CN106270864B - Non-contact heating tin brazing method for metal structural part and hardware part - Google Patents
Non-contact heating tin brazing method for metal structural part and hardware part Download PDFInfo
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- CN106270864B CN106270864B CN201610703512.3A CN201610703512A CN106270864B CN 106270864 B CN106270864 B CN 106270864B CN 201610703512 A CN201610703512 A CN 201610703512A CN 106270864 B CN106270864 B CN 106270864B
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- welding
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Classifications
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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
-
- 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
Abstract
The invention provides a non-contact heating tin brazing method for a metal structural part and a hardware part, which comprises the following steps: presetting a workpiece on a transmission system and transmitting the workpiece to a heating system, wherein the workpiece comprises a pre-assembly structure of a metal structural member and a hardware member, a welding flux preset at a welding point between the metal structural member and the hardware member and a turnover clamp used for positioning the pre-assembly structure; carrying out non-contact thermal radiation heating on the workpiece to fully melt the solder at the welding point; and cooling the workpiece subjected to the heat welding so that the welding point is rapidly solidified. By disassembling the assembly of the welding device, the addition of the welding flux and the heating welding, different procedures can be managed finely, which is beneficial to improving the welding efficiency; through non-contact integral heating welding, the welding spot is fully heated and melted, and the welding spot between the metal structural member and the hardware is wetted, flowed and diffused, so that the welding quality is improved.
Description
Technical Field
The invention relates to the technical field of processing, in particular to a welding related process of key parts in the field of communication, and particularly relates to a non-contact heating tin brazing method for a metal structural part and hardware.
Background
The base station antenna is a key component for covering a mobile communication network, and a large class of main components are formed by lap welding metal structural parts and hardware. The welding quality of the mainstream device determines the product index of the base station antenna, and has harsh requirements on the consistency of tin amount of a welding spot, the permeability of the welding spot and the mechanical strength in order to ensure good electrical connection conduction performance and structural connection stability, so that the quantitative control of welding process parameters is an important premise for realizing the consistency of products.
As is known, the conventional soldering process of tin is a local heating soldering method, and uses a soldering iron to generate heat, so as to conduct heat to the soldered point while assisting the solder wire to fill the solder. The welding mode of the metal structural part in the communication industry is basically the welding mode by adopting the electric soldering iron. Because the endothermic effect of metallic structure spare, can satisfy the welding demand in order to make its heating, need higher temperature transmission or long-time contact welding, just must choose powerful welding stage for use, because long-time high temperature, the soldering bit oxidation accelerates, life reduces by a wide margin, the solder joint has aggravated simultaneously and has been heated inhomogeneous unable assurance welding temperature's uniformity and cause welding quality reliability to descend, on the other hand, adopt the manual welding mode, can't guarantee the welding time and send the uniformity of tin volume, the quality uniformity is poor, welding efficiency is low.
In addition, the parts formed by metal structural parts and hardware in the base station antenna have irregularities, so that welding spots are diversified, namely, a large number of multi-dimensional welding spots exist simultaneously, and the full-automatic welding is basically impossible to realize by adopting manual soldering iron for welding and needing to be repeatedly placed and positioned.
The industry also has some innovations, just adopt three-dimensional manipulator to drive the flatiron and carry out the fixed-position welding, can solve the solder joint of coplanar to a certain extent, solved simultaneously and sent the quantification management and control of tin and welding time, nevertheless still can't solve the endothermic influence that brings of metal structure spare from the principle, the solder joint reliability problem of production.
Disclosure of Invention
The invention aims to provide a non-contact heating tin brazing method for a metal structural part and hardware, which improves the welding efficiency and ensures the welding quality.
