CN108226729A - High-precision thin-film electro weak point test instrument - Google Patents
High-precision thin-film electro weak point test instrument Download PDFInfo
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- CN108226729A CN108226729A CN201810104242.3A CN201810104242A CN108226729A CN 108226729 A CN108226729 A CN 108226729A CN 201810104242 A CN201810104242 A CN 201810104242A CN 108226729 A CN108226729 A CN 108226729A
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- Prior art keywords
- electrode
- copper
- weak point
- test instrument
- copper roll
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A kind of high-precision thin-film electro weak point test instrument of the present invention including rack (1), by copper roller (2) of the copper roll shaft (3) in rack (1) and is arranged on the electrode assemblies being slidably electrically connected with copper roll shaft (3) of rack (1) side；The copper roll shaft (3) is rotatably connected by copper roller bearing (4), copper roller bearing insulating base (5) in insulation and copper roll bearing seat (6), and the copper roll bearing seat (6) is connected by copper roll bearing seat fixed screw (7) and rack (1)；The electrode assemblies include metab (8) and the electrode guide sleeve (9), compression spring bayonet lock (10) and the binding post (11) that are symmetrically installed on metab (8).Sampling resistor one end of the present invention is electrically connected with the binding post (11) of electrode assemblies, other end ground connection, and measuring accuracy is high.
Description
Technical field
It is more particularly to a kind of high the present invention relates to a kind of electric weak point test instrument of detecting electric plastic film electric property
The thin-film electro weak point test instrument of precision.
Background technology
It is existing electrically to generally comprise sample roller, conductive rubber slab with plastic film electricity weak point test instrument（Connect high positive pressure
Pole）, electrode copper roller（High voltage negative that is, ground connection）, wind-up roll, electrode roller front end is at least provided with a nip rolls, after electrode roller
End is formed at least provided with a guide roller and control section.Its operation principle is when wind-up roll drives one on sample roller
The film of fixed width degree passes through electrode roller, is arranged on the equipotential conductive rubber slab flexibility and film of electrode roller upper end one fixed width
It contacts, is applied a voltage on film in x wire.Conductive rubber slab（High-voltage positive electrode）, mobile film, electrode roller（High pressure is born
Pole that is, ground connection）A high tension loop is constituted, the leakage current of this high tension loop becomes with mobile film, when film
There is weakness at place（Flaw）When, the leakage current of this high tension loop can become larger suddenly, collect and this become larger suddenly in high tension loop
Leakage current that is, test to thin-film electro weakness, it is exactly such a thin-film electro weak point test instrument that CN201017020Y is disclosed.
Its electrode copper roller is directly grounded by shaft and bearing with rack（High voltage negative）, the method for acquiring leakage current is in High voltage output
Circuit accesses current sensor, and the weak voltage signals of current sensor sensing are input to the processors such as microcontroller or PLC, are used for
Judge whether film has the presence of electric weakness, since current sensor precision and sensitivity are low, directly affect the test essence of instrument
Degree.
Invention content
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of high-precision thin-film electro weak point test instrument, electricity
Pole copper roller is isolated by bearing insulation seat with rack, and electrode copper roller is not directly grounded, and electrode roller is grounded by sampling resistor（High pressure
Cathode）, the leakage current that high tension loop generates during test generates the voltage signal for meeting required precision on sampling resistor, will meet
The voltage signal of required precision is input to the processors such as microcontroller or PLC, for judging whether film has the presence of electric weakness, surveys
Precision is tried to improve.
Technical solution：
To achieve the above object, the present invention adopts the following technical scheme that：Including rack, pass through the rack-mounted copper of copper roll shaft
Roller and the electrode assemblies being slidably electrically connected with copper roll shaft for being arranged on rack side；The copper roll shaft by copper roller bearing,
Copper roller bearing insulating base is rotatably connected in insulation with copper roll bearing seat, and the copper roll bearing seat is fixed by copper roll bearing seat
Screw is connected with rack.
Further, the electrode assemblies include metab and the symmetrical electrode guide sleeve being installed on metab, pressure
Spring bayonet lock and binding post；The electrode of connected electrode cable is provided in the electrode guide sleeve, between the electrode and electrode guide sleeve are in
Gap coordinates；The electrode compression spring that top pressure electrode makes it be in close contact with copper roll shaft is provided on the compression spring bayonet lock, the electrode is led
Line is affixed to binding post.
Further, the metab is connected in by metab fixed screw on insulator foot in annular shape.
Further, the insulator foot is connected in by insulator foot fixed screw in copper roll bearing seat in annular shape.
Further, the metab symmetrically offer for insulator foot fixed screw by U-type groove.
Further, the metab fixed screw and the setting in a certain angle of insulator foot fixed screw.
Preferably, the electrode is arranged to the arc shaped surface radially consistent with copper roll shaft with copper roll shaft contact surface.
Preferably, the electrode material selects graphite.
Preferably, the electrode compression spring is plane scroll spring.
