CN112388082B - Welding method and welding tool for micro printed board contact - Google Patents
Welding method and welding tool for micro printed board contact Download PDFInfo
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- CN112388082B CN112388082B CN202011255241.2A CN202011255241A CN112388082B CN 112388082 B CN112388082 B CN 112388082B CN 202011255241 A CN202011255241 A CN 202011255241A CN 112388082 B CN112388082 B CN 112388082B
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- welding
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- printed board
- protective sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention provides a welding method of a miniature printed board contact, which comprises the following steps: sequentially installing the welding ends of all the joints into welding holes of a printed board; sleeving a protective sleeve of each support leg of the welding tool on the contact end of the contact point, and enabling the welding tool to abut against the limiting step to tightly press the contact point on the printed board; the welding ends of the connection points are enameled one by using a soldering iron; and cleaning the surface of the welding spot, and then taking down the welding tool to finish welding. The invention also provides a welding tool, which comprises a body, wherein the body is provided with a plurality of support legs, the end parts of the support legs are provided with protective sleeves, and the positions of the protective sleeves correspond to the positions of the welding holes on the printed board. Through the contact jaw of protective case parcel contact, the material processing that does not eat tin is adopted to the frock simultaneously, can not be infected with by soldering tin on guaranteeing the contact of contact, has improved work efficiency, has guaranteed the welding quality of contact on the printing board.
Description
Technical Field
The invention belongs to the technical field of printed board welding, and particularly relates to a welding method and a welding tool for a miniature printed board contact.
Background
In the design of the product of electromechanical combination, a design method of welding joints on a printed board is often used, which is convenient for connecting a circuit, so as to transmit signals of mechanical combination of the product to a circuit part and finally realize the functional characteristics of the product, along with the development requirement of miniaturization of the product, the sizes of the joints are smaller and smaller, for example, a Chinese patent with the publication number of CN109618489A provides a printed circuit board, a pin array is arranged and distributed in a staggered way at the vertical height to improve the pin density and the outgoing line density of signal lines, for the civil products produced in large scale, automatic equipment is often adopted for production, but for some customized printed boards in military products, only the production requirement of a plurality of pieces is still adopted for processing in a manual welding mode, when the diameter of the joints is less than 1mm, soldering tin is extremely easy to touch the contact surfaces of the joints in the manual operation process, the contact resistance is influenced, and even electrochemical corrosion is caused to cause serious accidents, meanwhile, the size of the joint is small, the consistency of the welding height of the joint is difficult to ensure, and the welding quality cannot be effectively ensured.
Disclosure of Invention
In order to solve the technical problems, the invention provides a welding method and a welding tool for a miniature printed board contact, wherein the contact end of the contact is wrapped by a protective sleeve, and meanwhile, the tool is processed by adopting a material which does not absorb tin, so that the contact end of the contact is not polluted by soldering tin, the working efficiency is improved, and the welding quality of the contact on the printed board is ensured.
The invention is realized by the following technical scheme:
a welding method of a miniature printed board contact comprises the following steps:
the method comprises the following steps: arranging a limiting step in the middle of the contact to divide the contact into a contact end and a welding end, and sequentially installing the welding end of each contact into a welding hole of the printed board;
step two: sleeving a protective sleeve of each support leg of the welding tool on the contact end of the contact point, and enabling the welding tool to abut against the limiting step to tightly press the contact point on the printed board;
step three: the welding ends of the connection points are enameled one by using a soldering iron;
step four: and cleaning the surface of the welding spot, and then taking down the welding tool to finish welding.
The contact end of the contact is wrapped by the protective sleeve, so that the contact end of the contact is prevented from being contaminated by soldering tin, the working efficiency is improved, and the welding quality of the contact on the printed board is guaranteed. The welding tool abuts against the contact, so that the welding position of the contact is ensured to be fully contacted with a welding pad of the printed board, the center of the contact is perpendicular to the surface of the printed board after welding is finished, the position degree of the contact is ensured, and the contact reliability is improved; the top ends of the contact ends of all the welded contacts can be kept on the same plane under the guarantee of the tool, the contact ends are reliably attached to a mechanical structure, and the reliable transmission of signals is guaranteed.
And in the third step, the soldering iron is a temperature control soldering iron, so that the soldering quality is ensured.
Before the third step of tin coating, rotating the cover plate to observe whether the contact points in the welding holes of the printed board are assembled in place or not, and otherwise, returning to the first step; after all the contacts are assembled in place, the cover plate is rotated to shield the protective sleeve, and then tin coating operation is performed, so that guarantee is provided for control over the welding process, soldering tin is prevented from splashing and falling into the protective sleeve to contaminate the contacts, and welding quality is further guaranteed.
The application also provides a welding tool for the welding method of the miniature printed board contact, which comprises a body, wherein the body is provided with a plurality of support legs, the end parts of the support legs are provided with protective sleeves, the positions of the protective sleeves correspond to the positions of the welding holes in the printed board, the protective sleeves are sleeved outside the contact ends of the contact during welding, the contact is prevented from being contaminated by soldering tin, and meanwhile, the contact is compressed on the printed board, so that the consistency of the welding height of the contact is ensured.
The height of the protective sleeve is larger than that of the contact end of the contact, so that the contact end of the contact is prevented from being contaminated by soldering tin in the welding process.
The protective sleeve is in clearance fit with the contact end of the contact, so that the operation is convenient.
The joint of the protective sleeve and the support leg is smaller than one fourth of the periphery of the protective sleeve, so that soldering iron welding operation is facilitated.
The welding tool is made of aluminum, stainless steel, zinc alloy or magnesium alloy, and the welding tool is processed by adopting a material which does not absorb tin, so that the cleanliness of the welding tool in the welding process is ensured, the welding tool can be used repeatedly, and the spherical surfaces of the contact points are prevented from being stained by soldering tin.
The body upper end is provided with overhanging connecting rod, and the protective case hole is not sheltered from to the connecting rod, the connecting device of being convenient for.
Still including the apron, the apron rotates the suit on the connecting rod to can shelter from or expose protective case hole through rotating, can rotate the assembly condition of apron observation contact, also can prevent that soldering tin from splashing and falling into protective case, be infected with the contact, further ensure welding quality.
The invention has the beneficial effects that:
compared with the prior art, through the contact jaw of protective case parcel contact, the material processing that does not eat the tin is adopted to the frock simultaneously, guarantees not infected by soldering tin on the contact of contact, has improved work efficiency, has guaranteed the welding quality of contact on the printing board. The welding tool abuts against the contact, so that the welding position of the contact is ensured to be fully contacted with a welding pad of the printed board, the center of the contact is perpendicular to the surface of the printed board after welding is finished, the position degree of the contact is ensured, and the contact reliability is improved; the top ends of the contact ends of all the welded contacts can be kept on the same plane under the guarantee of the tool, the contact ends are reliably attached to a mechanical structure, and the reliable transmission of signals is guaranteed. Through rotating the apron, can observe the assembly condition of contact, also can prevent that soldering tin from splashing and falling into protective sleeve, be infected with the contact, further ensure welding quality.
Drawings
FIG. 1 is a schematic diagram of a printed board contact welding structure;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a welding tool for welding a contact according to the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic structural view of the welding tool of the present invention;
FIG. 6 is a schematic structural view of an additional cover plate of the welding tool of the present invention;
fig. 7 is a top view of fig. 6.
In the figure: the welding method comprises the following steps of 1-body, 2-contact, 3-cover plate, 4-printed board, 11-support leg, 12-protective sleeve, 13-connecting rod, 21-limiting step, 22-contact end, 23-welding end and 41-welding hole.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A welding method of a miniature printed board contact comprises the following steps:
the method comprises the following steps: a limiting step 21 is arranged in the middle of the contact 2 to divide the contact 2 into a contact end 22 and a welding end 23, and the welding end 23 of each contact 2 is sequentially installed in a welding hole 41 of the printed board 4;
step two: sleeving the protective sleeves 12 of the support legs 11 of the welding tool on the contact ends 22 of the contacts 2, and enabling the welding tool to abut against the limiting steps 21 to press the contacts 2 on the printed board 4;
step three: the welding ends 23 of the contacts 2 are enameled one by using a soldering iron;
step four: and cleaning the surface of the welding spot, and then taking down the welding tool to finish welding.
The contact end 22 of the contact 2 is wrapped by the protective sleeve 12, so that the contact end 22 of the contact 2 is prevented from being contaminated by soldering tin, the working efficiency is improved, and the welding quality of the contact 2 on the printed board is ensured. The welding tool abuts against the contact 2, so that the welding position of the contact 2 is fully contacted with a welding pad of the printed board 4, the center of the contact 2 is perpendicular to the surface of the printed board 4 after welding, the position degree of the contact 2 is ensured, and the contact reliability is improved; after welding, the top ends of the contact ends 22 of the contacts 2 can be kept on the same plane under the guarantee of the tool, and the tool can be reliably attached to a mechanical structure, so that the reliable transmission of signals is guaranteed.
And in the third step, the soldering iron is a temperature control soldering iron, so that the soldering quality is ensured.
Before the third step of tin coating, the cover plate 3 is rotated to observe whether the contact 2 in each welding hole 41 of the printed board 4 is assembled in place or not, and if not, the first step is returned; after all the contacts 2 are assembled in place, the cover plate 3 is rotated to shield the protective sleeve 12, and then tin coating operation is performed, so that guarantee is provided for control of the welding process, soldering tin is prevented from splashing and falling into the protective sleeve 12 to contaminate the contacts 2, and welding quality is further guaranteed.
The application also provides a welding tool for the welding method of the miniature printed board contact, which has the following structure:
example one
As shown in fig. 1 to 5, including body 1, body 1 is provided with a plurality of stabilizer blades 11, and 11 tip of stabilizer blade are provided with protective sleeve 12, and each welding hole position on the corresponding printing board in each protective sleeve 12 position, during the welding with protective sleeve 12 suit in the contact jaw outside of contact 2, avoid being infected with soldering tin, compress tightly contact 2 on printing board 4 simultaneously, guarantee the uniformity of the welding height of contact 2.
The height of the protective sleeve 12 is greater than the height of the contact end 22 of the contact 2, so that the contact end 22 of the contact 2 is prevented from being contaminated by soldering tin during the welding process.
The protective sleeve 12 is in clearance fit with the contact end 22 of the contact 2 for convenient operation.
The joint of the protective sleeve 12 and the support leg 11 is smaller than one fourth of the periphery of the protective sleeve 12, so that the soldering operation is facilitated.
The welding tool is made of aluminum, stainless steel, zinc alloy or magnesium alloy, and the welding tool is processed by adopting a material which does not absorb tin, so that the cleanliness of the welding tool in the welding process is ensured, the welding tool can be used repeatedly, and the spherical surface of the contact 2 is prevented from being stained by soldering tin.
The upper end of the body 1 is provided with an outward extending connecting rod 13, and the connecting rod 13 does not shield the inner hole of the protective sleeve 12, so that equipment can be conveniently connected.
Example two
As shown in fig. 6 and 7, the configuration of the first embodiment is modified as follows:
still including apron 3, apron 3 rotates the suit on connecting rod 13 to can shelter from or expose protective case 12 holes through rotating, can rotate 3 assembly conditions of observing contact 2 of apron, also can prevent that soldering tin from splashing and falling into protective case 12, be infected with contact 2, further ensure welding quality.
According to the welding method and the welding tool for the contacts of the miniature printed board, provided by the invention, the contact ends of the contacts are wrapped by the protective sleeve, and meanwhile, the tool is processed by adopting a non-tin-eating material, so that the contact ends of the contacts are not contaminated by soldering tin, the working efficiency is improved, and the welding quality of the contacts on the printed board is ensured. The welding tool abuts against the contact, so that the welding position of the contact is ensured to be fully contacted with a welding pad of the printed board, the center of the contact is perpendicular to the surface of the printed board after welding is finished, the position degree of the contact is ensured, and the contact reliability is improved; the top ends of the contact ends of all the welded contacts can be kept on the same plane under the guarantee of the tool, the contact ends are reliably attached to a mechanical structure, and the reliable transmission of signals is guaranteed. Through rotating the apron, can observe the assembly condition of contact, also can prevent that soldering tin from splashing and falling into protective sleeve, be infected with the contact, further ensure welding quality.
Claims (7)
1. A welding method of a miniature printed board contact is characterized by comprising the following steps:
the method comprises the following steps: the middle of each contact (2) is provided with a limiting step (21) to divide the contact (2) into a contact end (22) and a welding end (23), and the welding ends (23) of the contacts (2) are sequentially arranged in welding holes (41) of a printed board (4);
step two: sleeving a protective sleeve (12) of each support leg (11) of the welding tool on a contact end (22) of the contact (2), and enabling the welding tool to abut against a limiting step (21) to press the contact (2) on the printed board (4);
step three: the welding ends (23) of the contacts (2) are enameled and fixed one by using a soldering iron;
step four: cleaning the surface of the welding spot, then taking down the welding tool to finish welding,
a cover plate (3) for shielding an inner hole of the protective sleeve (12) is arranged on the welding tool, the cover plate (3) is rotatably connected with the welding tool body (1), before tin coating in the third step, the cover plate (3) is rotated to observe whether the contact (2) in each welding hole (41) of the printed board (4) is assembled in place, and if not, the first step is returned; after all the contacts (2) are assembled in place, the cover plate (3) is rotated to shield the protective sleeve (12), and then tin coating operation is carried out.
2. The method for soldering a contact of a micro printed board according to claim 1, wherein: and in the third step, the soldering iron is a temperature control soldering iron.
3. A welding tool used for the welding method of the micro printed board contact of any one of claims 1 to 2, characterized in that: including body (1), body (1) is provided with a plurality of stabilizer blades (11), and stabilizer blade (11) tip is provided with protective sleeve (12), and each welding hole position on the corresponding printing board in each protective sleeve (12) position, body (1) upper end is provided with overhanging connecting rod (13), and protective sleeve (12) hole is not sheltered from in connecting rod (13), still includes apron (3), and apron (3) rotate the suit on connecting rod (13) to can shelter from or expose protective sleeve (12) hole through rotating.
4. The welding tool of claim 3, wherein: the height of the protective sleeve (12) is greater than the height of the contact end (22) of the contact (2).
5. The welding tool of claim 3, wherein: the protective sleeve (12) is in clearance fit with the contact end (22) of the contact (2).
6. The welding tool of claim 3, wherein: the joint of the protective sleeve (12) and the support leg (11) is smaller than one fourth of the periphery of the protective sleeve (12).
7. The welding tool of claim 3, wherein: the welding tool is made of aluminum, stainless steel, zinc alloy or magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255241.2A CN112388082B (en) | 2020-11-11 | 2020-11-11 | Welding method and welding tool for micro printed board contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255241.2A CN112388082B (en) | 2020-11-11 | 2020-11-11 | Welding method and welding tool for micro printed board contact |
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| Publication Number | Publication Date |
|---|---|
| CN112388082A CN112388082A (en) | 2021-02-23 |
| CN112388082B true CN112388082B (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011255241.2A Active CN112388082B (en) | 2020-11-11 | 2020-11-11 | Welding method and welding tool for micro printed board contact |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57126194A (en) * | 1981-01-30 | 1982-08-05 | Nippon Electric Co | Method of forming soldered hole of printed board |
| CN202701673U (en) * | 2012-07-04 | 2013-01-30 | 贵州航天电子科技有限公司 | Printed board welding location tool |
| CN203566038U (en) * | 2013-10-31 | 2014-04-30 | 安徽理士电池技术有限公司 | Weld-aid tool for storage battery terminal |
| CN107717269A (en) * | 2017-10-24 | 2018-02-23 | 蒙城佳仕龙机械制造有限公司 | One kind is used for small weldment pressure and touches switch safety design device and its application method |
| CN207372552U (en) * | 2017-10-13 | 2018-05-18 | 扬州海科电子科技有限公司 | A kind of simple frock for RF isolation welding |
| CN108655643A (en) * | 2018-05-23 | 2018-10-16 | 中国电子科技集团公司第四十研究所 | A kind of coaxial capacitance filter precision positioning welding fixture and its application method |
| CN108907564A (en) * | 2018-08-03 | 2018-11-30 | 中国航空工业集团公司雷华电子技术研究所 | A kind of welding tooling compensating microwave printed board Warping Effect |
-
2020
- 2020-11-11 CN CN202011255241.2A patent/CN112388082B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57126194A (en) * | 1981-01-30 | 1982-08-05 | Nippon Electric Co | Method of forming soldered hole of printed board |
| CN202701673U (en) * | 2012-07-04 | 2013-01-30 | 贵州航天电子科技有限公司 | Printed board welding location tool |
| CN203566038U (en) * | 2013-10-31 | 2014-04-30 | 安徽理士电池技术有限公司 | Weld-aid tool for storage battery terminal |
| CN207372552U (en) * | 2017-10-13 | 2018-05-18 | 扬州海科电子科技有限公司 | A kind of simple frock for RF isolation welding |
| CN107717269A (en) * | 2017-10-24 | 2018-02-23 | 蒙城佳仕龙机械制造有限公司 | One kind is used for small weldment pressure and touches switch safety design device and its application method |
| CN108655643A (en) * | 2018-05-23 | 2018-10-16 | 中国电子科技集团公司第四十研究所 | A kind of coaxial capacitance filter precision positioning welding fixture and its application method |
| CN108907564A (en) * | 2018-08-03 | 2018-11-30 | 中国航空工业集团公司雷华电子技术研究所 | A kind of welding tooling compensating microwave printed board Warping Effect |
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| CN112388082A (en) | 2021-02-23 |
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