In order to achieve the purpose, the invention provides the following technical scheme:
a non-contact heating tin brazing method for metal structural parts and hardware comprises an integral heating welding device with a transmission system, a heating system and a cooling system, wherein the heating system and the cooling system are arranged along the transmission direction of a workpiece, and the method comprises the following steps: presetting a workpiece on a transmission system and transmitting the workpiece to a heating system, wherein the workpiece comprises a pre-assembly structure of a metal structural member and a hardware member, a welding flux preset at a welding point between the metal structural member and the hardware member and a turnover clamp used for positioning the pre-assembly structure; carrying out non-contact thermal radiation heating on the workpiece to fully melt the solder at the welding point; and cooling the workpiece subjected to the heat welding so that the welding point is rapidly solidified.
Further, the method also comprises a pre-assembly process of the workpiece, and specifically comprises the following steps: preparing a metal structural part and pre-positioning the metal structural part on a turnover fixture; assembling hardware on the metal structural part, and pre-tightening the hardware and the metal structural part; and solder is preset at the welding point between the metal structural member and the hardware.
Preferably, the welding flux is added to the welding spot between the metal structural part and the hardware through a three-dimensional welding flux automatic adding device.
Preferably, in the step of heating the workpiece by non-contact thermal radiation, the heating temperature and the heating time of the heating system are set, so that the heating system heats the workpiece according to preset heating parameters.
Further, temperature partition and layered control is carried out on the heating area, so that the temperature difference between the metal structural member body and the welding spot is within 5-10 ℃.
The method also comprises the following steps of: and taking down the welded finished product from the turnover fixture, and returning the welded finished product to the turnover fixture through the transmission system.
Compared with the prior art, the scheme of the invention has the following advantages:
1. in the tin soldering method, as the soldering device is fixed, the solder is added, and the heating soldering is carried out for splitting, different procedures are set up and fine management is carried out, the soldering process is conveniently and automatically developed, the modularized management is realized, the soldering efficiency is improved, and the soldering quality is ensured.
2. The tin soldering method adopts a non-contact integral heating welding scheme, so that the welding temperature uniformity and the constant temperature of the metal structural part are ensured; the temperature is controlled by a program, so that the requirements of the characteristics of the tin solder are met, and the fluidity of the solder and the forming strength of a welding spot are ensured.
3. The tin soldering method adopts a non-contact integral heating welding scheme and adopts a parameter control function, so that the welding time is controlled very accurately, and the welding quality is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of the integral heating of a work piece in an integral heat welding apparatus of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The invention relates to a non-contact heating tin brazing method (hereinafter referred to as a tin brazing method) for metal structural parts and hardware, which mainly comprises four steps of presetting a workpiece (containing solder adding), heating the workpiece in a non-contact manner, cooling the workpiece and disassembling the workpiece.
The solder is added in the three-dimensional automatic solder adding equipment, so that the synchronous multi-point addition of the solder at the welding points needing to be welded can be realized, the solder has accurate quantification and the shape of the solder is changed to ensure the consistency of the flowing distance of the solder in the welding process.
As shown in fig. 1, the non-contact heating is performed in the integral heating welding device 1, the integral heating welding device 1 has a transmission system for transmitting the workpiece and a heating system and a cooling system sequentially arranged along the transmission direction of the workpiece, and the heating system is used for carrying out 360-degree all-dimensional heat radiation on the workpiece, so that each position and part of the product can be uniformly heated, the solder on the welding spot is fully melted by heat absorption, and then the solder is wetted and flowed between the welding spots 3 and 4 of the metal structural member 2 and the hardware, and then the liquid solder at the welding spot is rapidly solidified by cooling to form the required welding spot.
The tin brazing method specifically comprises the following steps:
presetting a workpiece on the transmission system and transmitting the workpiece to the heating system;
the workpiece comprises a pre-assembly structure of the metal structural part 2 and the hardware, solder preset at a welding point between the metal structural part and the hardware and a turnover clamp used for positioning the pre-assembly structure. The turnover fixture has the functions of limiting and positioning, is high-temperature resistant, and can be used for limiting and positioning a plurality of semi-products simultaneously.
