipoise (100 mPa.s) or more is effectively distributed from a reservoir via a metering device such as an auger valve from a distribution element (needle), and the measuring device measures the amount of viscous material.
- a metering device such as an auger valve from a distribution element (needle)
- the measuring device measures the amount of viscous material.
- a device has been proposed that receives and measures the speed of the robot and adjusts the moving speed of the robot and the discharge speed of the viscous material from the needle.
- a method using a dispenser as disclosed in Non-Patent Document 1 or the like is a method in which a chip mounted inside a cup such as a non-high power bullet-type LED or a TV or PC backlight LED is filled with the slurry to produce a large amount. Many are used for production.
- Patent Document 1 certainly circulates slurry that contains phosphor particles, so that compared to a general device, there is an ideal aspect that the phosphor particles are less likely to settle, but the circuit is large and can be used for coating. An expensive material several times to 20 times as much as the necessary material was required. Moreover, since the circuit is complicated, microprecipitation and clogging occurred everywhere in the circuit, leading to instability of the coating amount.
- Patent Document 2 discloses a method in which a binder is coated on an LED chip and cured, and then a slurry containing a phosphor is applied and laminated thereon by an air spray method. Further, the color temperature is measured in the middle of the process, and it is permitted to proceed to the next step only in the case of OK.
- a complicated process and an expensive apparatus are required. In addition, it takes too much time to process each LED chip.
- Patent Document 3 is suitable for R & D and medium production because it can be efficiently circulated with a small amount of material. However, if the setting of pressurized air is lowered and the circulation speed is slowed down, precipitation will occur, and if the air pressure is raised and circulation is accelerated, the slurries will be sheared more than necessary and the viscosity will decrease over time, increasing the coating amount. Since there was a tendency, the application work to the work was performed frequently repeating the weight check manually.
- Non-Patent Document 1 when a slurry such as a solvent-free silicone binder and phosphor particles is applied with a dispenser or the like using a simple device such as Non-Patent Document 1, the viscosity tends to be relatively high and precipitation tends to be difficult.
- the volumetric pump type such as a small auger pump and plunger pump, which can more easily manage the coating weight, was often used. Even so, the specific gravity per unit volume changed with precipitation, resulting in variations in quality.
- an attempt has been made to apply the coating work while confirming the weight with a measuring instrument by applying Patent Document 4 in the coating booth, but the slurry containing volatile components such as a solvent is sprayed.
- intake / exhaust in the application booth is required and the surface wind speed near the spray booth door is required to be 0.4 meters / second. Etc. still had a problem because of the impact on the weighing pan.
- the binder is currently being transferred from an epoxy resin to a poorly wet silicone resin in terms of durability and anti-color change properties. In some cases, a method of using liquid glass by a sol-gel method or the like and finally solidifying it to improve heat resistance and prevent discoloration has been proposed.
- silicone binders are difficult to wet on the chip, so the surface of the chip can be modified with corona, plasma, flame treatment, etc. to improve wetting, forcibly wetting and leveling, or to apply both Was needed.
- the low viscosity slurries are wet and thick, dripping occurs at the edges and side walls, and it is difficult to maintain the required coating at that site.
- the coating weight can be measured automatically, for example, in the case of single layer coating, correction coating can be performed if the coating weight is small, but if it is too large, the product will be defective. Even in the case of two to three-layer coating, slurries with unstable coating amounts and slurries with low viscosity had a high probability of being defective in the final coating process even if a positive displacement pump was used. Therefore, the method of directly applying the weight to an actual object to be coated is extremely risky.
- thin film and multi-layer coating is indispensable for these applications, but silicone with high viscosity of less than 5,000 mPa ⁇ s (5,000 centipoise), preferably tens of thousands mPa ⁇ s (centipoise) with little volume shrinkage when cured.
- a binder such as the above
- the viscosity of the slurry is increased, so that it cannot be applied as fine particles by means such as small droplet application dispensing that ejects dots at high speed, ink jet or spraying.
- the high-viscosity silicone as described above it is almost impossible to make the ratio of the phosphor in the slurry as 30% or more, preferably 50% or more by weight because of lack of fluidity.
- a method using an organic solvent is realistic as a means for reducing the viscosity.
- an organic solvent is added to the slurry and the viscosity is set to 100 mPa ⁇ s (centipoise) or less, preferably 50 mPa ⁇ s (centipoise) or less, the phosphor is settling drastically. It was almost impossible to achieve ⁇ 5%, preferably ⁇ 1.5% of the value.
