CN105107686A - Scraper structure and glue application method - Google Patents
Scraper structure and glue application method Download PDFInfo
- Publication number
- CN105107686A CN105107686A CN201510618754.8A CN201510618754A CN105107686A CN 105107686 A CN105107686 A CN 105107686A CN 201510618754 A CN201510618754 A CN 201510618754A CN 105107686 A CN105107686 A CN 105107686A
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- cutter head
- glue
- scraper
- printing
- blade
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Abstract
The invention discloses a scraper structure and a glue application method. The scraper structure comprises a body and a head. One end of the body is provided with a fastening handle, and the other end thereof is provided with the head. The width of the section of the head gradually decreases. In the glue application method, the head and a printing plate form an entry angle 10-40 degrees and a separating angle 10-40 degrees. In the scraper structure and the glue application method, the head of the scraper is designed a manner wherein the width of the section gradually decreases, so that the bottom of the scraper forms small gathering entry angle and separating angle 10-30 degrees, glue scraping and glue coating processes are smooth and meet hydromechanics principle, scraping thickness non-uniformity and bubbles caused by abrupt changes in sectional area of relative motion of the scraper and glue in conventional metal stencil printing are decreased, printing success rate and controllability are improved, printing quality can be improved, glue waste can be decreased, printing resistance is decreased, and production process convenience is improved.
Description
Technical field
The present invention relates to a kind of heat-conducting glue apparatus for coating, particularly relating to a kind of blade construction and glue spreading method for carrying out heat-conducting glue coating on heating element or radiating element.
Background technology
LED chip, communication device, electronic chip etc. produce a large amount of heats in operation, need by back side brushing heat-conducting glue to form good heat transfer path, avoid device intensification premature failure, even burn.Liquid or gluey heat-conducting glue comprises the thermal conductive silicon cream that curing reaction does not occur, and the heat conduction bonding agent etc. of addition reaction or condensation reaction occurs.As DOW CORNING TC4025 (bi-component), SE4485, EA9189,1-4173 etc., viscosity number is not from several ten thousand to hundreds of thousands mPaS etc.
High-heat-conductivity glue water packing is more, and weight ratio reaches 50-90%, and viscosity is comparatively large, and rheological characteristic is poor, also bad to the adhesiveness of print surface.Conventional typography adopts stainless steel thin slice or the rigid plastics of uniform thickness, construction angle of attack angle is at 45-75 °, easily deformable in the middle of construction, cause the heat-conducting glue of printing in uneven thickness, also easily bubble etc. is produced, and in the middle of construction, scraper is easily deformable, affects stability and the controllability of printing quality.And the heat-conducting pad of curing molding (thermalpad) price is higher, and need secondary operations to cut into special-shaped feature, waste of material is serious.
Summary of the invention
The object of the present invention is to provide a kind of blade construction and glue spreading method, this blade construction and glue spreading method have raising printing quality, reduce glue waste, reduce printing resistance and the feature improving production technology convenience, to solve in prior art the problems referred to above of printing heat-conducting glue and existing.
For reaching this object, the present invention by the following technical solutions:
A kind of blade construction, it comprises blade and cutter head, and one end of described blade is provided with fastening handle, and the other end arranges cutter head, and wherein, the cross-sectional width of described cutter head narrows gradually.
Especially, the frictioning face in the cross section of described cutter head is any one of circular arc or wedge structure.
Especially, the frictioning face of described cutter head is coated with hydrophobe coating, adheres to reduce wake flow and improve glue disengaging performance, reducing scraper and pollute and cleaning, enhance productivity.
Especially, the length of described cutter head is 1 ~ 4 ㎜, and thickness is 0.1 ~ 1mm.
Especially, described cutter head is made up of at least two spaced wings, and the spacing distance of adjacent two wings coordinates the non-frictioning region on product to arrange, to avoid non-frictioning region and to improve efficiency of construction.
Especially, described cutter head and blade adopt any one of integrative-structure or Split type structure.
Especially, described hydrophobe coating is any one of nickel coating or teflon coatings.
A kind of glue spreading method, it comprises the following steps:
1) heat-conducting glue is applied on printing stencil,
2) adopt scraper to carry out printing operation to heat-conducting glue, the cross-sectional width of the cutter head of described scraper narrows gradually, and the entry angle that cutter head and printing stencil are formed is 10 ~ 40 °, and departing from angle is 10 ~ 40 °.