And carrying out non-contact thermal radiation heating on the workpiece so that the solder at the welding point is fully melted. In the invention, the workpiece is subjected to omnibearing thermal radiation heating by the integral heating welding equipment, so that welding spots are fully melted by heat absorption, and wetting, flowing and element diffusion are carried out between the welding spots of the metal structural part and the hardware.
And cooling the workpiece after the heating welding is finished, so that the welding spot is rapidly solidified, and the whole non-contact tin soldering joint is finished.
Further, the method also comprises a pre-assembly process of the workpiece, and specifically comprises the following steps:
preparing a metal structural part and pre-positioning the metal structural part on a turnover fixture;
assembling hardware on the metal structural part, and pre-tightening the hardware and the metal structural part; the metal structural part is provided with an inwards concave structure, the hardware is embedded into the inwards concave structure of the metal structural part, the metal structural part and the hardware are pre-tightened by means of a high-temperature-resistant pre-tightening tool, and the gap between the metal structural part and a welding spot of the hardware is smaller than 0.1 mm. In addition, the pretensioning tool has high temperature resistance, so that the object can be prevented from losing efficacy due to the expansion and contraction effect.
And solder is preset at the welding point between the metal structural member and the hardware. Preferably, in the invention, the solder is added to the welding spot between the metal structural part and the hardware by a three-dimensional automatic solder adding device.
Preferably, in the step of heating the workpiece by non-contact thermal radiation, the heating temperature and the heating time of the heating system are set, so that the heating system heats the workpiece according to preset heating parameters.
Preferably, temperature partition and layered control is carried out on the heating area, so that the temperature difference between the metal structural member body and the welding point is within 5-10 ℃, and the requirements of the electroplated layer and the welding temperature of the hardware are met.
Further, the method also comprises the following steps after welding is completed, and the method specifically comprises the following steps: and taking down the welded finished product from the turnover fixture, and returning the welded finished product to the turnover fixture through the transmission system to complete a complete single-cycle flow.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A non-contact heating tin brazing method for a metal structural part and hardware of a base station antenna is characterized by comprising an integral heating welding device with a transmission system, a heating system and a cooling system, wherein the heating system and the cooling system are arranged along the transmission direction of a workpiece, and the method comprises the following steps:
presetting a workpiece on a transmission system and transmitting the workpiece to a heating system, wherein the workpiece comprises a pre-assembly structure of a metal structural member and a hardware member, a welding flux preset at a welding point between the metal structural member and the hardware member and a turnover clamp used for positioning the pre-assembly structure;
solder is preset at a welding point between a metal structural part and a hardware part, and then the workpiece is subjected to non-contact 360-degree omnibearing thermal radiation integral heating, so that the solder at the welding point is fully melted;
cooling the workpiece after heating welding to quickly solidify the welding spot;
in the step of carrying out non-contact thermal radiation heating on the workpiece, setting the heating temperature and the heating time of a heating system, so that the heating system heats the workpiece according to preset heating parameters; and carrying out temperature partition and layered control on the heating area, so that the temperature difference between the metal structural member body and the welding spot is within 5-10 ℃.
2. The non-contact heating tin brazing method for the metal structural part and the hardware part as claimed in claim 1, further comprising a pre-assembly process of the workpiece, and specifically comprising the following steps:
preparing a metal structural part and pre-positioning the metal structural part on a turnover fixture;
and assembling hardware on the metal structural part, and pre-tightening the hardware and the metal structural part.
3. The method for non-contact heated tin brazing of a metal structural member to hardware as claimed in claim 2, wherein the solder is added to the spot of the weld between the metal structural member and the hardware by a three-dimensional solder automatic adding device.
