CN103357982B - A kind of preheating device of printed circuit board and pre-heating mean - Google Patents
A kind of preheating device of printed circuit board and pre-heating mean Download PDFInfo
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- CN103357982B CN103357982B CN201310310456.3A CN201310310456A CN103357982B CN 103357982 B CN103357982 B CN 103357982B CN 201310310456 A CN201310310456 A CN 201310310456A CN 103357982 B CN103357982 B CN 103357982B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 229910052571 earthenware Inorganic materials 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229940074869 marquis Drugs 0.000 description 1
- VBUNOIXRZNJNAD-UHFFFAOYSA-N ponazuril Chemical compound CC1=CC(N2C(N(C)C(=O)NC2=O)=O)=CC=C1OC1=CC=C(S(=O)(=O)C(F)(F)F)C=C1 VBUNOIXRZNJNAD-UHFFFAOYSA-N 0.000 description 1
- 238000012802 pre-warming Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a kind of preheating device and pre-heating mean of printed circuit board, preheating device comprises the shell with inner chamber, be arranged on the heat generating component for air in heating casing in described shell, to be fixed in described shell and there is the volute of air inlet and air outlet, fixing on the housing and there is the motor that output shaft stretches into described volute, to be arranged on described output shaft and hot gas can be made to enter volute and from the wind wheel of air outlet ejection from air inlet with output shaft rotation, be removably disposed in the nozzle plate described shell is sprayed onto for the hot gas sprayed by described air outlet on printed circuit board.Because preheating device is provided with dismountable nozzle plate; the spout size of nozzle plate and shape can be customized according to the situation of printed circuit board; same like this preheating device just can adapt to the pre-heat treatment of various printed circuit board; adaptable; maximum protection can be obtained to the components and parts on printed circuit board, safe and reliable.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of preheating device and pre-heating mean of printed circuit board.
Background technology
Printed circuit board and pcb board, the general technology flow process of printed circuit board wave soldering is for plugging in components and parts part, spraying scaling powder, preheating, welding.The activation temperature (according to different technological requirement generally at 90 DEG C ~ 130 DEG C) of pre-heating technique wherein mainly in order to make scaling powder reach certain, can play the best use of when welding, obtaining outstanding welding quality.The wide variety of current printed circuit board plate, its components and parts to preheat requirements and ability to bear also different, minority components and parts even just may break down when prewarming baking, and the preheating method of therefore traditional whole plate preheating marquis inapplicable sometimes, needs further improvement.
Summary of the invention
The present invention is directed to preheating device and pre-heating mean that prior art Problems existing proposes a kind of printed circuit board, object is to enable preheating device meet the different preheating requirements of different printed circuit boards, make the applicable ability of preheating device stronger, pre-heat endurance is higher, and pre-heat effect is better.
The present invention is achieved in that
A kind of preheating device of printed circuit board, comprise the shell with inner chamber, be arranged on the heat generating component for air in heating casing in described shell, to be fixed in described shell and there is the volute of air inlet and air outlet, fixing on the housing and there is the motor that output shaft stretches into described volute, to be arranged on described output shaft and hot gas can be made to enter volute and from the wind wheel of air outlet ejection from air inlet with output shaft rotation, being removably disposed in the nozzle plate described shell is sprayed onto for the hot gas sprayed by described air outlet on printed circuit board.
The preheating device of above-mentioned a kind of printed circuit board, wherein, the rectifier box be convenient to hot blast and evenly sprayed is provided with between described shell and described nozzle plate, described rectifier box is fixing on the housing, the intracavity inter-connection of described air outlet and described rectifier box, described rectifier box has an opening, and described nozzle plate is removably disposed in the opening part of described rectifier box.
The preheating device of above-mentioned a kind of printed circuit board, wherein, described rectifier box comprises the first side plate, the second side plate, the 3rd side plate and the 4th side plate, the end of described first side plate, the second side plate and the 3rd side plate is bent to form the installation portion carrying described nozzle plate respectively to the inside along portion, have to be convenient to described nozzle plate and to slide into the gap skidded off between the end edge of described 4th side plate and described installation portion place plane.
The preheating device of above-mentioned a kind of printed circuit board, wherein, is also provided with cowling panel in described rectifier box, and described cowling panel and described nozzle plate be arranged in parallel, described cowling panel have the rectification hole being evenly covered with cowling panel.
The preheating device of above-mentioned a kind of printed circuit board, wherein, described nozzle plate has for guiding hot gas to the jet pipe on printed circuit board.
The preheating device of above-mentioned a kind of printed circuit board, wherein, the heating wire that can generate heat after described heat generating component comprises energising, for being wound around the earthenware of heating wire, for the mount pad of fixing described earthenware; Described mount pad is fixed in described shell.
The preheating device of above-mentioned a kind of printed circuit board, wherein, described mount pad is installed with the fixed bar of some even arrangements, the two ends of described fixed bar are provided with the ceramic ring also can locating described earthenware for being wound around heating wire, and described earthenware is located in described ceramic ring.
The preheating device of above-mentioned a kind of printed circuit board, wherein, described motor is positioned at the middle part of described shell, and described volute and described wind wheel all have two and arrange about described housing center axial symmetry, and described heat generating component is even number and is evenly distributed in shell both ends.
Based on a pre-heating mean for described preheating device, it is characterized in that, comprise the following steps:
A, above and below printed circuit board preheating production line, all preheating device is set;
B, printed circuit board shape, performance according to required processing and need the position of preheating to insert or change corresponding nozzle plate;
C, startup heat generating component and motor carry out the pre-heat treatment to printed circuit board.
The pre-heating mean of above-mentioned a kind of printed circuit board, wherein, described steps A specifically comprises: be arranged on by described preheating device directly over printed circuit board preheating production line and just issuing, and preheating device is symmetrical arranged about printed circuit board preheating production line up and down.
The preheating device of a kind of printed circuit board provided by the present invention and pre-heating mean; because preheating device is provided with dismountable nozzle plate; the spout size of nozzle plate and shape can be customized according to the situation of printed circuit board; same like this preheating device just can adapt to the pre-heat treatment of various printed circuit board; adaptable; maximum protection can be obtained to the components and parts on printed circuit board, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of preheating device of the present invention.
Fig. 2 is the explosive view of preheating device of the present invention.
Fig. 3 is the structural representation of cowling panel in preheating device of the present invention.
Fig. 4 be in preheating device of the present invention nozzle plate and rectifier box assembling after partial structurtes schematic diagram.
Fig. 5 is the structural representation of mount pad in preheating device of the present invention.
Fig. 6 is the structural representation of heat generating component in preheating device of the present invention.
Fig. 7 is nozzle plate structure schematic diagram when spray orifice is covered with nozzle plate in preheating device of the present invention.
Fig. 8 is nozzle plate structure schematic diagram when spray orifice is not covered with nozzle plate in preheating device of the present invention.
Fig. 9 is preheat mode schematic diagram when nozzle plate does not establish jet pipe in preheating device of the present invention.
Figure 10 is preheat mode schematic diagram when jet pipe is straight tube in preheating device of the present invention.
Figure 11 is preheat mode schematic diagram when jet pipe is oblique cylinder in preheating device of the present invention.
Figure 12 is the flow chart of pre-heating mean of the present invention.
Detailed description of the invention
Below just accompanying drawing in conjunction with the embodiments, is described in further detail the specific embodiment of the present invention, is easier to understand, grasp to make technical solution of the present invention.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of preheating device of printed circuit board, as shown in Figure 1 and Figure 2, comprise shell 100, heat generating component 200, volute 300, motor 400, wind wheel 500, rectifier box 600 and nozzle plate 700.Described shell 100 has inner chamber, described heat generating component 200 and volute 300 are all arranged in described shell 100, described motor 400 is arranged on the end face outside shell 100, the output shaft of motor 400 inserts shell 100 and stretches into volute 300, described wind wheel 500 be positioned at volute 300 and with described output shaft fixed connection, described rectifier box 600 to be fixed on described shell 100 and to be connected with the air outlet of described volute 300, and described nozzle plate 700 is removably fixed on described rectifier box 600.
Described preheating device preheat function implementation procedure is as follows: the air in heat generating component 200 heating casing 100, motor 400 drives wind wheel 500 to rotate, the air heated through heat generating component 200 becomes hot gas, hot gas is under the rotation of wind wheel 500, enter volute 300 by the air inlet of volute 300 and spray into rectifier box 600 from air outlet, hot gas sprays from nozzle plate 700 uniformly after rectification in rectifier box 600, reaches the object of the corresponding printed circuit board 800 of preheating.Wherein nozzle plate 700 can be set directly on shell 100, does not have rectifier box 600 also can realize preheat function, but arranging rectifier box 600 can make from the hot gas of nozzle plate 700 ejection more even, makes pre-heat effect better.Nozzle plate 700 detachably assembles; the spout size of nozzle plate 700 and shape can be customized according to the situation of printed circuit board 800; same like this preheating device just can adapt to the pre-heat treatment of various printed circuit board 800; adaptable; maximum protection can be obtained to the components and parts on printed circuit board 800, safe and reliable.
Specifically, consult Fig. 2, described shell 100 has inner chamber, and an end face of shell 100 is opening-like, the end of four side end faces of described shell 100 forms the kink for connecting described rectifier box 600 along portion to shell 100 inner bending, kink has screw hole, rectifier box 600 also exists corresponding screw hole, described rectifier box 600 is fixed by screws on described shell 100, is also dismountable naturally.In addition, described shell 100 also can not establish this opening, as long as reserve the osculum being communicated with described rectifier box 600 for described volute 300 at this end face, connects equally by screw.Described shell 100 also offers passage, can supplements cold, also can recycle part hot-air.
Consult Fig. 1 and Fig. 2, described motor 400 is fixed on the top end face of described shell 100, and (top is here just for Fig. 1, when preheating device is assemblied in the below of printed circuit board preheating production line, then this end face is located in the below of the end face that bottom surface is namely connected with rectifier box 600.) middle part, preferably, consult Fig. 1, described volute 300 and wind wheel 500 all possess two and are symmetrical arranged about described shell 100 central shaft, described heat generating component 200 is even number set and is evenly distributed in shell 100 both ends, shown in Fig. 1 is the situation of four groups of heat generating components 200, and both ends arrange two groups respectively.Need owing to there being two wind wheels 500 to rotate, two output shafts must be had, can arrange two motors 400 drives two wind wheels 500 to rotate respectively, also can adopt a motor 400, then by gear, the power of the driving shaft of motor 400 be distributed to two output shafts.Such as, the driving shaft of motor 400 is connected with a driving gear, and driving gear and two driven gear engagements, two driven gears respectively with two output shafts are connected, and this makes it possible to use motor 400 and drive two wind wheels 500 have rotated.
Consult Fig. 2, Fig. 4, described rectifier box 600 has an opening, and described nozzle plate 700 is removably disposed in the opening part of described rectifier box 600.Specifically, described rectifier box 600 comprises the first side plate 630, second side plate, the 3rd side plate and the 4th side plate 640, the end of described first side plate 630, second side plate and the 3rd side plate is bent to form the installation portion 620 carrying described nozzle plate 700 respectively to the inside along portion, have between the end edge of described 4th side plate 640 and described installation portion 620 place plane and be convenient to described nozzle plate 700 and slide into the gap skidded off, nozzle plate 700 like this just can realize dismounting easily and change.Consult Fig. 4, tool screw hole on described installation portion 620, consults Fig. 7, Fig. 8, described nozzle plate 700 also has corresponding screw hole, like this after nozzle plate 700 inserts described rectifier box 600, can fix further nozzle plate 700 with screw, ensure the stability of nozzle plate 700 in warm.Described rectifier box 600 is connected with the air outlet of described volute 300, cowling panel 610 is also provided with in described rectifier box 600, described cowling panel 610 and described nozzle plate 700 be arranged in parallel, consult Fig. 3, described cowling panel 610 has the rectification hole being evenly covered with cowling panel 610, and described cowling panel 610 also can be lamina for doubling plate, if doubling plate, is lined with cushion block between levels.In addition, the detachable of nozzle plate 700 be realized, also can the modes such as clamping be adopted to be connected with described rectifier box 600 nozzle plate 700.
Consult Fig. 7, Fig. 8, described nozzle plate 700 has spout, described spout can be a large mouth, also can be made up of a lot of spray orifices 20 as shown in Figure 7, Figure 8, preferably adopt spray orifice 20 form, the spout of spray orifice 20 form can play rectified action to hot gas, can be that the hot gas of ejection is more even.As shown in Figure 7, when spray orifice 20 is covered with monoblock nozzle plate 700, the pre-heat effect of preheating device can consult Fig. 9, and this can carry out the pre-heat treatment to needing the printed circuit board 800 of large area preheating, also can carry out the pre-heat treatment by the printed circuit board 800 more heat-resisting to those components and parts.When need selectively preheating is carried out to printed circuit board 800 time, then can reduce the distribution area of spray orifice 20, as shown in Figure 7.
Consulting figure Fig. 2, Fig. 4, Figure 10, Figure 11, described nozzle plate 700 also can having for guiding hot gas to the jet pipe 710 on printed circuit board 800.Jet pipe 710 very pointed for hot gas the printed circuit board 800 that leads can will need the position of preheating, and avoid forming excessive influence to the low heatproof components and parts on printed circuit board 800, the guide effect of jet pipe 710 can consult Figure 10 and Figure 11.The shape of shown jet pipe 710 can be selected as required, and as cylinder, the cuboid of straight-tube shape, as shown in Figure 10, and for example cylinder, the cuboid of oblique tubular, jet effect as shown in figure 11 for jet effect.The jet pipe 710 of oblique tubular not only has good guiding function, and can realize accelerating ejection to hot gas, also help the distribution of spray orifice 20, such as, spray orifice 20 concentrates on a place, but need to carry out preheating to diverse location on printed circuit board 800, now tiltedly the guiding function of tubular jet pipe 710 just embodies powerful effect.Described jet pipe 710 can be connected as a single entity with described nozzle plate 700, also can realize removably connecting by the mode such as clamping or magnetic, improves jet pipe 710 flexibility and effect.
Consult Fig. 5, Fig. 6, described heat generating component 200 comprises mount pad 210, heating wire 240, earthenware 220 and ceramic ring 230.Described mount pad 210 comprises fixed head 211, fixed mount 212 and fixed bar 213, described fixed head 211 is two, described fixed mount 212 is fixed between two fixed heads 211, described fixed bar 213 is fixed on described fixed mount 212 and is also evenly arranged, the two ends of described fixed bar 213 respectively arrange a ceramic ring 230, described earthenware 220 is located in described ceramic ring 230, and described heating wire 240 is for generating heat and being wrapped in described earthenware 220 and ceramic ring 230.Described heat generating component 200 is fixed in described shell 100 by mount pad 210, mount pad 210 erects described heating wire 240 makes it unsettled and away from shell 100, ensure that the air in shell 100 can heat uniformly, prevent heating wire 240 pairs of shells 100 from forming localized hyperthermia simultaneously, described ceramic ring 230 and earthenware 220 have heat resistance, and poor thermal conductivity, hinder thermal conductance effect between heating wire 240 and shell 100.Further, described ceramic ring 230 outer wall has two parallel scrobicular rings so that heating wire 240 stable winding.
A kind of pre-heating mean based on described preheating device is below provided, consults Figure 12, comprise the following steps:
S001, above and below printed circuit board preheating production line, all preheating device is set.
Described preheating device be arranged on directly over printed circuit board preheating production line and just issuing, and preheating device is symmetrical arranged about printed circuit board preheating production line up and down.
S002, according to printed circuit board 800 shape, the performance of required processing with need the position of preheating to insert or change corresponding nozzle plate 700.
As shown in Figure 9, when needs are on printed circuit board 800 during whole printed circuit board 800 preheating, just comprehensive preheating can be adopted.As shown in Figure 10, when needs carry out local preheating to printed circuit board 800, and when printed circuit board 800 existing low heatproof components and parts, local is adopted to guide preheating method.
S003, startup heat generating component 200 and motor 400 pairs of printed circuit boards 800 carry out the pre-heat treatment.
Should be understood that; the foregoing is only preferred embodiment of the present invention; be not sufficient to limit technical scheme of the present invention; for those of ordinary skills; within the spirit and principles in the present invention; can be increased and decreased according to the above description, replaced, converted or improved, and all these increases and decreases, replacement, conversion or the technical scheme after improving, all should belong to the protection domain of claims of the present invention.
Claims (7)
1. the preheating device of a printed circuit board, it is characterized in that, comprise the shell with inner chamber, be arranged on the heat generating component for air in heating casing in described shell, to be fixed in described shell and there is the volute of air inlet and air outlet, fixing on the housing and there is the motor that output shaft stretches into described volute, to be arranged on described output shaft and hot gas can be made to enter volute and from the wind wheel of air outlet ejection from air inlet with output shaft rotation, be removably disposed in the nozzle plate described shell is sprayed onto for the hot gas sprayed by described air outlet on printed circuit board, described shell offers passage,
The rectifier box be convenient to hot blast and evenly sprayed is provided with between described shell and described nozzle plate, described rectifier box is fixing on the housing, the intracavity inter-connection of described air outlet and described rectifier box, described rectifier box has an opening, and described nozzle plate is removably disposed in the opening part of described rectifier box; One end face of shell is opening-like, the end of four side end faces of described shell forms the kink for connecting described rectifier box along portion to shell inner bending, kink has screw hole, rectifier box also exists corresponding screw hole, described rectifier box is fixed by screws on described shell;
Described rectifier box comprises the first side plate, the second side plate, the 3rd side plate and the 4th side plate, the end of described first side plate, the second side plate and the 3rd side plate is bent to form the installation portion carrying described nozzle plate respectively to the inside along portion, have to be convenient to described nozzle plate and to slide into the gap skidded off between the end edge of described 4th side plate and described installation portion place plane;
Described nozzle plate have for guiding hot gas to the jet pipe on printed circuit board; Hot gas can lead by jet pipe targetedly printed circuit board needs the position of preheating, avoids forming excessive influence to the low heatproof components and parts on printed circuit board; Described jet pipe and described nozzle plate are connected as a single entity, or removably connect.
2. preheating device according to claim 1, is characterized in that, is also provided with cowling panel in described rectifier box, and described cowling panel and described nozzle plate be arranged in parallel, described cowling panel have the rectification hole being evenly covered with cowling panel.
3. preheating device according to claim 1, is characterized in that, the heating wire that can generate heat after described heat generating component comprises energising, for being wound around the earthenware of heating wire, for the mount pad of fixing described earthenware; Described mount pad is fixed in described shell.
4. preheating device according to claim 3, it is characterized in that, described mount pad is installed with the fixed bar of some even arrangements, the two ends of described fixed bar are provided with the ceramic ring also can locating described earthenware for being wound around heating wire, and described earthenware is located in described ceramic ring.
5. preheating device according to claim 1, it is characterized in that, described motor is positioned at the middle part of described shell, and described volute and described wind wheel all have two and arrange about described housing center axial symmetry, and described heat generating component is even number and is evenly distributed in shell both ends.
6., based on a pre-heating mean for the preheating device described in any one of claim 1-5, it is characterized in that, comprise the following steps:
A, above and below printed circuit board preheating production line, all preheating device is set;
B, printed circuit board shape, performance according to required processing and need the position of preheating to insert or change corresponding nozzle plate;
C, startup heat generating component and motor carry out the pre-heat treatment to printed circuit board.
7. pre-heating mean according to claim 6, it is characterized in that, described steps A specifically comprises: described preheating device to be arranged on directly over printed circuit board preheating production line and immediately below, and preheating device is symmetrical arranged about printed circuit board preheating production line up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310310456.3A CN103357982B (en) | 2013-07-23 | 2013-07-23 | A kind of preheating device of printed circuit board and pre-heating mean |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310310456.3A CN103357982B (en) | 2013-07-23 | 2013-07-23 | A kind of preheating device of printed circuit board and pre-heating mean |
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| CN103357982A CN103357982A (en) | 2013-10-23 |
| CN103357982B true CN103357982B (en) | 2016-01-27 |
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| CN201310310456.3A Active CN103357982B (en) | 2013-07-23 | 2013-07-23 | A kind of preheating device of printed circuit board and pre-heating mean |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108095567B (en) * | 2017-12-08 | 2020-01-31 | 广东美的厨房电器制造有限公司 | Cooking utensil |
| CN110076409B (en) * | 2019-06-12 | 2024-04-02 | 浙江优联智能科技有限公司 | Automatic soldering tin machine of thick film resistor |
| CN110913511B (en) * | 2019-12-16 | 2022-04-12 | 广东美的厨房电器制造有限公司 | Heating furnace and microwave heating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2203522Y (en) * | 1994-06-03 | 1995-07-12 | 江苏省无线电科学研究所 | Hanger moving printed circuit board soldering machine |
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| JP2000340944A (en) * | 1999-05-28 | 2000-12-08 | Meisho Kk | Hot blast blow-out nozzle of solder melting device |
| JP2001077525A (en) * | 1999-09-07 | 2001-03-23 | Matsushita Electric Ind Co Ltd | Reflow heating method and device |
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| CN103357982A (en) | 2013-10-23 |
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