CN202240050U - Wave soldering positioning jig for LEDs - Google Patents

Wave soldering positioning jig for LEDs Download PDF

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Publication number
CN202240050U
CN202240050U CN2011203939456U CN201120393945U CN202240050U CN 202240050 U CN202240050 U CN 202240050U CN 2011203939456 U CN2011203939456 U CN 2011203939456U CN 201120393945 U CN201120393945 U CN 201120393945U CN 202240050 U CN202240050 U CN 202240050U
Authority
CN
China
Prior art keywords
printed board
cover plate
soldering
lamp
hole
Prior art date
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
Application number
CN2011203939456U
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Chinese (zh)
Inventor
蒋文
刘宏林
巩刘平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN CHANGHONG ELECTRONICS SYSTEM CO Ltd
Original Assignee
SICHUAN CHANGHONG ELECTRONICS SYSTEM CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SICHUAN CHANGHONG ELECTRONICS SYSTEM CO Ltd filed Critical SICHUAN CHANGHONG ELECTRONICS SYSTEM CO Ltd
Priority to CN2011203939456U priority Critical patent/CN202240050U/en
Application granted granted Critical
Publication of CN202240050U publication Critical patent/CN202240050U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a wave soldering positioning jig for LEDs. In the wave soldering positioning jig for LEDs, a printed board is only positioned with a cover board, so that errors caused by secondary positioning are avoided, the positions of lamp holes on the cover board are in accurate correspondence with those of lamp bodies on the printed board, and the lamp bodies are always perpendicular to the printed board during soldering; such defects of traditional soldering tools as inaccurate positioning, expansion and deformation after heating, complicated assembly and the like are overcome; elastic structures are arranged on ribs at the bottom of a support board, so as to remarkably absorb the deformation of the support board caused by heating; improvements such as the position design of the lamp holes on the cover board and limit devices can further ensure that the lamp bodies are perpendicular to the printed board during and after soldering; and the wave soldering positioning jig for LEDs remarkably eliminates the phenomena of color lumps, floatation of some lamp bodies, bright-spot defects, modular images and the like on large LED displays.