- the present invention has been made to solve the above-mentioned problems, and the object of the present invention is to provide a coating method and apparatus having performance far superior to that of the conventional method and high productivity, and products such as LEDs produced by them. It is to be.
- the application method can be used in combination with the method of PCT / JP2011 / 050168, in which the present invention holds the rights, in terms of safety and hygiene, and can greatly reduce production costs. Is to provide a device.
- the present invention is a method of applying a coating material to an object to be coated in a place where there is a flow of gas, and applying the coating weight measuring object to the object before applying to the object to be coated.
- the first step of applying the coating material with the applicator, and the applied object for measuring the weight of application at least a part of the measuring unit of the weight measuring device is exposed or installed, and there is no gas flow or weight measurement. It moves to the weighing chamber under the atmosphere of gas flow that does not affect the flow, and consists of a second step of measuring the weight.
- the coating weight is within the predetermined range, or when out of the range, the coating is performed.
- a liquid coating method characterized by performing coating on an object after correcting the conditions.
- the present invention provides a coating method characterized in that after the application to the object to be coated is completed, the coating weight is automatically measured again and the coating amount is confirmed, and then moved to a drying device. To do.
- At least an application to the weight measurement object is performed in an application booth connected to an exhaust line and having a gas flow, and the application position and application weight measurement to the application weight measurement object are performed.
- a coating method characterized in that the chamber is adjacent.
- a dispenser an ink jet, and a fine particle generating and coating apparatus that can apply the applicator in a pulse manner by relatively moving the applicator and the object to be coated.
- the coating condition correction selects at least one of the coating material pressure, the relative speed of the applicator and the object to be coated, the coating pitch, the pulse cycle, the coating time per shot, and the flow path area. It is preferable to do.
- the object to be coated is an LED or an LED member, and the coating material is a slurry that is composed of at least a phosphor and a binder.
- the applicator is a fine particle generating and applying device, the slurry is applied to the weight measuring object, the weight is measured in the application weight measuring chamber, and then the fine particle generating and applying device.
- the LED or LED member is relatively pitch-shifted, and the coating method is characterized in that the coating is performed by shifting the phase of the pitch every time at least one coating is performed.
- the fine particle generating and coating apparatus is an air spray apparatus, and the tip spray portion of the air spray apparatus and the LED or the LED aggregate can be adjusted to a distance of 5 to 80 mm, and 2 to There is provided a coating method characterized by relatively moving at a pitch of 15 millimeters and performing coating while shifting the phase by 0.1 to 7.5 millimeters each time coating is performed.
- the slurry is a slurry having a weight ratio in which the ratio of the phosphor is larger than that of the binder and includes a solvent, and has a viscosity of 1 to 100 mPa.s.
- a method for manufacturing an LED or LED member characterized by being s (1 to 100 centipoise).
- the slurry is circulated by a circulation device or moved between two or more small containers to prevent the sedimentation of the phosphor.
- the pulse to the object for coating weight measurement and to the object to be coated in a cycle of 1 to 100 hertz.
- an apparatus for applying a coating material to a coating object with a coating device wherein the coating material is coated in the coating booth before coating to the coating object.
- a first step of applying the coating material to the coating weight measuring object with the applicator; and the coating weight measuring object coated with the coating material is adjacent to the coating booth and at least a weighing unit of the weight measuring device or
- a shutter that can be automatically opened and closed is installed at the opening of the partition wall between the coating booth and the coating weight measuring chamber, and the shutter is automatically closed when coating the material and measuring the weight.
- the apparatus is characterized in that the apparatus is opened when the object for coating weight measurement is moved.
- a thin lightweight object is installed as a part of the weighing unit in the weighing unit at the upper part of the weight measuring device so that the weighing operation can be performed quickly.
- the coating material is a slurry consisting of a phosphor and a silicone solution
- the applicator is an air spray device that sprays in a pulsed manner
- the object to be coated is an LED or an LED member.
- the air spray device and the LED or LED member are applied with a relative pitch shift, and a plurality of layers are applied by offsetting each time one layer is applied.
- the coating material coating method and apparatus of the present invention can automatically perform coating weight measurement in a coating weight measuring chamber that is not affected by disturbances, and is applied to an object based on the data. High-quality products can be manufactured efficiently.
- FIG. 1 and 2 show a coating apparatus according to an embodiment of the present invention.
