CN102711391B - High-efficiency soldering process of circuit board connector - Google Patents

High-efficiency soldering process of circuit board connector Download PDF

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Publication number
CN102711391B
CN102711391B CN201210190948.9A CN201210190948A CN102711391B CN 102711391 B CN102711391 B CN 102711391B CN 201210190948 A CN201210190948 A CN 201210190948A CN 102711391 B CN102711391 B CN 102711391B
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soldering
connector
pcb
scraper
tin cream
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CN201210190948.9A
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CN102711391A (en
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奉平
李元
李建林
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Hunan Max new energy Co., Ltd
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DONGGUAN HAITAWEI ELECTRONIC TECHNOLOGY Co Ltd
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Abstract

The invention discloses a high-efficiency soldering process of a circuit board connector in the field of soldering processes of electronic components on a circuit board. The high-efficiency soldering process comprises the following steps of: providing a PCB (Printed Circuit Board) jointed board; scraping soldering paste; mounting; mechanically installing a connector; carrying out reflow soldering; and carrying out QC (Quality Control) inspection testing and soldering an electronic wire. According to the high-efficiency soldering process, the step of manually soldering the connector is removed in the prior art, the PCB jointed board and the installed connector are placed in a soldering furnace of a reflux soldering machine for soldering, the original manual soldering is changed into the automatic soldering, thus the soldering quality of a soldering apparatus is improved, a series of procedures can be completed on the PCB jointed board, the production efficiency is increased, and the workers and the production cost which are required during production can be reduced.