Description

LED wave-soldering localization tool
Technical field
The utility model relates to a kind of LED wave-soldering localization tool.
Background technology
At present; At the LED display production industry; When module is crossed wave-soldering, generally adopt positioning tool to guarantee the plumbness of LED lamp body and printed board plate face, frock is generally formed by covering the spacing cover plate of supporting plate and lamp body; Cover pallet when avoiding accomplishing the device contacts crest tin face of Reflow Soldering, a plurality of reference columns on the pallet also play positioning action to printed board and cover plate respectively; The position of corresponding every LED lamp body all has hole on the cover plate, and the LED lamp body is played position-limiting action, keeps vertical with lamp body after guaranteeing wave-soldering with printed board face, and so-called LED wave-soldering localization tool promptly is meant this cover frock.But, in actual use, locate through pin and locating hole between cover plate and the supporting plate; Also through pin and locating hole location, this just forms second positioning between printed board and the supporting plate, twice locating accuracy and the very difficult assurance of uniformity; Cause on the cover plate LED lamp hole position with print onboard led lamp body installation site can not be accurately corresponding; Cause LED lamp body integral inclination, and the incline direction that a plurality of frock causes is all different with inclined degree, finally causes to occur the color lump phenomenon on the LED large-size screen monitors.In addition, supporting plate expands under the high temperature of wave-soldering, the frame structure downwarping distortion in the middle of occurring; Printed board too because of thermal expansion to lower recess; Cause that lamp body can't be normally spacing in vertical direction, lean on the printed board geometric center more, the gap of the spacing point of lamp body top and cover plate is big more; Cause the indivedual lamp bodies in welding back floating high, finally causing has fleck defect when watching the LED screen-picture at a certain angle.Because of thermal expansion causes LED pin place spacing greater than the lamp body top spacing, the LED lamp body generally tilted to the printed board geometric center behind the wave-soldering when wave-soldering was crossed in printed board, and the lamp body of the edge that keeps to the side more tilts serious more, finally causes the LED large-size screen monitors that obvious modularization phenomenon is arranged.
The utility model content
The utility model technical problem to be solved provides a kind of LED wave-soldering localization tool, and the sum of errors dislocation that this LED wave-soldering localization tool has avoided second positioning to bring makes lamp body in welding process, farthest keep vertical with printed board.
The technical scheme that the utility model technical solution problem is adopted is: this LED wave-soldering localization tool comprises cover plate and supporting plate; Said cover plate is provided with lamp hole; Said supporting plate is provided with some muscle; Lamp hole on the said cover plate and the lamp body in the printed board are corresponding one by one, and said cover plate is provided with reference column, and the reference column on the said cover plate is corresponding one by one with locating hole in the said printed board.There is not keeper between printed board and the supporting plate; Only and between the cover plate there is positioning relation in printed board; The sum of errors dislocation of having avoided second positioning to bring has guaranteed that lamp hole is accurately corresponding with the lamp body position on the cover plate, makes lamp body in welding process, keep vertical with printed board.
The plurality of elastic structure is set on the muscle of said supporting plate, and the retractility that elastic construction is good can absorb the swell increment of supporting plate, keeps supporting plate smooth.
For further preventing the supporting plate downwarping of being heated, between said cover plate and said supporting plate, be provided with the rigidity stopping means.
A kind of mode of said rigidity stopping means is to comprise through hole, lock shaft, locking plate and the position-limitting pin that is arranged on opposite position in cover plate, supporting plate and the printed board; Said locking plate is fixed in the cover plate upper surface through lock shaft; Said position-limitting pin one end is provided with the head of a nail; The other end is provided with annular groove, and said position-limitting pin passes said through hole; Said locking plate be provided with said position-limitting pin on the bayonet socket that is complementary of annular groove.
Said through hole is arranged at the center of cover plate, supporting plate and printed board.
Spacing on the cover plate between the lamp hole is greater than the spacing between the lamp body in the printed board.
The beneficial effect of the utility model is: it is inaccurate that this LED wave-soldering localization tool is changed in the past the welding tooling location, expanded by heating distortion, defectives such as assembling complicacy.Only and between the cover plate there is positioning relation in printed board, and the error of having avoided second positioning to bring has avoided cover plate and supporting plate because of the LED lamp body that the dislocation extruding causes tilts simultaneously, makes lamp body in welding process, farthest keep vertical with printed board.Be provided with elastic construction on the muscle of supporting plate dexterously, absorbed supporting plate well and received thermogenetic deflection, this kind elastic construction simple structure need not increase additional devices, can with the moulding of supporting plate time processing.Vertical with welding back lamp body and printed board further guaranteed in the welding process in improvement such as the design of lamp hole position and stopping means especially on the cover plate.The LED screen that adopts this LED wave-soldering localization tool to weld has out all obtained significant improvement on lamp body perpendicularity and flatness, eliminated phenomenons such as occurring color lump phenomenon, the floating height of indivedual lamp body, fleck defect, image moduleization on the LED large-size screen monitors well.And this LED wave-soldering localization tool cooperates with printed board and produces and use, prevented a plurality of tools to product bring inconsistent.