- FIG. 1 is a schematic sectional view of the coating apparatus as viewed from the side
- FIG. 2 is a schematic plan view
- FIGS. 3 to 9 are weight measuring units.
- FIG. 10 is a pulse cycle chart.
- FIG. 1 and FIG. 2 there is an unillustrated intake or supply part upstream of the applicator 5 in the application booth 1, and an exhaust part 18 downstream of the article 3.
- the exhaust unit 8 is normally connected to an exhaust fan outside the apparatus, and an ideal wind flow occurs in the coating booth 1 when the exhaust fan is activated.
- the handling bracket in which the weight measuring object 4 is set from the opening 19 where the shutter 10 is opened by the opening / closing device 9 between the coating booth 1 and the coating weight measuring chamber 2 is applied. Move to the desired position in the booth.
- the weight measuring object 4 such as a plate or container shape set at the tip of the handling bracket 7, return to the coating weight measuring chamber, close the shutter, and total weight Measure. Since the weight measuring object 4 has been measured in advance, it can be easily communicated with a sequencer using an A & D measuring instrument AD-4212B-101 with a minimum display of 0.1 milligrams and a commercially available industrial computer or software, for example. It is possible to automatically output a pass / fail signal.
- An object to be coated (LED, LED member, etc.) 3 is set on the object placing unit 6 and is moved by a second drive source (not shown) and a second drive shaft 11.
- the applicator 5 is fixed to the bracket 17, and the bracket 7 is connected to the third drive source 16 and the fifteenth drive shaft 6 and moves up and down. Further, since the third drive shaft 15 is fixed to the first drive shaft 14 that moves orthogonally to the second drive shaft 11, the applicator 5 can move orthogonally and is coated on the coating object mounting unit 6. Since the object 3 can be pitch-fed, it can be uniformly applied to the range of the stroke of each drive shaft. Needless to say, “vertical coating” can be performed in which the coating device is moved in pitch with respect to the “horizontal coating”, and the object placing unit is continuously moved. They can also be repeated alternately. In order to apply a single layer of coating material to the object 11 with the applicator 5, or to apply more uniformly, apply multiple layers while shifting the phase of each layer (offset), and manually or automatically to the next process such as a drying zone. Move with.
- the handling bracket 7 can be automatically moved from the coating booth to the coating weight measuring chamber 2 by a device that rotates 90 degrees and moves up and down.
- the moving means is not particularly limited, such as front and rear, rotation, etc., but an inexpensive cylinder such as a multi-axis or multi-joint robot that rotates or moves up and down can be used.
- a stand 40 is set on the measurement object receiver 31 of the weight measuring device 30 so as to make it easier to receive the application weight measurement object.
- the handling bracket 7 moved to the upper part of the weight measuring device has a groove wider than the width of the stand 40.
- the handling bracket 7 is slowly lowered to softly land the application weight measuring object 4 on the upper surface of the stand 40.
- the object for coating measurement may be a metal or ceramic plate or a small container. After applying the coating material, it is possible to reuse the coating material for the next and subsequent measurements, especially in a slurry that uses a solvent.
- the weight measuring object 4 on the handling bracket 7 is simply placed, but in particular, the handling bracket can be processed in accordance with the shape of the weight measuring object so that it does not move due to vibration or the like.
- a single shot is applied by a spray flow 50 from the applicator 5 to the coating weight measurement object.
- the distance between the spray spray part and the application weight formulation may be the same as the application to the object to be coated, and if it is shortened, it is better because it is not affected by the wind.
- the length of the application time is not limited, but it is preferable to apply a small amount in as short a time as possible considering the cost of the coating material. From this point, it is preferable that the minimum measurement is 0.1 milligram. In this case, since it is affected by disturbances such as a small amount of wind, the wind flow should be completely shut off, especially when using a box equipped with a general electronic balance. .
- the application weight measurement constant object is applied in pulses as shown in FIG.
- the organic solvent does not easily evaporate, and therefore it is difficult to measure accurately.
- the flow rate of the phosphor slurry is reduced, nozzle clogging or the like occurs. For example, if it is applied at a pulse of 1 to 30 hertz (60 to 1800 cycles per minute), it can be solved. Suitable for application.
- the tip of the supporting bracket is C-shaped so that the object for coating weight measurement does not shift from side to side.
- the pulsed spray with impact has an excellent feature that the spray particles are moved by the pulsed vibration wave, so that the particles can be reliably adhered to a concave portion, for example, a step or corner of an LED.
