CN101291564B - Manufacturing process of resistor plate - Google Patents
Manufacturing process of resistor plate Download PDFInfo
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- CN101291564B CN101291564B CN2008100288475A CN200810028847A CN101291564B CN 101291564 B CN101291564 B CN 101291564B CN 2008100288475 A CN2008100288475 A CN 2008100288475A CN 200810028847 A CN200810028847 A CN 200810028847A CN 101291564 B CN101291564 B CN 101291564B
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Abstract
The invention relates to a method for producing a resistance board, the resistance board and application of the same. In the method, a substrate is taken as a base and attached with a surface electrode film and a resistance film; A. an electrode wire screen is placed on a polyimide film substrate, a layer of electrode sizing agent is printed in the recession of the wire screen by a screen printing method, thereby forming the surface electrode film; B. the resistance film is formed through printing resinous electrode slurry by the screen printing method on the surface electrode film which is the product in step A; and the product with the two films is put into a tunnel kiln for curing, and is divided into a plurality of units along the electrode contraposition line. The resistance board comprises the substrate, the surface electrode film and the resistance film from the inside to the outside, wherein, the substrate is the polyimide film substrate; the surface electrode film is in an open but semienclosed state and the electrode film is cut off with each other; and the resistance film is lapped on the surface electrode film. The resistance board has long service life due to wear resistance and high linearity when used in a throttle position sensor.
Description
Technical field
The present invention relates to a kind of manufacture method of resistance board, the resistance board and the application thereof of gained, relate in particular to a kind of manufacture method of resistance board of apply to Section valve position sensor and the resistance board of gained.
Background technology
In order to adapt to the environmental requirement of automobile, motorcycle, present vehicle fuel both domestic and external system changes the EFI epoch (being electronic fuel injection system) into by the original carburetor epoch, and China is domestic also will to finish motorcycle by the transformation of carburetor to electronic fuel injection system in recent years.Throttle position sensor is as an important sensor of electric injection system, be to be used for detecting in real time the throttle valve body open angle of vehicle motor when idling or operating state, and with this open angle transfer of data to electronic control unit (ECU), by ECU according to these data, calculating and adjusting fuel injector and valve adjuster valve reach suitable ratio state, thereby guarantee that fuel oil and Air mixing ratio can remain on the environmental protection standard scope of completing combustion forever.The resistance board product is as the critical component in the throttle position sensor, can be with the open angle of throttle valve body, in the mode of resistance linear change, be converted into the linear change of output voltage, realized that successfully the mechanical displacement signal of throttle valve body is converted into the function of analog voltage signal.
The general technology of resistance board that is used for throttle position sensor at present is: the fixed carbon resister body is to print to be created on to cover the copper pcb board, covers the copper pcb board and need be covered with the layer of copper electrode layer in advance, as the link of resistance and the link of output.Print fixed carbon resister covering on the copper pcb board again, fixed carbon resister needs to contact with the copper layer that covers on PCB and the pcb board.But there is following problem in this design:
1, it is relatively poor to cover surface plane roughness, angularity and the thickness and precision of copper pcb board, after making fixed carbon resister be printed onto on the pcb board, the plane roughness of resistive film is relatively poor, when causing brush on resistive layer, to slide, coefficient of friction between brush and the resistive layer is big, resistive layer is scraped by brush easily, greatly the life-span that has influence on product of degree.
2, the contact between resistive layer and the brush film is poor, causes the output linearity of product bad, can not well react the linear change of throttle valve body and the operating mode of engine.
3, cover the copper layer and generate by two kinds of different technologies, cover the material of copper layer and the material of fixed carbon resister and have bigger hot coefficient of dilatation with carbon film.And throttle position sensor is mounted in the engine next door of automobile (motorcycle), and variations in temperature is bigger.The link of two kinds of materials of these two kinds of hot coefficient of dilatations of difference is subjected to variations in temperature easily and causes to cover to produce between copper layer and the fixed carbon resister rete and peel off in the long-term work process, influences the life-span of product.
Chinese patent CN1842253 discloses a kind of production technology that is used for the multi-layer resistive plate of mounted on surface, it is characterized in that: the described production technology that is used for the multi-layer resistive plate of mounted on surface comprises following step: a. figure and boring documenting; B. on corestock, bore periphery holes, carry out internal layer graphic making and internal layer etching then; C. carry out lamination after the brown, be pressed into making sheet; D. projection is carried out holing the second time and milling burr after boring location hole; E. behind the heavy copper plate is put in order in making sheet and electroplated, finish and carry out graphic plating after outer graphics is made; F. making sheet is carried out alkali etching and kept the tin layer, carry out welding resistance lettering symbol after the cleaning; This resistance board resistance wears no resistance.
Summary of the invention
The problem that the present invention need solve provides that a kind of resistance resistance to wear is good, the linearity is good, the production method of long-life resistance board and the resistance board of gained; The present invention also provides the application of this resistance board in addition.