Especially, described step 2) in print force control between 0.5kgf ~ 5kgf.
Especially, described step 2) in print speed printing speed control at 1 ~ 10cm/S.
Beneficial effect of the present invention is, compared with prior art the segment design of scraper is that cross-sectional width narrows gradually by described blade construction and glue spreading method, thus bottom scraper, form less convergence entry angle and depart from 10 ~ 30 °, angle, and make frictioning, cover glue process smooth-going, meet fluid mechanics principle, reduce conventional steel reticulated printing and produce the in uneven thickness and bubble of frictioning because of the area of section sudden change of scraper and glue relative motion, improve and be printed as power, be specially adapted to printing viscosity larger, filler is more, the poor material of trickling property is as high thermal conductivity boundary material, surface seals solder etc.Can not only printing quality be improved, reduce glue waste, and reduce printing resistance, improve production technology convenience.
Accompanying drawing explanation
Fig. 1 is the structural representation of the blade construction that the specific embodiment of the invention 1 provides;
Fig. 2 is the side view of the blade construction that the specific embodiment of the invention 1 provides;
Fig. 3 is the printing schematic diagram of the blade construction that the specific embodiment of the invention 1 provides.
In figure:
1, blade; 2, cutter head; 3, attachment screw; 4, fastening handle; 5, wing; 6, heat-conducting glue; 7, printing stencil.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 to Fig. 3, in the present embodiment, a kind of blade construction is made up of metal foil or rigid plastics, comprise blade 1 and the cutter head 2 of integrative-structure, one end of described blade 1 is provided with fastening handle 4 by attachment screw 3, the other end arranges cutter head 2, the length of described cutter head is 1 ~ 4 ㎜, thickness is 0.2 ~ 1mm, the cross-sectional width of described cutter head 2 narrows gradually, namely the cross section of described cutter head 2 is wedge structure, the frictioning face of described cutter head 2 is coated with hydrophobe coating, described hydrophobe coating adopts nickel coating, adhere to reduce wake flow and improve glue disengaging performance, reduce scraper to pollute and cleaning, enhance productivity.
Described cutter head 2 is made up of at least two spaced wings 5, and the spacing distance of adjacent two wings 5 coordinates the non-frictioning region on product to arrange, to avoid non-frictioning region and to improve efficiency of construction.
The frictioning face of described cutter head 2 adopts polishing, etching, extruding or other methods such as practicable to process.
A kind of glue spreading method, it comprises the following steps: 1) be applied on the correct position on printing stencil 7 by appropriate heat-conducting glue 6,2) scraper is adopted to carry out printing operation to heat-conducting glue 6, the cross-sectional width of the cutter head 2 of described scraper narrows gradually, and entry angle A=10 ~ 40 ° that cutter head 2 and printing stencil 7 are formed, departing from angle is 10 ~ 40 °.Make heat-conducting glue 6 in coating procedure, play convergence effect and do not disperse, thus form even brush on printed surface, and expand process window, rate of reducing the number of rejects and seconds.Print force controls between 0.5kgf ~ 5kgf.Print speed printing speed controls at 1 ~ 10cm/S.
Above-mentioned blade construction and glue spreading method are specially adapted to print material such as high thermal conductivity boundary material, the surface that viscosity is comparatively large, filler is more, trickling property is poor and seal solder etc.Can be used for the backside adhesive process of the heating elements such as LED light emitting diode, power device, high-power die, also can be used for the gluing bottom radiator, or the radiating element of the high heat flux such as laser.
Cellular heat-conducting glue is printed better than square features spreadability, the advantages such as after pressing bubble is few in concrete application.
Above embodiment has just set forth general principle of the present invention and characteristic; the present invention does not limit by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. a blade construction, it comprises blade and cutter head, and one end of described blade is provided with fastening handle, and the other end arranges cutter head, it is characterized in that, the cross-sectional width of described cutter head narrows gradually.
2. blade construction according to claim 1, is characterized in that, the frictioning face in the cross section of described cutter head is any one of circular arc or wedge structure.
3. blade construction according to claim 1, is characterized in that, the frictioning face of described cutter head is coated with hydrophobe coating.