Compared with the prior art, beneficial effects of the present invention：
1. bronze medal roll shafts of the invention pass through bearing insulation seat and rack（Rack earth）Insulation, 2. electrode assemblies pass through bottom of insulating
Seat also with rack（Rack earth）Insulation；Copper roll shaft is in closely slidably to be in electrical contact with electrode assemblies.Sampling resistor one end with
The binding post electrical connection of electrode assemblies, other end ground connection.The leakage current that high tension loop generates during test generates electricity in sampling resistor
Signal is pressed, according to formula：U（Voltage）=R（Resistance）*I（Electric current）, the sampling resistor of appropriate resistance value is selected, can generate and meet precision
It is required that voltage signal, which is input to the processors such as microcontroller or PLC, it is thin for judging
Whether film has the presence of electric weakness, and this leakage current sample mode greatly improves measuring accuracy.
Description of the drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is right view of the present invention；
Fig. 3 is vertical view of the present invention；
Fig. 4 is the present invention in leakage current sampling circuit schematic diagram
Wherein, 1 rack, 2 bronze medal rollers, 3 bronze medal roll shafts, 4 bronze medal roller bearings, 5 bronze medal roller bearing insulating bases, 6 bronze medal roll bearing seats, 7 bronze medal roller bearings
Seat fixed screw, 8 metabs, 9 electrode guide sleeves, 10 compression spring bayonet locks, 11 binding posts, 12 insulator foots, 81 metabs are fixed
Screw, 90 electrodes, 91 electrode cables, 101 electrode compression springs, 121 insulator foot fixed screws, 200 be apparatus of the present invention.
Specific embodiment：
As shown in Figs. 1-3, a kind of high-precision thin-film electro weak point test instrument of the present invention, including rack (1), passes through copper roll shaft (3)
Copper roller (2) in rack (1) and the electrode being slidably electrically connected with copper roll shaft (3) for being arranged on rack (1) side
Assembly；The copper roll shaft (3) can in insulation and copper roll bearing seat (6) by copper roller bearing (4), copper roller bearing insulating base (5)
Rotation connection, the copper roll bearing seat (6) are connected by copper roll bearing seat fixed screw (7) and rack (1)；The electrode assemblies
Including metab (8) and the electrode guide sleeve (9) being symmetrically installed on metab (8), compression spring bayonet lock (10) and binding post
(11), the electrode (90) of connected electrode cable (91) is provided in the electrode guide sleeve (9), the electrode (90) is led with electrode
(9) are covered in clearance fit, and being provided with top pressure electrode (90) on the compression spring bayonet lock (10) makes what it was in close contact with copper roll shaft (3)
Electrode compression spring (101), the electrode cable (91) are affixed to binding post (11).
The metab (8) is connected in by metab fixed screw (81) on insulator foot (12) in annular shape；
The insulator foot (12) is connected in by insulator foot fixed screw (121) in copper roll bearing seat (6) in annular shape.
The metab (8) symmetrically offer for insulator foot fixed screw (121) by U-type groove.
The metab fixed screw (81) and insulator foot fixed screw (121) setting in a certain angle.
To increase the electrode (90) and copper roll shaft (3) contact surface, the electrode (90) is set with copper roll shaft (3) contact surface
The radially consistent arc shaped surface of Cheng Yutong roll shafts (3).
To reduce the abrasion of copper roll shaft (3), electrode (90) the material selection graphite.
The electrode compression spring (101) is plane scroll spring.
A kind of above-mentioned high-precision thin-film electro weak point test instrument works in this way：
The voltage that high pressure generator generates is output to conductive rubber slab, electric rubber slab and thin film flexible by internal current-limiting resistance
Contact, applies a voltage to film side, film opposite side is contacted with electrode copper roller (2), and electrode copper roller (2) passes through copper roll shaft
(3) with electrode always in being in close contact, sampling resistor one end is electrically connected with the binding post (11) of electrode assemblies, other end ground connection（It is high
Press cathode）.So high pressure negative and positive pole forms a voltage through current-limiting resistance, film equivalent resistance, sampling resistor to high voltage negative
Circuit, tested film is in the top electrode for being applied with voltage（Conductive rubber slab）Lower electrode（Electrode copper roller）Between move, normally
Film（When i.e. without electric weakness）Its insulation resistance value is very big（It is 103Ω grades of M）, the leakage current in voltage circuit is microampere order,
The voltage generated on sampling resistor is up to millivolt level, when there is weakness in film somewhere（Flaw）When, the leakage current meeting of this high tension loop
Be mutated milliampere grade, the voltage generated on sampling resistor up to volt grade, such sampled voltage meet enough microcontroller or
The required precision of the processors such as PLC, therefore electric weakness accuracy of detection greatly improves.