- a plate that is just placed may move with vibration waves. In that case, it is important not to move back and forth.
- the coating material even if the coating material has an unstable flow rate, it automatically measures at least the coating amount before coating and then applies to the object to be coated. Productivity can be increased.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Led Device Packages (AREA)
Abstract
Description
重量測定物体4は予め測定してあるので例えば外部通信できて最少表示が0.1ミリグラムのA&D社の計量器AD-4212B-101と市販の工業用計算機やソフト等を使用してシーケンサーで簡単に処理し塗布重量の表示なり、合否の信号を自動的に出力できる。
被塗物載置ユニット6に被塗物(LED,LED部材等)3がセットされ図示されない第2の駆動源と第2の駆動軸11により移動する。塗布器5はブラケット17に固定されブラケット7は第3の駆動源16と第15の駆動軸6に連結し上下移動する。更に第3の駆動軸15は第2の駆動軸11と直交して動く第1の駆動軸14に固定されるので塗布器5は直交移動でき被塗物載置ユニット6にセットされた被塗物3はピッチ送りすることができるので各駆動軸のストロークの範囲まで均一に塗布できる。勿論のこと前記の“横塗り”に対し塗布器をピッチ移動させ被塗物載置ユニットを連続移動させて塗布する“縦塗り”もできる。又それらを交互に繰り返すこともできる。塗布器5で被塗物11に塗材が一層塗布され、又はより均一に塗布する為、層ごとに位相をずらし(オフセット)しながら複数層塗布し、乾燥ゾーン等の次工程へ手動又は自動で移動する。
塗布時間の長さは限定しないが、塗材のコストを考えたらできるだけ短時間で少量塗布が好ましい。その点からも最少測定は0.1ミリグラムが測定できることが好ましい。しかしてその場合少しの風の流れなどの外乱で影響を受けるので、二重に例えば一般的電子天秤に備わっているボックスも使用するなど特に測定時の風の流れは完全に遮断すべきである。
2 塗布重量測定室
3 被塗物
4 重量測定物体
5 塗布器
6 被塗物載置ユニット
7 ハンドリングブラケット
8 昇降装置
9 開閉装置
10 シャッター
11 第二駆動軸
12 ベルト
13 第一駆動源
14 第一駆動軸
15 第三駆動軸
16 第三駆動源
17 ブラケット
18 排気部
19 開口部
20 塗材
30 重量測定器
31 計量皿
40 スタンド
Claims (15)
- 気体の流れがある場所で被塗物に塗布器で塗材を塗布する方法であって、前記被塗物への塗布前に塗布重量測定用物体に前記塗布器で前記塗材を塗布する第一の工程と、塗布された前記塗布重量測定用物体を、重量測定器の計量部の少なくとも一部が露出または設置され、重量測定に影響しない気体の流れの雰囲気下の重量測定室まで自動的に移動し重量測定する第二の工程とからなり、予め決められた塗布重量範囲の時、又は塗布重量範囲外の時は塗布条件を補正した後、前記被塗物へ前記塗布器で塗布を行う事を特徴とする塗布方法。
- 前記被塗物への塗布終了後、再度自動的に塗布重量測定を行い塗布量を確認した後、乾燥装置へ移動することを特徴とする請求項1の塗布方法。
- 少なくとも排気ラインに接続され、気体の流れがある塗布ブース内で前記塗布重量測定用物体への塗布が行われ、該塗布重量測定用物体への塗布ポジションと前記塗布重量測定室が隣接していることを特徴とする請求項1乃至2の塗布方法。
- 前記塗布器と前記被塗物を相対移動させ、前記塗布器がパルス的に塗布できるディスペンサー、インクジェット、微粒子発生塗布装置の少なくとも一つから選択されることを特徴とする請求項1乃至3塗布方法。
- 前記塗布条件補正は、塗材圧力、前記塗布器と被塗物の相対スピード、塗布ピッチ、パルスサイクル、ワンショット塗布時間、流路面積の少なくとも一つを選択することを特徴とする請求項1乃至4の塗布方法。
- 前記被塗物がLED又はLED部材であって、前記塗材が少なくとも蛍光体とバインダーからなるスラーリーであることを特徴とする請求項1乃至5の塗布方法。
- 前記塗布器が微粒子発生装置であって、前記塗布重量測定物体へ前記スラーリーを塗布し前記塗布重量測定室で塗布重量測定を行った後、前記微粒子発生塗布装置とLED又はLED部材は相対的にピッチ移動し、少なくとも一層塗布するごとにピッチの位相をずらして塗布することを特徴とする請求項6の塗布方法。