Description

A kind of welding procedure of efficient circuit board connector
Technical field
The present invention relates to a kind of welding procedure of electronic element on circuit board, be specifically related to a kind of welding procedure of efficient circuit board connector.
Background technology
In pasted on surface of circuit board technique, PVC circuit board needs mount various different components and parts, for the components and parts of not pin, can directly by Placement on circuit boards, convenient and swift, and pass rate is high; But for there being the particular components of pin, draw as electric connector, manually compress again after needing first electric connector to be inserted circuit board, pin is injected in circuit board completely, then carries out human weld, and inefficiency during human weld, rework rate is high, soldering tin bar amount is simultaneously many, wastes more production and processing costs, to do over again welding as also manually carried out secondary when needs are done over again.
Summary of the invention
The object of the invention is to solve above defect, provide one to increase work efficiency, reduce the welding procedure of the more efficient circuit board connector of product rejection rate.
The object of the invention is to realize in the following manner:
A welding procedure for efficient circuit board connector, is characterized in that described welding procedure comprises the following steps;
(a), PCB jigsaw is provided; described PCB jigsaw refers to that the splicing of polylith small-sized pcb board of the same race is on a larger plate face; and there is multiple line layer; and this PCB jigsaw offers at least one welding hole; comprise horizontally-arranged connector welding hole, this welding hole and described line layer form and electrically conduct;
(b), scrape tin cream; by solder paste coating on PCB jigsaw; the Main Function of tin cream is the pad locations of bonding SMD components at PCB jigsaw; during to ensure chip mounter paster, SMD components can not be scattered; solder paste stirrer is utilized fully tin cream to be stirred; use full-automatic, semi-automatic or manual screen process press that tin cream is printed on the pad of PCB jigsaw by processing quality requirement; then be placed on steel net template; scraper plate compresses template downwards; use scraper to carry out scraping tin cream, after scraping steel mesh with scraper, not residual tin cream was as the criterion;
C (), paster, adopt chip mounter to be attached to by SMD components and to be coated with on the PCB jigsaw of tin cream, after each element sticks, with tweezers flicking once, ensure that the tin cream in the termination of element or pin and board pads fits tightly, to prevent rosin joint;
D (), machine add-in connectors, by connector stitch and the horizontally-arranged corresponding connection of connector welding hole, and compress with hand hydraulic cutting presser, the stitch of connector disposablely all can be pierced in PCB splice joint hole, play location fixation;
(e), Reflow Soldering excessively, fixture front is adopted to pick up monoblock PCB jigsaw, the plate face being inserted with connector stitch is had in the Reflow Soldering of tin in fusing and carries out wicking, Reflow Soldering is heated by component palette, makes solder paste melts and reach between device and PCB jigsaw and be electrically connected;
F (), QC checkout also weld electric wire, check whether weld occurs rosin joint and soldering incomplete phenomena, need to reprocess as found that there is quality problems when checking, defective in quality SMD components and connector are pulled down and adopts repair machine again to weld, finally at Wiring port welding electrical connections.
Further, described hand hydraulic cutting presser stamper component is divided into hand hydraulic cutting presser patrix and hand hydraulic cutting presser counterdie, and described PCB jigsaw is placed between hand hydraulic cutting presser patrix and hand hydraulic cutting presser counterdie.
Further, also reference column is provided with between described connector and pcb board.
Further, described use scraper carries out scraping in tin cream operation, scraper angle control be 45 ~ 60 degree, use the Stress control of scraper to be about 5kg, described scraper is rubber scraper.
the beneficial effect that the present invention produces is: this technique eliminates in prior art the step needed by human weld's connector, the brazier putting PCB jigsaw into reflow machine together with mounted connector welds, automatic welding is changed into by original human weld, improve the welding quality of soldering apparatus, spliced the PCB jigsaw be combined to form on a larger plate face by polylith small-sized pcb board of the same race simultaneously, hand hydraulic cutting presser is coordinated to carry out installation and pressed connector again, a series of operation can be completed on PCB jigsaw, improve production efficiency, reduce rework rate, its production efficiency is more than five times of prior art, and required staff and production cost when producing can be reduced.
Accompanying drawing explanation
Fig. 1 is the process chart of the welding procedure of a kind of efficient circuit board connector of the present invention;
Fig. 2 be in the welding procedure of a kind of efficient circuit board connector of the present invention PCB and connector install after structural representation;
Fig. 3 is the structural representation in the welding procedure of a kind of efficient circuit board connector of the present invention in hand hydraulic cutting presser operation;
In figure, 1PCB circuit jointed board, 2 connectors, 3 connector stitch, 4 hand hydraulic cutting presser patrixes, 5 hand hydraulic cutting presser counterdies.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
The present embodiment, sees figures.1.and.2, a kind of welding procedure of efficient circuit board connector, it is characterized in that described welding procedure comprises the following steps;
(a), PCB jigsaw 1 is provided; described PCB jigsaw 1 refers to that the splicing of polylith small-sized pcb board of the same race is on a larger plate face; small-sized pcb board of the same race is square plate, and equal and opposite in direction, is combined and splicedly integrated; and there is multiple line layer; and this PCB jigsaw 1 offers at least one welding hole, this welding hole is used for mounting components and parts, comprises horizontally-arranged connector welding hole; this connector welding hole is used for connectors stitch 3, and this welding hole and described line layer form and electrically conduct;
(b), scrape tin cream, the effect of tin cream is exactly make its change form of being heated, and is the medium of welding with pcb board without device, and the eutectic point of tin cream is 183 DEG C, at this moment, tin cream just melting by paste, meet cold after become solid fraction body, first by solder paste coating on PCB jigsaw 1, the Main Function of tin cream is the pad locations of bonding SMD components at PCB jigsaw 1, during to ensure chip mounter paster, SMD components can not be scattered, tin cream before use, rise again at least half an hour, and stir, in order to avoid each composition mixes uneven and causes harmful effect in tin cream, solder paste stirrer is utilized fully tin cream to be stirred, use full-automatic, semi-automatic or manual screen process press is printed on tin cream on the pad of PCB jigsaw 1 by processing quality requirement, then be placed on steel net template, scraper plate compresses template downwards, scraper is used to carry out scraping tin cream, after scraping steel mesh with scraper, not residual tin cream was as the criterion, it is 45 degree that scraper angle controls, use the Stress control of scraper to be about 5kg, the scraper used is rubber scraper,
(c), paster, adopting chip mounter to be attached to by SMD components is coated with on the PCB jigsaw 1 of tin cream, be placed on screen printing table by needing the circuit board carrying out paster, the steel net template that taking out needs is installed on screen printing table, with tweezers, SMD components is attached on PCB jigsaw 1 one by one, surface mount elements is by ascending, order from low to high, as much as possible once align and post, when being attached to multiple same element, first should complete the paster of this element, change another kind of element again and carry out paster, after each element sticks, with tweezers flicking once, ensure that the tin cream in the termination of element or pin and board pads fits tightly, to prevent rosin joint, after circuit board paster completes, need again to check that element has error-free subsides, leak and paste, many subsides or the phenomenon such as crooked,
(d), machine add-in connectors, connector is band pin components and parts, hand hydraulic cutting presser can be adopted once to compress installation, save and manually carry out single installation procedure, also be provided with reference column between connector 2 and pcb board; By connector stitch 3 and the horizontally-arranged corresponding connection of connector welding hole; and compress with hand hydraulic cutting presser; hand hydraulic cutting presser stamper component is divided into hand hydraulic cutting presser patrix 4 and hand hydraulic cutting presser counterdie 5; described PCB jigsaw 1 is placed between hand hydraulic cutting presser patrix 4 and hand hydraulic cutting presser counterdie 5; connector stitch 3 disposablely all can be pierced in PCB jigsaw 1 welding hole, play location fixation;
(e), cross Reflow Soldering, open Reflow Soldering in advance and carry out preheating, after Reflow Soldering sends prompt tone, represent that preheating completes, can circuit board be placed in Reflow Soldering, fixture front is adopted to pick up monoblock PCB jigsaw 1, the plate face being inserted with connector stitch 3 is had in the Reflow Soldering of tin in fusing and carries out wicking, select the temperature curve that Reflow Soldering has set, then Reflow Soldering is started, when again sending prompt tone Deng Reflow Soldering, represent that welding completes, need to take out PCB jigsaw 1, Reflow Soldering is heated by component palette, make solder paste melts and reach between device and PCB jigsaw 1 to be electrically connected,
(f), QC checkout also welds electric wire, check whether weld occurs rosin joint and soldering incomplete phenomena, after having welded, need the outward appearance carrying out checking product, whether solder joint is full, light, there is intact tin, the phenomenons such as rosin joint, particularly the pin of chip class components and parts is with or without bridge welding, rosin joint, the phenomenon such as crooked, with or without tin sweat(ing) etc. on check circuit plate, need to reprocess as found that there is quality problems when checking, defective in quality SMD components and connector are pulled down and adopts repair machine again to weld, finally at Wiring port welding electrical connections, be used for being electrically connected other components and parts.
this technique eliminates in prior art the step needed by human weld's connector, the brazier putting PCB jigsaw into reflow machine together with mounted connector welds, automatic welding is changed into by original human weld, improve the welding quality of soldering apparatus, spliced the PCB jigsaw be combined to form on a larger plate face by polylith small-sized pcb board of the same race simultaneously, hand hydraulic cutting presser is coordinated to carry out installation and pressed connector again, a series of operation can be completed on PCB jigsaw, improve production efficiency, reduce rework rate, its production efficiency is more than five times of prior art, and required staff and production cost when producing can be reduced.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as protection scope of the present invention.