Claims (9)
1. a kind of high-precision thin-film electro weak point test instrument, including rack (1), by copper roll shaft (3) in rack (1)
Copper roller (2) and the electrode assemblies being slidably electrically connected with copper roll shaft (3) for being arranged on rack (1) side；The copper roll shaft
(3) it is rotatably connected by copper roller bearing (4), copper roller bearing insulating base (5) in insulation and copper roll bearing seat (6), the copper
Roll bearing seat (6) is connected by copper roll bearing seat fixed screw (7) and rack (1).
2. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The electrode assemblies packet
Electrode guide sleeve (9), compression spring bayonet lock (10) and the binding post for including metab (8) and being symmetrically installed on metab (8)
(11)；The electrode (90) of connected electrode cable (91) is provided in the electrode guide sleeve (9), the electrode (90) is led with electrode
(9) are covered in clearance fit；Top pressure electrode (90) is provided on the compression spring bayonet lock (10) makes what it was in close contact with copper roll shaft (3)
Electrode compression spring (101), the electrode cable (91) are affixed to binding post (11).
3. high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The metab (8) is in
Annular shape is connected in by metab fixed screw (81) on insulator foot (12).
4. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The insulator foot
(12) it in annular shape, is connected in copper roll bearing seat (6) by insulator foot fixed screw (121).
5. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The metab
(8) it is symmetrical offer for insulator foot fixed screw (121) by U-type groove.
6. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The metab is consolidated
Determine screw (81) and insulator foot fixed screw (121) setting in a certain angle.
7. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The electrode (90) with
Copper roll shaft (3) contact surface is arranged to the arc shaped surface radially consistent with copper roll shaft (3).
8. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The electrode
(90) material selection graphite.
9. a kind of high-precision thin-film electro weak point test instrument according to claim 1, it is characterized in that：The electrode compression spring
(101) it is plane scroll spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810104242.3A CN108226729B (en) | 2018-02-02 | 2018-02-02 | High-precision film electric weak point tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810104242.3A CN108226729B (en) | 2018-02-02 | 2018-02-02 | High-precision film electric weak point tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108226729A true CN108226729A (en) | 2018-06-29 |
| CN108226729B CN108226729B (en) | 2020-02-18 |
Family
ID=62669267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810104242.3A Active CN108226729B (en) | 2018-02-02 | 2018-02-02 | High-precision film electric weak point tester |
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| Country | Link |
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| CN (1) | CN108226729B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797700A (en) * | 1993-08-06 | 1995-04-11 | Nippon Light Metal Co Ltd | Conducting jig for plating of printing roll |
| KR20090111929A (en) * | 2008-04-23 | 2009-10-28 | 현대중공업 주식회사 | Device reducing electric contact defeats of plasma cutting machine's slip ring |
| CN201707420U (en) * | 2010-06-09 | 2011-01-12 | 四川东材科技集团股份有限公司 | Electroweak point test device capable of adjusting width of capacitance film |
| CN103056503A (en) * | 2012-12-17 | 2013-04-24 | 广州松兴电器有限公司 | Seam welder rolling wheel electrode holder device |
| CN203170747U (en) * | 2013-04-12 | 2013-09-04 | 大连理工（营口）新材料工程中心有限公司 | Rolling electrode device |
| CN203798968U (en) * | 2014-04-10 | 2014-08-27 | 安徽铜峰电子股份有限公司 | AD module output-based electric weakness point testing statistical system of thin film |
| CN107364156A (en) * | 2017-08-10 | 2017-11-21 | 合肥科烨电物理设备制造有限公司 | A kind of electrode system for film surface coating film treatment |
-
2018
- 2018-02-02 CN CN201810104242.3A patent/CN108226729B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0797700A (en) * | 1993-08-06 | 1995-04-11 | Nippon Light Metal Co Ltd | Conducting jig for plating of printing roll |
| KR20090111929A (en) * | 2008-04-23 | 2009-10-28 | 현대중공업 주식회사 | Device reducing electric contact defeats of plasma cutting machine's slip ring |
| CN201707420U (en) * | 2010-06-09 | 2011-01-12 | 四川东材科技集团股份有限公司 | Electroweak point test device capable of adjusting width of capacitance film |
| CN103056503A (en) * | 2012-12-17 | 2013-04-24 | 广州松兴电器有限公司 | Seam welder rolling wheel electrode holder device |
| CN203170747U (en) * | 2013-04-12 | 2013-09-04 | 大连理工（营口）新材料工程中心有限公司 | Rolling electrode device |
| CN203798968U (en) * | 2014-04-10 | 2014-08-27 | 安徽铜峰电子股份有限公司 | AD module output-based electric weakness point testing statistical system of thin film |
| CN107364156A (en) * | 2017-08-10 | 2017-11-21 | 合肥科烨电物理设备制造有限公司 | A kind of electrode system for film surface coating film treatment |
Non-Patent Citations (1)
| Title |
|---|
| 钱立文: "薄膜电弱点测试仪的研制", 《电子工业专用设备》 * |
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| CN108226729B (en) | 2020-02-18 |
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