CN110248499B - Auxiliary tool for PCB welding jig and using method thereof - Google Patents
Auxiliary tool for PCB welding jig and using method thereof Download PDFInfo
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- CN110248499B CN110248499B CN201910607028.4A CN201910607028A CN110248499B CN 110248499 B CN110248499 B CN 110248499B CN 201910607028 A CN201910607028 A CN 201910607028A CN 110248499 B CN110248499 B CN 110248499B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003466 welding Methods 0.000 title claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 238000005476 soldering Methods 0.000 claims abstract description 30
- 230000017525 heat dissipation Effects 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 238000003860 storage Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 5
- 229920001875 Ebonite Polymers 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims 2
- 230000000630 rising effect Effects 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 17
- 230000001174 ascending effect Effects 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000036541 health Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006386 memory function Effects 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
本发明公开了一种PCB板焊接治具辅助工具及其使用方法，属于PCB锡焊治具领域，一种PCB板焊接治具辅助工具及其使用方法，利用散热风扇对PCB板进行散热，之后在利用雪块对散热生成的高温气体进行降温，同时在雪块降温的过程中会融化成水，液态水在在对高温气体进行洗涤，使高温气体降温成低温干净的气体，重新回到防尘罩内，它可以实现在PCB板锡焊的过程中，辅助PCB板进行散热，使PCB板不易因长时间处于高温环境而烧毁，同时在对PCB板进行散热的过程中，不易在生产车间内形成扬尘，同时随着散热装置的正常工作，散热装置内部污染物会有效减少，不需要工作人员手工进行清理，减小工作人员的工作强度。
The invention discloses an auxiliary tool for a PCB board welding jig and a method of using the same, belonging to the field of PCB soldering jigs, an auxiliary tool for a PCB board welding jig and a method of using the same. The high-temperature gas generated by heat dissipation is cooled by the snow blocks, and at the same time, it will melt into water during the cooling process of the snow blocks. In the dust cover, it can assist the PCB board to dissipate heat during the soldering process of the PCB board, so that the PCB board is not easy to be burned due to long-term high temperature environment. At the same time, with the normal operation of the heat dissipation device, the pollutants inside the heat dissipation device will be effectively reduced, and the staff does not need to be cleaned manually, reducing the work intensity of the staff.
Description
Technical Field
The invention relates to the field of PCB auxiliary fixtures, in particular to a PCB welding fixture auxiliary tool and a using method thereof.
Background
Printed circuit boards (PCB boards), also known as printed circuit boards, are providers of electrical connections for electronic components. The PCB has the main advantages of greatly reducing errors of wiring and assembly and improving the automation level and the production labor rate.
With the development of industrialization, automation of large-scale production of PCBs has been achieved, in large-scale factories, a transport system and a soldering robot arm controlled by automation technology can automatically complete the soldering work of PCBs, and in the soldering process, the production efficiency is high, the error rate is low, and the method is widely applied to many large-scale factories.
For ordinary small-sized factories and individual manufacturers, they cannot bear the cost of the conveying system and the soldering robot controlled by automation technology, so the traditional soldering jig still has the use value, the PCB is easy to burn out due to the high temperature of soldering in the soldering process, although the traditional air cooling device can solve the heat dissipation problem in the PCB soldering process to a certain extent, but the unsolidified tin soldering points are easy to blow by the over-strong heat dissipation wind, so the unsolidified tin soldering points are deformed, the solder paste is fused with nearby tin soldering points to cause short circuit of PCB circuits, weak heat dissipation wind cannot play a preset cooling role, in the air cooling process, dust is easily generated in a PCB soldering workshop to influence the working environment of the soldered PCB, causing serious risks to the health of the staff in the production plant, especially to the health of the respiratory system.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an auxiliary tool for a PCB welding jig and a use method thereof, which can be used for assisting a PCB in heat dissipation in the PCB soldering process, so that the PCB is not easy to burn due to long-time high-temperature environment, meanwhile, in the heat dissipation process of the PCB, dust is not easy to form in a production workshop, serious harm is not easy to be caused to the health of workers in the production workshop, and meanwhile, with the use of a heat dissipation device, pollutants in the heat dissipation device can be effectively reduced, the workers do not need to manually clean, and the working strength of the workers is reduced.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An auxiliary tool for a PCB welding jig comprises a cooling table base, wherein a support column is fixedly connected to the upper end of the cooling table base, a drying device is placed at the upper end of the cooling table base and is positioned on the outer side of the support column, a radiating fan is connected to the upper end of the support column, a pair of placing tables are arranged on the upper side of the support column, a pair of connecting columns are fixedly connected between the placing tables and the side wall of the radiating fan, a water storage groove is formed in the upper end of the cooling table base and is positioned on the outer side of the radiating fan, a dust cover matched with the water storage groove is placed on the upper side of the cooling table base and comprises an outer dust cover plate and an inner dust cover plate, a plurality of groups of connecting columns are fixedly connected between the outer dust cover plate and the inner dust cover plate, an air guide cavity is formed between the outer dust cover plate and the inner dust cover plate, and an air through hole is formed in the upper end of the inner dust cover plate, the lower extreme fixedly connected with annular air filter of dust cover, be connected with multiunit elastic buckle between dust cover and the annular air filter, and multiunit elastic buckle all with dust cover fixed connection, the annular through-hole has been seted up to annular air filter's upper end, and the annular through-hole is located the air guide intracavity, it has multiunit air filter to cut on annular air filter's the lateral wall, and air filter the one side that the hole is located elastic buckle downside and is close to the dust cover inner panel, the intussuseption of annular air filter is filled with loose snow.