Claims (2)

1. a welding procedure for efficient circuit board connector, is characterized in that described welding procedure comprises the following steps;
(a), PCB jigsaw is provided; described PCB jigsaw refers to that the splicing of polylith small-sized pcb board of the same race is on a larger plate face; and there is multiple line layer; and this PCB jigsaw offers at least one welding hole; comprise horizontally-arranged connector welding hole, this welding hole and described line layer form and electrically conduct;
(b), scrape tin cream; by solder paste coating on PCB jigsaw; solder paste stirrer is utilized fully tin cream to be stirred; use full-automatic, semi-automatic or manual screen process press that tin cream is printed on the pad of PCB jigsaw by processing quality requirement; then be placed on steel net template; scraper plate compresses template downwards; scraper is used to carry out scraping tin cream; after scraping steel mesh with scraper, not residual tin cream was as the criterion; it is 45 ~ 60 degree that scraper angle controls; use the Stress control of scraper to be about 5kg, described scraper is rubber scraper;
C (), paster, adopt chip mounter to be attached to by SMD components and to be coated with on the PCB jigsaw of tin cream, after each element sticks, with tweezers flicking once, ensure that the tin cream in the termination of element or pin and board pads fits tightly, to prevent rosin joint;
D (), machine add-in connectors, by connector stitch and the horizontally-arranged corresponding connection of connector welding hole, and compress with hand hydraulic cutting presser, the stitch of connector disposablely all can be pierced in PCB splice joint hole, be also provided with reference column between described connector and pcb board;
(e), Reflow Soldering excessively; fixture front is adopted to pick up monoblock PCB jigsaw; the plate face being inserted with connector stitch is had in the Reflow Soldering of tin in fusing and carries out wicking, Reflow Soldering is heated by component palette, makes solder paste melts and reach between device and PCB jigsaw and be electrically connected;
F (), QC checkout also weld electric wire, check whether weld occurs rosin joint and soldering incomplete phenomena, need to reprocess as found that there is quality problems when checking, defective in quality SMD components and connector are pulled down and adopts repair machine again to weld, finally at Wiring port welding electrical connections.
2. the welding procedure of a kind of efficient circuit board connector according to claim 1, is characterized in that: described hand hydraulic cutting presser stamper component is divided into hand hydraulic cutting presser patrix and hand hydraulic cutting presser counterdie, and described PCB jigsaw is placed between hand hydraulic cutting presser patrix and hand hydraulic cutting presser counterdie.
CN201210190948.9A 2012-06-12 2012-06-12 High-efficiency soldering process of circuit board connector Active CN102711391B (en)

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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
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Effective date of registration: 20191211

Address after: Building 2, building 8 and 9, innovation and entrepreneurship Park, Shuangpai industrial concentration zone, Shuangpai County, Yongzhou City, Hunan Province

Patentee after: Hunan Max new energy Co., Ltd

Address before: 523000 Guangdong city of Dongguan province Dalang Zhen Gao Ying Cun Yinying Road No. 88 building A, building C, building D

Patentee before: Dongguan Haitawei Electronic Technology Co., Ltd.