4. The non-contact heating tin brazing method for the metal structural part and the hardware part as claimed in claim 1, further comprising the following steps of: and taking down the welded finished product from the turnover fixture, and returning the welded finished product to the turnover fixture through the transmission system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703512.3A CN106270864B (en) | 2016-08-22 | 2016-08-22 | Non-contact heating tin brazing method for metal structural part and hardware part |
| PCT/CN2017/082151 WO2018036187A1 (en) | 2016-08-22 | 2017-04-27 | Non-contact heating tin brazing method for welding metal structure and hardware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610703512.3A CN106270864B (en) | 2016-08-22 | 2016-08-22 | Non-contact heating tin brazing method for metal structural part and hardware part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106270864A CN106270864A (en) | 2017-01-04 |
| CN106270864B true CN106270864B (en) | 2019-12-27 |
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| CN201610703512.3A Active CN106270864B (en) | 2016-08-22 | 2016-08-22 | Non-contact heating tin brazing method for metal structural part and hardware part |
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| Country | Link |
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| CN (1) | CN106270864B (en) |
| WO (1) | WO2018036187A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270864B (en) * | 2016-08-22 | 2019-12-27 | 京信通信技术(广州)有限公司 | Non-contact heating tin brazing method for metal structural part and hardware part |
| CN106238846B (en) * | 2016-08-22 | 2019-12-27 | 京信通信技术(广州)有限公司 | Non-contact heating tin brazing method for metal structural part and coaxial cable |
| CN106238848B (en) * | 2016-08-22 | 2019-12-27 | 京信通信技术(广州)有限公司 | Non-contact type heating tin brazing method for metal structural part and PCB |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201230910A (en) * | 2011-01-11 | 2012-07-16 | Hon Hai Prec Ind Co Ltd | The method of manufacturing the LED lightbar and the equipment thereof |
| CN103286408A (en) * | 2012-02-24 | 2013-09-11 | 国际商业机器公司 | Heat source system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001007507A (en) * | 1999-06-25 | 2001-01-12 | Fujitsu Ltd | Reflow equipment |
| JP2009160652A (en) * | 2008-01-08 | 2009-07-23 | Fec:Kk | High-frequency induction heating apparatus, and heating method using high-frequency induction coil and magnetic material |
| CN103357981A (en) * | 2012-03-26 | 2013-10-23 | 武汉飞恩微电子有限公司 | Rotation type reflow soldering furnace and soldering method thereof |
| CN103008817B (en) * | 2012-12-03 | 2015-06-10 | 深圳深蓝精机有限公司 | Automatic soldering machine |
| CN103317203A (en) * | 2013-06-20 | 2013-09-25 | 成都九洲迪飞科技有限责任公司 | Welding technology for microwave substrate |
| CN203448816U (en) * | 2013-08-31 | 2014-02-26 | 东莞市科隆威自动化设备有限公司 | Structurally-improved reflow soldering machine |
| EP3009220B1 (en) * | 2014-10-17 | 2018-12-19 | Rehm Thermal Systems GmbH | Roller to roller production assembly for and method of concatenated continuous and discontinuous processing processes |
| CN106270864B (en) * | 2016-08-22 | 2019-12-27 | 京信通信技术(广州)有限公司 | Non-contact heating tin brazing method for metal structural part and hardware part |
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- 2016-08-22 CN CN201610703512.3A patent/CN106270864B/en active Active
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- 2017-04-27 WO PCT/CN2017/082151 patent/WO2018036187A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201230910A (en) * | 2011-01-11 | 2012-07-16 | Hon Hai Prec Ind Co Ltd | The method of manufacturing the LED lightbar and the equipment thereof |
| CN103286408A (en) * | 2012-02-24 | 2013-09-11 | 国际商业机器公司 | Heat source system |
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| Publication number | Publication date |
|---|---|
| CN106270864A (en) | 2017-01-04 |
| WO2018036187A1 (en) | 2018-03-01 |
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Effective date of registration: 20200121 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Co-patentee before: Jingxin Communication System (China) Co., Ltd. Patentee before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |