CN103983906A - Detection method of insulation property of plastic part with metal insert - Google Patents
Detection method of insulation property of plastic part with metal insert Download PDFInfo
- Publication number
- CN103983906A CN103983906A CN201410257521.5A CN201410257521A CN103983906A CN 103983906 A CN103983906 A CN 103983906A CN 201410257521 A CN201410257521 A CN 201410257521A CN 103983906 A CN103983906 A CN 103983906A
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- CN
- China
- Prior art keywords
- mold insert
- metal insert
- detection method
- leakage current
- inserted piece
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a detection method of the insulation property of a plastic part with a metal insert. The detection method is characterized in that before the metal insert is assembled at the next step, the exposed metal part on the metal insert is subjected to current leakage detection, and the metal insert is assembled after the metal insert is up to standard. According to the invention, the metal insert is detected before being assembled, and a switch is assembled by utilizing the qualified metal insert, so that the percent of pass of the assembled products can be improved effectively.
Description
Technical field
The present invention relates to a kind of method that detects metal inserted piece inherent vice.
Background technology
The contact of electric switch is all by the formation of partly sliding of the bare metal of metal inserted piece, therefore the insulativity of mold insert just requires strictlyer, if there is resistance between mold insert interior metal sheet, switch performance will entanglement so, there is hidden danger, therefore in the detection to mold insert, be even more important.Mold insert is a kind of working of plastics belonging to covered with gold leaf, by conventional two classes that are divided into the mold insert of thermoplastic and the mold insert of thermosets of processing.For plastic metalwork, to adopt and the mode such as thrust and reach the various loop requirements of switch, and after thrusting, likely occur not thrusting completely, or the insulativity of plastics own not, have scrap metal bits to exist etc., and human eye is often can not identify, and causes product failure.To the detection of metal inserted piece, be break-make detection method in the past, and when thrusting between contact direct short-circuit or insulation resistance, in tens Europe, just can be detected when following, the break-make detection method slightly bigger to insulation resistance just cannot detect out of order mold insert.
Summary of the invention
The technical problem to be solved in the present invention: for the problems referred to above, the invention provides a kind of method before switch assembling, metal inserted piece wherein being detected, have high qualification rate with the switch after guaranteeing to assemble.
Invention technical scheme:
A plastic part insulativity detection method with metal inserted piece, is characterized in that: before metal inserted piece carries out next step assembling, the bare metal on metal inserted piece is partly carried out to leakage current test, qualified assembling more afterwards.
Adopted high voltage DC 500V to be applied between every two pins of mold insert, whether the leakage current of testing between every two pins exceeds standard
Beneficial effect of the present invention:
Find after deliberation, causing the underproof most reasons of switch is all because metal inserted piece is defective, will before metal inserted piece assembling, it detected, and uses qualified metal inserted piece to carry out the qualification rate that switch assembling can improve switch greatly.
To the detection of metal inserted piece, be break-make detection method in the past, and when thrusting between contact direct short-circuit or insulation resistance, in tens Europe, just can be detected when following, the break-make detection method slightly bigger to insulation resistance just cannot detect out of order mold insert.For making mold insert insulativity reach requirement, now adopted high voltage DC 500V to be applied between every two pins of mold insert, and keep certain hour (being pressure-resistant time), whether the leakage current of test mold insert exceeds standard, high-tension apparatus is leakage current between monitoring mold insert pin automatically, and equipment alarm when leakage current is greater than setting value, illustrates that mold insert is defective, otherwise when leakage current is less than setting value, illustrate that mold insert is qualified, insulation resistance is qualified.The detection of mold insert completes detection by automation equipment.Detect principle and be by detecting leakage current between every two pin of mold insert whether within the scope of the leakage current of regulation, whether to reach, to detect the insulativity of mold insert qualified.
embodiment:
Before electric switch assembling, metal inserted piece is wherein carried out to detection of electrical leakage, for making mold insert insulativity reach requirement, now adopted high voltage DC 500V to be applied between every two pins of mold insert, and to keep certain hour (be pressure-resistant time, 3-5 second), whether the leakage current of test mold insert exceeds standard, high-tension apparatus is leakage current between monitoring mold insert pin automatically, equipment alarm when leakage current is greater than setting value, illustrate that mold insert is defective, otherwise when leakage current is less than setting value, illustrate that mold insert is qualified, insulation resistance is qualified.
, by high voltage, mold insert is carried out to voltage-withstand test, so just higher to the requirement of checkout equipment, guaranteed tester's safety, this high-tension apparatus is by Logic control module, high-pressure modular, Pneumatic module, the totally enclosed higher-pressure region that mechanical clamp module forms, placing part district, operation control area, the compositions such as indication panel, during use equipment, switch on power and source of the gas, adjustable pressure is between 4 ~ 6kgf/cm, mold insert to be measured is placed in to placing part district, click device start button, cylinder is dragged into totally enclosed higher-pressure region by part and carries out voltage-withstand test, operating process has guaranteed the isolation of people and high-pressure area, guaranteed personal safety, to the pressure-resistant time of mold insert, can regulate by timer on indication panel, the number of pressure-resistant time is to set according to process requirements, in test pressure-resistant time inner high voltage module, monitor in real time the leakage current of mold insert, when leakage current is greater than setting value, high-pressure modular will be reported to the police, start module pins defective mold insert simultaneously, wait for that operating personnel process, process defective mold insert for pressing device reset button, equipment will be sent unacceptable product and place it in unacceptable product region, to the leakage current requirement of mold insert, can set leakage current scope by high-pressure modular, alarm free during if mold insert detects, illustrate that mold insert is qualified, Pneumatic module can be carried out sign to qualified mold insert, so that and the difference of unacceptable product, avoid sneaking into of unacceptable product.
There is no equipment operating flow process for opening tooling device and high-tension apparatus power supply, connect source of the gas, check that whether every settings such as leakage current, output voltage, pressure-resistant time correct, or with exemplar, detect an equipment and see whether meet the requirements, during detection by mold insert put correctly on equipment, click start button, equipment will detect mold insert automatically, if approved apparatus will mold insert be got ready and be automatically reset, when mold insert is defective, equipment alarm also pins mold insert, must pin reset button and reset after 1 second.Equipment has qualified and defective counting assembly, and manually detecting pattern and autosensing mode are selected, and while automatically detecting, equipment completes detection automatically, high-pressure area and human body isolation, operation safety and reliability.
Claims (2)
1. with a plastic part insulativity detection method for metal inserted piece, it is characterized in that: before metal inserted piece carries out next step assembling, the bare metal on metal inserted piece is partly carried out to leakage current test, qualified assembling more afterwards.
2. the plastic part insulativity detection method with metal inserted piece according to claim 1, is characterized in that: adopted high voltage DC 500V to be applied between every two pins of mold insert, whether the leakage current of testing between every two pins exceeds standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257521.5A CN103983906A (en) | 2014-06-11 | 2014-06-11 | Detection method of insulation property of plastic part with metal insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257521.5A CN103983906A (en) | 2014-06-11 | 2014-06-11 | Detection method of insulation property of plastic part with metal insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103983906A true CN103983906A (en) | 2014-08-13 |
Family
ID=51275951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410257521.5A Pending CN103983906A (en) | 2014-06-11 | 2014-06-11 | Detection method of insulation property of plastic part with metal insert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103983906A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200307139A (en) * | 2002-05-17 | 2003-12-01 | Nidec Read Corp | Apparatus and method for examining insulation of circuit board |
| JP2004108817A (en) * | 2002-09-13 | 2004-04-08 | Denso Corp | Defect detection method for insulator |
| CN1504754A (en) * | 2002-12-05 | 2004-06-16 | 宏达国际电子股份有限公司 | Apparatus for measuring leakage current and insulation impedance |
| CN102236087A (en) * | 2011-01-31 | 2011-11-09 | 浙江省电力公司 | Withstand voltage test device and method of three-phase electric energy meter |
| CN102967813A (en) * | 2011-08-31 | 2013-03-13 | 中芯国际集成电路制造(上海)有限公司 | Testing structure and testing method |
-
2014
- 2014-06-11 CN CN201410257521.5A patent/CN103983906A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200307139A (en) * | 2002-05-17 | 2003-12-01 | Nidec Read Corp | Apparatus and method for examining insulation of circuit board |
| JP2004108817A (en) * | 2002-09-13 | 2004-04-08 | Denso Corp | Defect detection method for insulator |
| CN1504754A (en) * | 2002-12-05 | 2004-06-16 | 宏达国际电子股份有限公司 | Apparatus for measuring leakage current and insulation impedance |
| CN102236087A (en) * | 2011-01-31 | 2011-11-09 | 浙江省电力公司 | Withstand voltage test device and method of three-phase electric energy meter |
| CN102967813A (en) * | 2011-08-31 | 2013-03-13 | 中芯国际集成电路制造(上海)有限公司 | Testing structure and testing method |
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Legal Events
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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 |
Application publication date: 20140813 |
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| RJ01 | Rejection of invention patent application after publication |