Can realize at the in-process of PCB board soldering, supplementary PCB board dispels the heat, make the PCB board be difficult for burning out because of being in high temperature environment for a long time, simultaneously carrying out radiating in-process to the PCB board, be difficult for forming the raise dust in the workshop, be difficult for causing serious harm to the healthy especially respiratory system health of the staff in the workshop, simultaneously at the in-process that heat abstractor used, the inside difficult pollutant that forms of heat abstractor is accumulated and saved, and along with heat abstractor's use, the inside pollutant of heat abstractor can effectively reduce, do not need the staff to clear up by hand, reduce staff's working strength.
Further, through activity fixture block fixed connection between support column and the radiator fan, and activity fixture block and support column fixed connection make things convenient for staff's dismouting radiator fan, make things convenient for the staff to change the active carbon granule.
Further, drying device includes the drying device shell, the last lower wall of drying device shell has all been dug multiunit scavenge port, multiunit the downthehole equal fixedly connected with filter screen of taking a breath, drying device shell intussuseption is filled with a plurality of active carbon particles, and the active carbon particle of drying device shell intussuseption can effectively absorb the moisture that is mingled with in the gas of annular filter pipe cooling, is difficult for causing the PCB board to wet, is difficult for influencing the normal use of PCB board.
Further, the upper and lower inner wall fixedly connected with of drying device shell leads the aerofoil, and crisscross distribution between a plurality of air deflectors, and the air deflector of crisscross distribution can increase the route of marcing of gas in the drying device shell, increases the drying effect of active carbon granule.
Further, all dig a pair of handle hole that matches each other on dust cover planking and the dust cover inner panel, one fixedly connected with sealing rubber dish on the sealing rubber dish inner wall, and sealing rubber dish and be located dust cover planking fixed connection, sealing rubber dish is made by a plurality of fan-shaped rubber pieces, and fan-shaped rubber piece adopts the hard rubber who has the memorability characteristic to make, and staff's both hands can be operated in inserting the dust cover through two handle holes respectively, and the fan-shaped rubber piece that has the memory function can tightly attach on staff's arm all the time, is difficult for influencing the leakproofness of dust cover.
Further, all dig on the outer wall of dust cover planking and dust cover inner panel and look at the window, look at window inner wall fixedly connected with sealing rubber frame, from the extroversion in proper order fixedly connected with transparent ya keli board between the sealing rubber frame inner wall and mend the glass board, the staff can observe the inside operation of dust cover through looking at window and transparent ya keli board, and mend the glass board and then can revise the produced visual error in transparent ya keli board arc surface, make the staff be difficult for appearing the mistake welding in the working process of soldering.