Description of drawings
Fig. 1 is the three-dimensional assembling of a utility model LED wave-soldering localization tool sketch map.
Fig. 2 is the utility model LED wave-soldering localization tool cover plate and printed board assembling sketch map.
Fig. 3 is the utility model LED wave-soldering localization tool support board structure sketch map.
Fig. 4 is the partial enlarged drawing at A place among Fig. 3.
Fig. 5 is the utility model LED wave-soldering localization tool stopping means assembling sketch map.
Fig. 6 is the utility model LED wave-soldering localization tool position-limitting pin sketch map.
Fig. 7 is the utility model LED wave-soldering localization tool locking plate sketch map.
Fig. 8 is the utility model LED wave-soldering localization tool lamp hole and lamp body spacing sketch map.
The specific embodiment
As depicted in figs. 1 and 2, this LED wave-soldering localization tool is provided with reference column 7 on cover plate 1, and reference column 7 can be an one with cover plate 1, but in order to save material, also can make the form of post and hole interference fit, and is as shown in Figure 2.4 numerical control machine-shapings of lamp hole on the riveting hole of reference column 7 and the cover plate 1, the lamp hole 4 on the cover plate 1 is corresponding one by one with lamp body 5 in the said printed board 3, and the reference column 7 on the cover plate 1 is corresponding one by one with locating hole 8 in the printed board 3 simultaneously.No longer be provided with keeper between printed board 3 and the supporting plate 2, do not have second positioning, the lamp hole 4 on the cover plate 1 can be accurately corresponding with the installation site of lamp body 5, guaranteed lamp body 5 in welding process with the perpendicularity of printed board 3.
Traditional supporting plate 2 expanded by heating in welding process can the downwarping distortion.On the muscle 6 of said supporting plate 2, plurality of elastic structure 9 is set, as shown in Figure 3, the thickness of elastic construction 9 is identical with other parts of muscle 6; Width is little more a lot of than muscle 6 other parts; And take warp architecture, like serpentine, " M " shape or " W " shape etc., as shown in Figure 4.After adopting this kind structure; The part of elastic construction 9 not only in the vertical rigidity can not reduce, holding capacity is still arranged, and in the horizontal certain dilatation can be arranged; When supporting plate 2 expanded by heating; Elastic construction 9 receives the crimp of two ends muscle 6, has absorbed the swell increment of muscle 6, and it is smooth that whole supporting plate 2 still can keep.Printed board 3 downwarping of in welding process, also can being heated, supporting plate 2 keeps smooth when welding, can support printed board 3 well, makes printed board 3 also keep smooth, prevents that lamp body 5 from tilting and floating high.
For preventing supporting plate 2 and printed board 3 expanded by heating better, downwarping also is provided with the rigidity stopping means between cover plate 1 and supporting plate 2.Stopping means can adopt the modes that are rigidly connected such as screw.Cover plate 1 does not contact with scolding tin in welding process, is heated seldom, and cover plate 1 adopts the bigger rigid material of thickness usually in addition, so almost not distortion.Cover plate 1 and supporting plate 2 are fixed together through stopping means, because cover plate 1 is indeformable in welding process, thus can further prevent supporting plate 2 downwarpings distortion, thus printed board 3 flexural deformations prevented, keep smooth.
Like Fig. 5, Fig. 6 and shown in Figure 7, a kind of embodiment preferably of stopping means is, in said cover plate 1, supporting plate 2 and printed board 3, through hole is set, and three through holes are coaxial, and lock shaft 11 is set on cover plate 1, and lock shaft 11 is fixed on cover plate 1 upper surface with locking plate 12.During welding, printed board 3 is positioned in the supporting plate 2, cover plate 1 is accurately located through reference column 7 and locating hole 8 with printed board 3.Position-limitting pin 10 is passed the through hole on supporting plate 2, printed board 3 and the cover plate 1 successively from the below, and the diameter of position-limitting pin 10 is smaller than the diameter of through hole, can not interfere with supporting plate 2, printed board 3 and cover plate 1, but the head of a nail 13 can be held supporting plate 2.Locking plate 12 is that rotate in the center of circle with lock shaft 11, bayonet socket 15 on the locking plate 12 and the annular groove 14 interlocks chucking on the position-limitting pin 10.Stopping means adopts this mode, and is simple in structure, easy to operate, and required precision is low, can not influence the positioning accuracy between cover plate 1 and the printed board 3.
In the welding process, the reclinate degree in the centre of supporting plate 2 is the most serious, so it is best that through hole is arranged at the center effect of cover plate 1, supporting plate 2 and printed board 3.
Printed board 3 is heated in welding process, and inevitable have trace to expand in the horizontal direction, and the pin of lamp body 5 is along with having slight displacement to peripheral direction, and lamp body 5 tops are enclosed within the lamp hole 4 on the cover plate 1, thereby cause lamp body 5 to tilt to center position.So; For preventing that further lamp body 5 from tilting, space D 1 ' between the lamp hole 4 on the cover plate 1 on X, Y both direction and D2 ' are slightly larger than the space D 1 and the D2 of the lamp body 5 in the printed board 3, and be as shown in Figure 8; Such as D1 '=D1*100.1%, D2 '=D2*100.1%.After cover plate 1 was located with printed board 3, lamp hole 4 extruding lamp bodies 5 were that the center forms pre-tilt to the periphery with the geometric center of printed board 3, and printed board 3 is expanded during welding, and the displacement of the pin of lamp body 5 is just proofreaied and correct lamp body 5, makes lamp body 5 vertical with printed board 3.

Claims (6)

1.LED wave-soldering localization tool; Comprise cover plate (1) and supporting plate (2); Said cover plate (1) is provided with lamp hole (4), and said supporting plate (2) is provided with some muscle (6), and lamp hole (4) on the said cover plate (1) and the lamp body (5) in the printed board (3) are corresponding one by one; It is characterized in that: said cover plate (1) is provided with reference column (7), and the reference column (7) on the said cover plate (1) is corresponding one by one with locating hole (8) in the said printed board (3).
2. according to the said LED wave-soldering of claim 1 localization tool, it is characterized in that: said some muscle (6) are provided with plurality of elastic structure (9).
3. according to the said LED wave-soldering of claim 1 localization tool, it is characterized in that: on said cover plate (1) and supporting plate (2), also be provided with the rigidity stopping means.
4. according to the said LED wave-soldering of claim 3 localization tool; It is characterized in that: said rigidity stopping means comprises through hole, lock shaft (11), locking plate (12) and the position-limitting pin (10) that is arranged on the last opposite position of cover plate (1), supporting plate (2) and printed board (3); Said locking plate (12) is fixed in cover plate (1) upper surface through lock shaft (11); Said position-limitting pin (10) one ends are provided with the head of a nail (13); The other end is provided with annular groove (14), and said position-limitting pin (10) passes said through hole, said locking plate (12) be provided with said position-limitting pin (10) on the bayonet socket (15) that is complementary of annular groove (14).
5. according to the said LED wave-soldering of claim 4 localization tool, it is characterized in that: said through hole is arranged at the center of cover plate (1), supporting plate (2) and printed board (3).
6. according to the said LED wave-soldering of claim 1 localization tool, it is characterized in that: the spacing between the lamp hole (4) on the said cover plate (1) is greater than the spacing between the lamp body (5) in the printed board (3).
CN2011203939456U 2011-10-17 2011-10-17 Wave soldering positioning jig for LEDs Expired - Lifetime CN202240050U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203939456U CN202240050U (en) 2011-10-17 2011-10-17 Wave soldering positioning jig for LEDs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203939456U CN202240050U (en) 2011-10-17 2011-10-17 Wave soldering positioning jig for LEDs

Publications (1)

Publication Number Publication Date
CN202240050U true CN202240050U (en) 2012-05-30

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Application Number Title Priority Date Filing Date
CN2011203939456U Expired - Lifetime CN202240050U (en) 2011-10-17 2011-10-17 Wave soldering positioning jig for LEDs

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102764944A (en) * 2012-07-25 2012-11-07 台龙电子(昆山)有限公司 Welding jig for welding LEDs on lamp strips
CN102794532A (en) * 2012-07-26 2012-11-28 南京洛普股份有限公司 Ultra-thin LED (light emitting diode) lamp strip welding fixture
CN103464860A (en) * 2013-09-16 2013-12-25 无锡通明科技有限公司 LED plug lamp positioning device
CN106513915A (en) * 2017-01-11 2017-03-22 成都梓鑫机电科技有限公司 Selective wave soldering clamp with fast pressing function
WO2020062711A1 (en) * 2018-09-28 2020-04-02 深圳市洲明科技股份有限公司 Display device and bottom shell thereof
CN111375859A (en) * 2018-12-29 2020-07-07 北京铁路信号有限公司 LED module welding tool and selective wave soldering method
CN113305385A (en) * 2021-05-25 2021-08-27 中国电子科技集团公司第二十九研究所 Welding device and welding method based on inter-board vertical interconnection printed board assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102764944A (en) * 2012-07-25 2012-11-07 台龙电子(昆山)有限公司 Welding jig for welding LEDs on lamp strips
CN102794532A (en) * 2012-07-26 2012-11-28 南京洛普股份有限公司 Ultra-thin LED (light emitting diode) lamp strip welding fixture
CN102794532B (en) * 2012-07-26 2014-12-17 南京洛普股份有限公司 Ultra-thin LED (light emitting diode) lamp strip welding fixture
CN103464860A (en) * 2013-09-16 2013-12-25 无锡通明科技有限公司 LED plug lamp positioning device
CN106513915A (en) * 2017-01-11 2017-03-22 成都梓鑫机电科技有限公司 Selective wave soldering clamp with fast pressing function
WO2020062711A1 (en) * 2018-09-28 2020-04-02 深圳市洲明科技股份有限公司 Display device and bottom shell thereof
CN111375859A (en) * 2018-12-29 2020-07-07 北京铁路信号有限公司 LED module welding tool and selective wave soldering method
CN113305385A (en) * 2021-05-25 2021-08-27 中国电子科技集团公司第二十九研究所 Welding device and welding method based on inter-board vertical interconnection printed board assembly
CN113305385B (en) * 2021-05-25 2022-11-15 中国电子科技集团公司第二十九研究所 Welding device and welding method based on inter-board vertical interconnection printed board assembly

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20120530

CX01 Expiry of patent term