Technical scheme of the present invention is: a kind of system of making method of resistance board, based on substrate, attaching surface electrode rete, resistive layer on substrate, A, on the polyimide film substrate discharge electrode silk screen, utilize method for printing screen to stamp one deck electrode slurry, form the surface electrode rete at the recess of silk screen; B, on the product surface electrode rete of steps A, utilize method for printing screen printing resin resistance slurry to form resistive layer, resistive layer is overlapped on the surface electrode rete; Above-mentioned product with two tunic layers is put in the continuous tunnel furnace solidifies, along electrode pair bit line burst, be divided into several unit again.
Described steps A can also be included on the product surface electrode rete, utilizes method for printing screen printing resin protection slurry, forms the step of resin protection film layer.The product that will have surface electrode rete, resin protection film layer and resistive layer is put in the continuous tunnel furnace and solidifies, curing temperature≤230 ℃.Described polyimide film thickness is 0.125mm or 0.25mm.Described electrode slurry is to be printed on the substrate shiny surface.The resin system that described electrode slurry, fixed carbon resister slurry, resin protection slurry use is a phenolic resin system; with this system is organic main body; as the function phase, after both organically combine, have good levelability, thixotropy, adhesive force and resistance to wear with silver powder.Be complementary with the hot coefficient of dilatation of polyimide film, can satisfy the instructions for use of polyimide film slurry.The organic main body of fixed carbon resister slurry and protection slurry also is a phenolic resins, and different with electrode slurry is, the fixed carbon resister slurry is to be as the function phase with carbon dust with glass dust as function phase, protection slurry.The material of described electrode rete, resistive layer, resin protection film layer all is nanometer materials.They are identical with polyimide film substrate heat coefficient of dilatation, be taken up in order of priority printing, solidify simultaneously, successfully solved the working life of throttle position sensor and the problem of linear difference, satisfy the instructions for use to throttle position sensor of high, medium and low each grade automobile (motorcycle).
Resistance board by said method makes comprises substrate, surface electrode rete and resistive layer from inside to outside successively, it is characterized in that: described substrate is the polyimide film substrate; Described surface electrode rete is the semiclosed shape of non-closure, and the electrode rete disconnects each other; Described resistive layer is to be overlapped on the surface electrode rete.
On described surface electrode rete, also has one deck resin protection film layer.The material of described electrode rete, resistive layer, resin protection film layer all is nanometer materials.The polyimide film substrate has surface of good planar light slippery, has the property of rubbing characteristics, in printing process, polyimide film can fit tightly with the high printing microscope carrier of smooth precision under the pull of vacuum effect of printing machine, has guaranteed the thickness and the evenness of resistive layer.Polyimide film has only 0.125mm or 0.25mm, the thickness and precision of film is quite high, can well guarantee the thickness and precision of resistance printing rete, the coefficient of dilatation of polyimide film approaches resin heat curing-type electric slurry, can with resin thermosetting matched well.
Above-mentioned resistance board is used for the application of throttle position sensor, obtain the continually varying resistance value by brush by the slip of certain angle on potentiometer, the voltage of corresponding output linear change, thereby obtain the signal of throttle valve body openness accurately, electronic control unit (ECU) can be according to this signal, adjust the flow of fuel oil according to predefined proportion requirement, thereby guarantee the completing combustion of fuel oil and Air mixing gas energy, reduce discharge of harmful gases, with cruising and the environment protection emission requirement that adapts to automobile.Because the planarization and the resistance to wear of the resistive layer of this resistance board are good, and the connection lifetime of resistive layer and electrode rete is long, thereby have successfully improved the working life and the linearity of throttle position sensor.This product output linearity≤2%, the pairing resistance value of different automobile types, its Standard resistance range can be different.Can satisfy the instructions for use of high, medium and low each grade automobile (motorcycle).When this resistance board was used for the application of throttle position sensor, the wear-resistant index of the friction durability of its single resistance board was: friction durability 8,000,000 times during silver-colored cadmium brush; Can reach more than 1,000 ten thousand times friction durability during platinum alloy silk brush.Because this resistance board is the core component of throttle position sensor, so also be meant friction durability of throttle position sensor in fact the friction durability of resistance board.
Description of drawings:
Fig. 1 is the front view of single resistance board; Fig. 2 electrode print pattern; Fig. 3 protects print pattern; Fig. 4 resistance print pattern; Wherein, 1 substrate, 2 electrode retes, 3 protection printing retes, 4 resistance printing rete.