An auxiliary tool for a PCB welding jig is provided, the using method comprises:
s1, placing the PCB to be soldered on two placing tables;
s2, filling sufficient snow blocks into the annular air filtering pipe, installing the annular air filtering pipe to the lower side of the dust cover by utilizing a plurality of groups of elastic buckles, and then placing the dust cover into the water storage tank together with the annular air filtering pipe;
s3, starting a cooling fan, enabling a worker to respectively pass through an operation hole by hands and extend into a dust cover to perform soldering work, enabling the worker to operate and observe through a viewing window in the soldering work process, enabling air flow in the dust cover to be in an ascending trend under the action of the cooling fan at the moment, enabling the ascending air flow to be generally mixed with a large amount of impurities such as smoke dust and the like after heat exchange with a PCB (printed circuit board) is completed, enabling ascending hot air flow to enter an air guide cavity through an air through hole and then flow downwards to an annular air filter pipe, enabling hot air flow to enter the annular air filter pipe through an annular through hole in the annular air filter pipe, enabling snow blocks in the annular air filter pipe to start to melt when contacting high-temperature gas, absorbing heat mixed with the high-temperature gas, enabling the high-temperature gas to be cooled to be low-temperature gas, and enabling the melted water to absorb waste in the high-temperature gas, then the low-temperature gas flows out of the air filtering holes after passing through the gaps in the snow blocks, enters the shell of the drying device through the ventilating holes, is dried by the active carbon particles and then is discharged to the inner side of the dust cover, so that air circulation is formed, meanwhile, the original high-temperature gas is changed into the low-temperature gas, and the heat dissipation effect of the PCB is improved;
s4, after the PCB is cooled for a period of time, uncovering the dust cover, taking out the cooled PCB, putting the PCB to be processed in, and repeating the steps;
s5, when the liquid level in the water storage tank does not change for a long time, most of the snow blocks filled in the annular air filtering pipe are melted into liquid water, after the dust cover is uncovered by a worker, the water in the water storage tank is discharged, the annular air filtering pipe is replaced, and then the dust cover is placed back into the water storage tank again.
Furthermore, a rubber pad is arranged between the placing table and the PCB and fixedly connected with the placing table, and anti-slip lines are carved at one end, close to the PCB, of the rubber pad, so that the PCB can be firmly placed on the placing table and cannot easily slip off from the placing table.
Furthermore, in the step S2, the filled snow blocks should be kept fluffy, and the snow blocks cannot be compacted, so as to reserve a traveling path for the high-temperature gas in the annular gas filtering pipe, so that the high-temperature gas is not easy to form a blockage at the annular gas filtering pipe, and the normal operation of gas circulation is not easy to be affected.
Furthermore, the annular filter tube filled with the snow blocks in the S5 can be prepared in advance and stored in the heat preservation box, workers do not need to assemble the annular filter tube and the snow blocks temporarily, and the working efficiency of the workers is improved.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
can realize at the in-process of PCB board soldering, supplementary PCB board dispels the heat, make the PCB board be difficult for burning out because of being in high temperature environment for a long time, simultaneously carrying out radiating in-process to the PCB board, be difficult for forming the raise dust in the workshop, be difficult for causing serious harm to the healthy especially respiratory system health of the staff in the workshop, simultaneously at the in-process that heat abstractor used, the inside difficult pollutant that forms of heat abstractor is accumulated and saved, and along with heat abstractor's use, the inside pollutant of heat abstractor can effectively reduce, do not need the staff to clear up by hand, reduce staff's working strength.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of the structure at B in FIG. 1;
FIG. 4 is a schematic view of the structure at C in FIG. 1
FIG. 5 is a top view of the present invention with the dust cap removed;
FIG. 6 is a front view of the dust cap of the present invention;
FIG. 7 is a side cross-sectional view of the dust cap of the present invention;
fig. 8 is a schematic structural view at D in fig. 7 according to the present invention.
The reference numbers in the figures illustrate:
the cooling table comprises a cooling table base 1, a water storage tank 2, a dust cover outer plate 3, a dust cover inner plate 4, a gas guide cavity 5, a connecting column 6, a gas through hole 7, a supporting column 8, a heat radiation fan 9, a placing table 10, a drying device shell 11, a ventilating hole 12, a filter screen 13, a gas guide plate 14, activated carbon particles 15, an annular gas filter pipe 16, a gas filter hole 17, an elastic buckle 18, an operation hole 19, a sealing rubber disc 20, a sealing rubber frame 21, a transparent acrylic plate 22 and a correction glass plate 23.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-3, an auxiliary tool for a PCB board welding jig comprises a cooling table base 1, a support column 8 is fixedly connected to the upper end of the cooling table base 1, a drying device is placed on the upper end of the cooling table base 1 and located outside the support column 8, a soldering pen and a soldering bar are placed on the upper side of the drying device and electrically connected with a mains supply through the soldering pen, a heat dissipation fan 9 is connected to the upper end of the support column 8, a pair of placing tables 10 are arranged on the upper side of the support column 8, a pair of connecting columns are fixedly connected between the placing tables 10 and the side wall of the heat dissipation fan 9, a water storage tank 2 is drilled at the upper end of the cooling table base 1, the water storage tank 2 is located outside the heat dissipation fan 9, a dust cover matched with the water storage tank 2 is placed on the upper side of the cooling table base 1 and comprises an outer plate 3 and an inner plate 4 of the dust cover, the outer dust cover plate 3 is positioned at the outer side of the inner dust cover plate 4, a plurality of groups of connecting columns 6 are fixedly connected between the outer dust cover plate 3 and the inner dust cover plate 4, an air guide cavity 5 is arranged between the outer dust cover plate 3 and the inner dust cover plate 4, an air through hole 7 is drilled at the upper end of the inner dust cover plate 4, the air guide cavity 5 is communicated with the inner part of the dust cover through the air through hole 7, an annular air filtering pipe 16 matched with the air guide cavity 5 is fixedly connected at the lower end of the dust cover, a plurality of groups of elastic buckles 18 are connected between the dust cover and the annular air filtering pipe 16, and a plurality of groups of elastic buckles 18 are all fixedly connected with the dust cover, the upper end of the annular filter tube 16 is provided with an annular through hole, the annular through hole is positioned in the air guide cavity 5, a plurality of groups of air filtering holes 17 are cut on the side wall of the annular air filtering pipe 16, and the air filtering hole 17 is positioned at the lower side of the elastic buckle 18 and close to one side of the inner plate 4 of the dust cover, and the annular air filtering pipe 16 is filled with loose snow blocks.
Wherein the heat dissipating fan 9 is electrically connected with a switch, the switch is electrically connected with the mains supply, a worker can control the opening and closing of the heat dissipating fan 9 through the switch, when the heat dissipating device works normally, the heat dissipating fan 9 is in an open state, because the area of the heat dissipating fan 9 is far larger than that of the PCB, the gas in the dust cover can be mixed with the smoke dust in the dust cover to move upwards, the upward moving gas flow and the PCB form heat exchange to cool the PCB, then the high-temperature gas mixed with the smoke dust and other impurities passes through the gas guide cavity 5 to enter the annular gas filtering pipe 16, the temperature reduction and the gas washing are completed under the action of the snow blocks filled in the annular gas filtering pipe 16, the solid snow blocks are melted into liquid water under the action of the high-temperature gas, the liquid water can form the gas washing to the high-temperature gas to be converted into low-temperature gas with the moisture, then the low-temperature gas with the moisture is dried by the drying device, and changing the gas back into the dry low-temperature gas and returning the gas back into the dust cover to complete the circulation of the gas.
Referring to fig. 1-4, the support post 8 is fixedly connected to the cooling fan 9 via a movable fixture block, and the movable fixture block is fixedly connected to the support post 8, so as to facilitate the worker to disassemble and assemble the cooling fan 9, and facilitate the worker to replace the activated carbon particles 15 in the drying device housing 11, the drying device includes a drying device housing 11, a plurality of sets of ventilation holes 12 are drilled on the upper and lower walls of the drying device housing 11, the ventilation holes 12 on the lower side are close to the dust cover inner plate 4, the ventilation holes 12 on the upper side are close to the support post 8, a filter screen 13 is fixedly connected to the plurality of ventilation holes 12, the drying device housing 11 is filled with a plurality of activated carbon particles 15, the activated carbon particles 15 filled in the drying device housing 11 can effectively absorb moisture mixed in the gas cooled by the annular filter pipe 16, so as to prevent the PCB from being affected by moisture and affecting the normal use of the PCB, the upper inner wall and the lower inner wall of the drying device shell 11 are fixedly connected with a plurality of air guide plates 14, the air guide plates 14 are distributed in a staggered mode, the air guide plates 14 distributed in a staggered mode can increase the advancing path of air in the drying device shell 11, and the drying effect of the activated carbon particles 15 is improved.
Referring to fig. 6-8, a pair of operation holes 19 matching each other are drilled on the outer plate 3 and the inner plate 4 of the dust cover, a sealing rubber disc 20 is fixedly connected to the inner wall of one of the operation holes 19, the sealing rubber disc 20 is fixedly connected to the outer plate 3 of the dust cover, the sealing rubber disc 20 is made of a plurality of fan-shaped rubber sheets, the fan-shaped rubber sheets are made of hard rubber with memorability, both hands of a worker can be inserted into the dust cover through the two operation holes 19 for operation, the fan-shaped rubber sheets with memory function can be always tightly attached to the arm of the worker, the sealing performance of the dust cover is not easily affected, viewing windows are drilled on the outer walls of the outer plate 3 and the inner plate 4 of the dust cover, a sealing rubber frame 21 is fixedly connected to the inner wall of the viewing window, a transparent acrylic plate 22 and a correction glass plate 23 are fixedly connected between the inner walls of the sealing rubber frame 21 in sequence from outside to inside, and the revise glass board 23 is transparent glass, and the staff can observe the operation of dust cover inside through observation window and transparent acrylic plate 22, and revise glass board 23 then can revise the produced visual error of transparent acrylic plate 22 arc surface, makes the staff be difficult for appearing the mistake welding in the working process of soldering.
An auxiliary tool for a PCB welding jig is provided, the using method comprises:
s1, placing the PCB to be soldered on the two placing tables 10;
s2, filling sufficient snow blocks into the annular filter tube 16, installing the annular filter tube 16 to the lower side of the dust cover by utilizing a plurality of groups of elastic buckles 18, and then placing the dust cover into the water storage tank 2 together with the annular filter tube 16;
s3, starting the heat dissipation fan 9, enabling a worker to respectively pass through the operation holes 19 with two hands and extend into the dust cover to perform soldering work, wherein the worker needs to wear a long-sleeved jacket or wear a protective sleeve of the device to prevent the arm of the worker from being cut by hard rubber sheets, during the soldering work, the worker can perform operation observation through a viewing window, during the soldering work, the air flow in the dust cover is in an ascending trend under the action of the heat dissipation fan 9, after the ascending air flow completes heat exchange with the PCB, a large amount of impurities such as smoke and dust are usually mixed, the ascending air flow enters the air guide cavity 5 through the air through hole 7 and then flows downwards to the annular air filter pipe 16, the air flow enters the annular air filter pipe 16 through the annular through hole, snow blocks in the annular air filter pipe 16 begin to melt when contacting high-temperature air, meanwhile, heat mixed with high-temperature gas is absorbed, the high-temperature gas is cooled to low-temperature gas, meanwhile, waste mixed in the high-temperature gas can be adsorbed by molten water, then the low-temperature gas flows out of the air filtering holes 17 after passing through gaps inside the snow blocks, enters the drying device shell 11 through the ventilating holes 12, is dried by the activated carbon particles 15 and then is discharged to the inner side of the dust cover, air circulation is formed, meanwhile, the original high-temperature gas is changed into low-temperature gas, and the heat dissipation effect of the PCB is improved;
s4, after the PCB is cooled for a period of time, uncovering the dust cover, taking out the cooled PCB, putting the PCB to be processed in, and repeating the steps;
s5, when the liquid level in the water storage tank 2 does not change for a long time, most of the snow blocks filled in the annular filter tube 16 are melted into liquid water, after the dust cover is uncovered by a worker, the water in the water storage tank 2 is discharged, the annular filter tube 16 is replaced, and then the dust cover is placed back into the water storage tank 2.
Please refer to fig. 3-4, a rubber pad is disposed between the placing table 10 and the PCB, and the rubber pad is fixedly connected to the placing table 10, and an anti-slip pattern is engraved at an end of the rubber pad close to the PCB, so that the PCB can be more firmly placed on the placing table 10, and is not easy to slip off from the placing table 10, in S2, the filled snow block should be kept in a fluffy state, and the snow block cannot be compacted, a traveling path is reserved for the high-temperature gas in the annular gas filter 16, so that the high-temperature gas is not easy to form a blockage at the annular gas filter 16, and the normal operation of gas circulation is not easy to be affected, the annular gas filter 16 filled with the snow block in S5 can be prepared in advance and stored in the thermal insulation box, and the work efficiency of the worker is increased without temporarily assembling the annular gas filter 16 and the snow block.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
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| CN201910607028.4A CN110248499B (en) | 2019-07-06 | 2019-07-06 | Auxiliary tool for PCB welding jig and using method thereof |
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| CN201910607028.4A CN110248499B (en) | 2019-07-06 | 2019-07-06 | Auxiliary tool for PCB welding jig and using method thereof |
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| CN110248499B true CN110248499B (en) | 2022-03-18 |
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