- 前記微粒子発生装置がエアスプレイ装置であって、該エアスプレイ装置の先端噴出部とLED又はLED部材とは5乃至80ミリメートルの距離に調整可能とし、かつ2乃至15ミリメートルのピッチで相対移動し、一層塗布するごとに0.1乃至7.5ミリメートル位相をずらしながら塗布することを特徴とする請求項7の塗布方法。
- 前記スラーリーは重量比で前記バインダーより前記蛍光体の比率を大くし、かつ溶剤を含むスラーリーであって、粘度が1乃至100mPa・s(1乃至100センチポイズ)の範囲であることを特徴とする請求項6乃至8の塗布方法。
- 前記スラーリーは循環装置により循環させ、又は二つ以上の小型容器間で移動させて蛍光体の沈降を防止することを特徴とする請求項9の塗布方法。
- 前記塗布重量測定用物体及び被塗物へ1乃至50ヘルツのサイクルでパルス的に塗布することを特徴とする請求項1乃至10の塗布方法。
- 少なくとも排気ラインに接続された塗布ブース内で被塗物に塗材を塗布器で塗布する装置であって、前記被塗物への塗布前に前記塗布ブース内で塗布重量測定用物体に前記塗材を前記塗布器で塗布する第一の工程と、塗材が塗布された前記塗布量測定用物体を前記塗布ブースに隣接し、少なくとも重量測定器の計量部又はその一部が露出又は設置された塗布重量測定室まで自動的に移動し重量を測定する第二の工程とからなり、予め決められた範囲の塗布重量の時、被塗物へ塗布を開始することを特徴とする塗布装置。
- 前記塗布ブースと前記塗布重量測定室間の隔壁の開口には自動開閉できるシャッターが設置されており、該シャッターは自動的に塗材の塗布時及び重量計測時は閉に、前記塗布重量測定用物体の移動時には開になることを特徴とする請求項12の塗布装置。
- 前記塗布重量測定器の上部の計量部には、該計量部の一部として細く軽いスタンドを設置したことを特徴とする請求項12及び13の塗布装置。
- 前記塗材が蛍光体とシリコーン溶液からなるスラーリーであって、前記塗布器がパルス的にスプレイするエアスプレイ装置であって、前記被塗物はLED又はLED部材であって、前記エアスプレイ装置と前記LED又はLED部材は相対的にピッチ移動して塗布し、一層塗布するごとにオフセットさせて複数層塗布することを特徴とする請求項12乃至14の塗布装置。
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CN104319339A (zh) * | 2014-11-03 | 2015-01-28 | 汪涛 | 一种带圆形旋转托盘的led点胶封装设备 |
CN104319338A (zh) * | 2014-11-03 | 2015-01-28 | 汪涛 | 一种带加热装置的led点胶封装设备 |
WO2016158859A1 (ja) * | 2015-04-02 | 2016-10-06 | エムテックスマート株式会社 | 流体の噴出方法および流体の成膜方法 |
JP2018089543A (ja) * | 2015-04-02 | 2018-06-14 | エムテックスマート株式会社 | 流体の噴出方法および流体の成膜方法 |
CN110201830A (zh) * | 2019-07-09 | 2019-09-06 | 佛山市九真饰品有限公司 | 一种用于金属构件表面防护的涂覆装置 |
CN110201830B (zh) * | 2019-07-09 | 2020-10-23 | 吉本工艺(常熟)有限公司 | 一种用于金属构件表面防护的涂覆装置 |
JP2020022970A (ja) * | 2019-11-14 | 2020-02-13 | エムテックスマート株式会社 | 流体の噴出方法および流体の成膜方法 |
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EP2805777B1 (en) | 2022-02-02 |
JP2013144279A (ja) | 2013-07-25 |
CN104169010B (zh) | 2016-04-06 |
EP2805777A1 (en) | 2014-11-26 |
EP2805777A4 (en) | 2015-11-25 |
US20150155448A1 (en) | 2015-06-04 |
KR102080357B1 (ko) | 2020-04-07 |
JP5840959B2 (ja) | 2016-01-06 |
KR20140119740A (ko) | 2014-10-10 |
CN104169010A (zh) | 2014-11-26 |
US9608174B2 (en) | 2017-03-28 |
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