Embodiment
Purport of the present invention be by with polyimide film material as substrate; electrode slurry, protective film slurry, the resistance slurry of selecting for use the bloated coefficient of hot Peng to mate very much; utilize the technology of silk screen printing to make resistance board; guarantee the planarization of resistive layer of resistance board and the connection lifetime of resistance to wear and resistive layer and electrode rete, thereby successfully improved the working life and the linearity of throttle position sensor.Below in conjunction with embodiment content of the present invention is described in further detail, mentioned content is not a limitation of the invention among the embodiment, and wherein the selection of each parameter can be suited measures to local conditions and the result be there is no substantial effect in the method.At first, the basic scheme of summary the inventive method: a kind of manufacture method of resistance board, based on substrate 1, attaching surface electrode rete 2, resistive layer 4 on substrate 1, A, on polyimide film substrate 1 the discharge electrode silk screen, utilize method for printing screen to stamp one deck electrode slurry, form surface electrode rete 2 at the recess of silk screen; B, on the product surface electrode rete 2 of steps A, utilize method for printing screen printing resin resistance slurry to form resistive layer 4, resistive layer 4 is overlapped on the surface electrode rete 2; Perhaps steps A also is included on the product surface electrode rete 2, utilizes method for printing screen printing resin protection slurry, forms the step of resin protection film layer 3.Above-mentioned product with trilamellar membrane layer is put in the continuous tunnel furnace solidifies, curing temperature≤230 ℃.Described polyimide film substrate thickness is 0.125mm or 0.25mm.Described electrode slurry is to be printed on substrate 1 shiny surface.The resin system that described electrode slurry, fixed carbon resister slurry, resin protection slurry use is a phenolic resin system.The material of described electrode rete 2, resistive layer 4, resin protection film layer 3 all is nanometer materials.
The resistance board of above-mentioned preparation method's gained comprises substrate 1, surface electrode rete 2 and resistive layer 4 from inside to outside successively, and described substrate is the polyimide film substrate; Described surface electrode rete is the semiclosed shape of non-closure, and electrode rete 2 disconnects each other; Described resistive layer 4 is to be overlapped on the surface electrode rete.One deck resin protection film layer 3 can also be arranged on described surface electrode rete 2.When described resistance board is used for throttle position sensor, its resistance wear-resistant index: friction durability 8,000,000 times during silver-colored cadmium brush; Can reach more than 1,000 ten thousand times friction durability during platinum alloy silk brush.
Claims (6)
1. the manufacture method of a resistance board, based on substrate, attaching surface electrode rete, resistive layer on substrate is characterized in that:
A, on the polyimide film substrate discharge electrode silk screen, utilize method for printing screen to stamp one deck electrode slurry at the recess of silk screen, form the surface electrode rete; Described polyimide film thickness is 0.125mm or 0.25mm;
B, on the product surface electrode rete of steps A, utilize method for printing screen printing resin resistance slurry to form resistive layer, resistive layer is overlapped on the surface electrode rete;
Above-mentioned product with two tunic layers is put in the continuous tunnel furnace solidifies, along electrode pair bit line burst, be divided into several unit again.
2. preparation method according to claim 1 is characterized in that: described steps A also is included on the product surface electrode rete, utilizes method for printing screen printing resin protection slurry, forms the step of resin protection film layer.
3. preparation method according to claim 2 is characterized in that: the product that will have surface electrode rete, resin protection film layer and resistive layer is put in the continuous tunnel furnace and solidifies, curing temperature≤230 ℃.
4. preparation method according to claim 3 is characterized in that: described electrode slurry is to be printed on the substrate shiny surface.
5. preparation method according to claim 4 is characterized in that: the resin system that described electrode slurry, fixed carbon resister slurry, resin protection slurry use is a phenolic resin system.
6. preparation method according to claim 5 is characterized in that: the material of described electrode rete, resistive layer, resin protection film layer all is nanometer materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100288475A CN101291564B (en) | 2008-06-13 | 2008-06-13 | Manufacturing process of resistor plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100288475A CN101291564B (en) | 2008-06-13 | 2008-06-13 | Manufacturing process of resistor plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101291564A CN101291564A (en) | 2008-10-22 |
| CN101291564B true CN101291564B (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100288475A Active CN101291564B (en) | 2008-06-13 | 2008-06-13 | Manufacturing process of resistor plate |
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| CN (1) | CN101291564B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097192B (en) * | 2010-12-17 | 2012-05-23 | 江苏浩峰汽车附件有限公司 | Method for producing printed resistor |
| CN103957665A (en) * | 2014-04-29 | 2014-07-30 | 吉安市华阳电子有限公司 | High-frequency microwave PCB |
| CN104599796B (en) * | 2014-12-25 | 2017-09-29 | 广东风华高新科技股份有限公司 | Resistance board and preparation method thereof |
| CN105813383B (en) * | 2016-03-16 | 2018-10-26 | 杭州宝临印刷电路有限公司 | A kind of carbon film wiring board of printing primary element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415607A (en) * | 1982-09-13 | 1983-11-15 | Allen-Bradley Company | Method of manufacturing printed circuit network devices |
| CN1578593A (en) * | 2003-07-03 | 2005-02-09 | 新光电气工业株式会社 | Wiring board provided with a resistor and process for manufacturing the same |
-
2008
- 2008-06-13 CN CN2008100288475A patent/CN101291564B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415607A (en) * | 1982-09-13 | 1983-11-15 | Allen-Bradley Company | Method of manufacturing printed circuit network devices |
| CN1578593A (en) * | 2003-07-03 | 2005-02-09 | 新光电气工业株式会社 | Wiring board provided with a resistor and process for manufacturing the same |
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| Publication number | Publication date |
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| CN101291564A (en) | 2008-10-22 |
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