CN202331071U - Wave soldering wicking time tester - Google Patents
Wave soldering wicking time tester Download PDFInfo
- Publication number
- CN202331071U CN202331071U CN2011203807156U CN201120380715U CN202331071U CN 202331071 U CN202331071 U CN 202331071U CN 2011203807156 U CN2011203807156 U CN 2011203807156U CN 201120380715 U CN201120380715 U CN 201120380715U CN 202331071 U CN202331071 U CN 202331071U
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- China
- Prior art keywords
- port
- probe
- chip microcomputer
- circuit
- wicking time
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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.)
- Expired - Lifetime
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- 238000005476 soldering Methods 0.000 title abstract description 7
- 239000000523 sample Substances 0.000 claims abstract description 34
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 23
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 11
- 239000011521 glass Substances 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Tests Of Electronic Circuits (AREA)
Abstract
The utility model discloses a wave soldering wicking time tester, it includes supply circuit, singlechip, storage circuit, display circuit, first probe and second probe, and this singlechip includes first IO port, second IO port and is used for calculating first IO port with the timer of second IO port on-time, supply circuit storage circuit reaches display circuit respectively with the corresponding port electricity of singlechip is connected, first probe with first IO port with supply circuit's negative pole electricity is connected, the second probe with second IO port electricity is connected. The utility model discloses a wave-soldering wicking time tester has that the flexible operation is simple and easy, measurement accuracy is high, test result shows advantages such as directly perceived.
Description
Technical field
The utility model relates to the equipment that is used for the crest soldered circuit board, especially a kind of crest welding wicking time test appearance.
Background technology
In electronics assembling industry wave-soldering termination process, a lot of welding qualities unusual (like spine, short circuit, do not go up tin etc.) are all relevant in mistake crest welding sequence wicking time length with pcb board.In order to guarantee the welding quality of solder joint on the pcb board, guarantee that production run is smooth and easy, generally require the wicking time of pcb board when crossing the crest welding sequence must satisfy following requirement during production: to have lead welding to meet time 2.5～5s, unleaded 3.5～5s.The wicking timing of at present pcb board being crossed the crest welding sequence has following several kinds of modes:
1, glass plate method.The glass plate that will have scale moves on crest welder reception and registration chain, checks the scale of reserving on the glass plate then, calculates the wicking time through measuring its length and chain speed.This mode is because glass plate wetting poor than actual pcb board, and measuring error is big;
2, temperature curve method of testing.Thereby the furnace temperature tester measuring sensor temperature curve when crossing wave-soldering furnace through specialty draws the element wicking time through computed in software; This method of testing is owing to temperature inertia makes test result can only be accurate to the 1S level greatly; Can not satisfy the requirement of precision measurement; And this test also needs computer and software support, and test is inconvenient, and data presentation is not directly perceived;
3, contact pin method.The socket pin of arranging on perpendicular to the PCB direction of transfer, contact pin two dual-purpose leads couple together, and break off in twos under the normal condition; In case when getting into the crest welding, conducting in twos is when any one pin and Xi Bo disengaging; Circuit breaks off, thereby draws the wicking time through measuring ON time.This test mode is accurate; But test result generally needs computer to handle, and data presentation is not directly perceived, and simultaneously this mode needs specific PCB (be used for contact pin); Test specific solder joint; Can not select arbitrarily pcb board or arbitrarily solder joint test, the various pcb boards when can't simulated field producing are made troubles to on-the-spot test.
Summary of the invention
The utility model technical matters to be solved is, provides that a kind of flexible operation is simple and easy, measuring accuracy is high, the crest of test result intuitive display welding wicking time test appearance.
A kind of crest welding wicking time test appearance that the utility model provides; It comprises feed circuit, single-chip microcomputer, memory circuit, display circuit, first probe and second probe; This single-chip microcomputer comprises an I/O port, the 2nd I/O port and is used to calculate the timer of a said I/O port and said the 2nd I/O port ON time; Said feed circuit, said memory circuit and said display circuit are electrically connected with the corresponding port of said single-chip microcomputer respectively; Said first probe is connected with the negative electricity of a said I/O port and said feed circuit, and said second probe is electrically connected with said the 2nd I/O port.
As the preferred embodiment of technique scheme, said display circuit comprises digital display tube.
As the preferred embodiment of technique scheme, also comprise LED light, this LED light is electrically connected with the corresponding port of said single-chip microcomputer.
As the preferred embodiment of technique scheme, also comprise key control switch, this key control switch is electrically connected with the corresponding port of said single-chip microcomputer.
As the preferred embodiment of technique scheme, said feed circuit comprise power supply, and this power supply is a dry cell.
As the preferred embodiment of technique scheme, said feed circuit comprise power switch, and this power switch is arranged between said power supply and the said single-chip microcomputer.
As the preferred embodiment of technique scheme, also comprise housing, said supply module, said single chip control module, said memory module and said display module are loaded in this housing.
When using the crest welding wicking time test appearance of the utility model, first probe is connected with the tin furnace wall, second probe links to each other with the components and parts pin; Pcb board in the wave-soldering termination process, the components and parts pin before not getting into the tin ripple, first probe and the second not conducting of probe; The 2nd I/O port level of single-chip microcomputer is high, after the components and parts pin is getting into the tin ripple, because the tin ripple of fusion is a conductor; First probe and the second probe conducting, the 2nd I/O port of single-chip microcomputer are connected to ground and become low level, after the components and parts pin leaves the tin ripple; First probe and the second not conducting of probe, the 2nd I/O of single-chip microcomputer is become high level again, and the timer of single-chip microcomputer calculates the low level time of the 2nd I/O port; Thereby draw the crest welding wicking time, and measurement result and measurement order are intuitively shown through display circuit.
Compared with prior art, the crest of the utility model welding wicking time test appearance has following advantage:
Measurement result accurately and reliably, measuring accuracy high (can be accurate to the 0.1S level) is measured intuitively and is shown, only remedies in the market the simple type instrument measured to wicking time length or the shortage of equipment;
2. flexible operation is simple and easy, can test any solder joint on the pcb board of produced on-site, need not extra supports such as frock.
Description of drawings
Fig. 1 is the block scheme of the utility model embodiment 1;
Fig. 2 is the user mode figure of the utility model embodiment 1.
Description of reference numerals: 10-crest welding wicking time test appearance, 101-single-chip microcomputer, 102-the one I/O port, 103-first probe, 104-the 2nd I/O port, 105-second probe, 106-display circuit, 107-LED pilot lamp, 108-memory circuit, 109-dry cell, 110-power switch, 111-key control switch, 20-components and parts pin, 30-PCB plate, 40-tin furnace wall, 50-tin ripple.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing:
As shown in Figure 1; The crest welding wicking time test appearance 10 of the utility model mainly is made up of feed circuit, single-chip microcomputer 101, memory circuit 108, display circuit 106, key control switch 111, first probe 103 and second probe 105; Single-chip microcomputer 101 comprises an I/O port one 02, the 2nd I/O port one 04 and the inner timer (accurately 0.1S) that is used to calculate an I/O port one 02 and the 2nd I/O port one 04 ON time, and the 2nd I/O port one 04 is an interrupting input end.Feed circuit comprise the power switch 110 of dry cell 109 and control on/off.Display circuit 106 comprises digital display tube.Feed circuit, memory circuit 108, display circuit 106 and key control switch 111 are electrically connected with the corresponding port of single-chip microcomputer 101 respectively; One end of first probe 103 is connected with the negative electricity of an I/O port one 02 and dry cell 109, and an end of second probe 105 is electrically connected with the 2nd I/O port one 04.