4. blade construction according to claim 1, is characterized in that, the length of described cutter head is 1 ~ 4 ㎜, and thickness is 0.1 ~ 1mm.
5. blade construction according to claim 1, is characterized in that, described cutter head is made up of at least two spaced wings, and the spacing distance of adjacent two wings coordinates the non-frictioning region on product to arrange.
6. blade construction according to claim 1, is characterized in that, described cutter head and blade adopt any one of integrative-structure or Split type structure.
7. blade construction according to claim 3, is characterized in that, described hydrophobe coating is any one of nickel coating or teflon coatings.
8. a glue spreading method, is characterized in that: it comprises the following steps:
1) heat-conducting glue is applied on printing stencil,
2) adopt the scraper described in any one of claim 1 to 6 to carry out printing operation to heat-conducting glue, the cross-sectional width of the cutter head of described scraper narrows gradually, and the entry angle that cutter head and printing stencil are formed is 10 ~ 40 °, and departing from angle is 10 ~ 40 °.
9. glue spreading method according to claim 8, is characterized in that, described step 2) in print force control between 0.5kgf ~ 5kgf.
10. glue spreading method according to claim 8, is characterized in that, described step 2) in print speed printing speed control at 1 ~ 10cm/S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618754.8A CN105107686A (en) | 2015-09-24 | 2015-09-24 | Scraper structure and glue application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618754.8A CN105107686A (en) | 2015-09-24 | 2015-09-24 | Scraper structure and glue application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105107686A true CN105107686A (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510618754.8A Pending CN105107686A (en) | 2015-09-24 | 2015-09-24 | Scraper structure and glue application method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105107686A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845026A (en) * | 2020-07-03 | 2020-10-30 | 许世璋 | Screen printing plate for printing special-shaped products and manufacturing method thereof |
| CN113578644A (en) * | 2021-07-20 | 2021-11-02 | 上海纳米技术及应用国家工程研究中心有限公司 | Auxiliary device for multilayer coating of lithium battery pole pieces |
| CN113695189A (en) * | 2021-08-16 | 2021-11-26 | 清华大学 | Fat liquoring device and fat liquoring method thereof |
| CN115458420A (en) * | 2022-09-16 | 2022-12-09 | 惠州市则成技术有限公司 | Ball mounting process for IC carrier plate |
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| CN203470281U (en) * | 2013-09-13 | 2014-03-12 | 潍坊胜达塑胶有限公司 | Scraping device for release film coating |
| JP2015150503A (en) * | 2014-02-14 | 2015-08-24 | 大志 金原 | Putty spatula |
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2015
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| SU1330282A1 (en) * | 1985-11-26 | 1987-08-15 | Предприятие П/Я Г-4744 | Nozzle for applying viscous materials |
| JPH11262729A (en) * | 1998-03-16 | 1999-09-28 | Sakura Color Prod Corp | Method and tool for coat repairing |
| US20040137261A1 (en) * | 2000-12-07 | 2004-07-15 | Allan Lunnerfjord | Doctor or coater blade and method in connection with its manufacturing |
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| CN101222982A (en) * | 2005-07-22 | 2008-07-16 | 美国石膏公司 | Taping knife with offset handle |
| CN201082407Y (en) * | 2007-08-24 | 2008-07-09 | 上海三菱电梯有限公司 | Tool for coating silicone grease |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111845026A (en) * | 2020-07-03 | 2020-10-30 | 许世璋 | Screen printing plate for printing special-shaped products and manufacturing method thereof |
| CN113578644A (en) * | 2021-07-20 | 2021-11-02 | 上海纳米技术及应用国家工程研究中心有限公司 | Auxiliary device for multilayer coating of lithium battery pole pieces |
| CN113695189A (en) * | 2021-08-16 | 2021-11-26 | 清华大学 | Fat liquoring device and fat liquoring method thereof |
| CN113695189B (en) * | 2021-08-16 | 2023-02-28 | 清华大学 | Greasing device and greasing method thereof |
| CN115458420A (en) * | 2022-09-16 | 2022-12-09 | 惠州市则成技术有限公司 | Ball mounting process for IC carrier plate |
| CN115458420B (en) * | 2022-09-16 | 2024-04-02 | 惠州市则成技术有限公司 | Ball mounting process of IC carrier plate |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151202 |