See Fig. 2, when using crest welding wicking time test appearance 10, the other end of first probe 103 is connected with tin furnace wall 40; The other end of second probe 105 links to each other with components and parts pin 20, and pcb board 30 is in the wave-soldering termination process, and components and parts pin 20 is not before getting into tin ripple 50; First probe 103 and the 105 not conductings of second probe; The 2nd I/O port one 04 level of single-chip microcomputer 101 is high, after components and parts pin 20 is getting into tin ripple 50, because the tin ripple 50 of fusion is a conductor; First probe 103 and 105 conductings of second probe; The 2nd I/O port one 04 of single-chip microcomputer 101 is connected to ground and becomes low level, and this information is input to single-chip microcomputer 101 immediately through the external interrupt of single-chip microcomputer 101, and single-chip microcomputer 101 control LED lights 107 are lighted; And single-chip microcomputer 101 begins to calculate ON time through timer internal, simultaneously the duration that calculates is shown at digital display tube in real time.After components and parts pin 20 leaves tin ripple 50; First probe 103 and the 105 not conductings of second probe, the 2nd I/O port of single-chip microcomputer 101 is become high level again, and this information is input to single-chip microcomputer 101 immediately through the external interrupt of single-chip microcomputer 101; Single-chip microcomputer 101 control LED lights 107 are extinguished; And single-chip microcomputer 101 stops to calculate ON time, and this process is promptly accomplished one-shot measurement, and while single-chip microcomputer 101 will be measured data such as order and measurement result and be sent in the memory circuit 108.Memory circuit 108 can be stored 10 groups of measurement data.After measuring end, through measurement result before key control switch 111 inquiries.
More than be merely the specific embodiment of the utility model, do not limit the protection domain of the utility model with this; Do not violate any replacement and the improvement of being done on the basis of the utility model design, all belonging to the protection domain of the utility model.
Claims (7)
1. a crest welds wicking time test appearance; It is characterized in that: comprise feed circuit, single-chip microcomputer, memory circuit, display circuit, first probe and second probe; This single-chip microcomputer comprises an I/O port, the 2nd I/O port and is used to calculate the timer of a said I/O port and said the 2nd I/O port ON time; Said feed circuit, said memory circuit and said display circuit are electrically connected with the corresponding port of said single-chip microcomputer respectively; Said first probe is connected with the negative electricity of a said I/O port and said feed circuit, and said second probe is electrically connected with said the 2nd I/O port.
2. crest welding wicking time test appearance according to claim 1, it is characterized in that: said display circuit comprises digital display tube.
3. crest welding wicking time test appearance according to claim 1, it is characterized in that: also comprise LED light, this LED light is electrically connected with the corresponding port of said single-chip microcomputer.
4. crest welding wicking time test appearance according to claim 1, it is characterized in that: also comprise key control switch, this key control switch is electrically connected with the corresponding port of said single-chip microcomputer.
5. crest welding wicking time test appearance according to claim 1, it is characterized in that: said feed circuit comprise power supply, this power supply is a dry cell.
6. crest welding wicking time test appearance according to claim 5, it is characterized in that: said feed circuit comprise power switch, this power switch is arranged between said power supply and the said single-chip microcomputer.
7. according to each described crest welding wicking time test appearance of claim 1 to 6, it is characterized in that: also comprise housing, said supply module, said single chip control module, said memory module and said display module are loaded in this housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203807156U CN202331071U (en) | 2011-09-30 | 2011-09-30 | Wave soldering wicking time tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203807156U CN202331071U (en) | 2011-09-30 | 2011-09-30 | Wave soldering wicking time tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202331071U true CN202331071U (en) | 2012-07-11 |
Family
ID=46443046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203807156U Expired - Lifetime CN202331071U (en) | 2011-09-30 | 2011-09-30 | Wave soldering wicking time tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202331071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302372A (en) * | 2013-05-24 | 2013-09-18 | 江苏澳光电子有限公司 | Automatic dip soldering tester |
-
2011
- 2011-09-30 CN CN2011203807156U patent/CN202331071U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302372A (en) * | 2013-05-24 | 2013-09-18 | 江苏澳光电子有限公司 | Automatic dip soldering tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |