CN201997830U - Air-out device of reflow oven - Google Patents
Air-out device of reflow oven Download PDFInfo
- Publication number
- CN201997830U CN201997830U CN2011200600801U CN201120060080U CN201997830U CN 201997830 U CN201997830 U CN 201997830U CN 2011200600801 U CN2011200600801 U CN 2011200600801U CN 201120060080 U CN201120060080 U CN 201120060080U CN 201997830 U CN201997830 U CN 201997830U
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- nozzle
- thermal insulation
- air
- insulation board
- cap
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Abstract
The utility model discloses an air-out device of a reflow oven, which comprises an air-out plate and nozzles. A plurality of air-out holes are arranged on the air-out plate, the nozzles which are one to one corresponding to the air-out holes are installed under the air-out plate, and the nozzles are communicated with the air-out holes. A heat insulation plate is disposed under each of the nozzles, the heat insulation plate is provided with a first through hole for the nozzle to penetrate through, and the first through hole is opened and closed through a cover on the heat insulation plate. Further, the heat insulation plate is connected to the air-out plate through a lifting mechanism. By selectively utilizing the heat insulation plates corresponding to the nozzles at different positions, heat insulation plate arrays required by different printed circuit boards (PCBs) are formed to decrease temperature difference of the surfaces of the PCBs. Compared with the prior art, the air-out device of the reflow oven is suitable for all PCBs, thereby reducing total manufacturing cycle of the PCBs and lowering production cost.
Description
Technical field
The utility model relates to the Reflow Soldering manufacture field, especially a kind of reflow ovens go out wind apparatus.
Background technology
The Reflow Soldering operation is the important component part of SMT production line in the electronic manufacturing field.At present, the main flow reflow ovens is generally taked the hot blast heating, and pcb board and hot blast pass through heat convection.But because the components and parts size and the density degree of arranging on same pcb board, and the employed material of components and parts and thickness are inequality, cause the non-uniform temperature on pcb board surface.And because the scolder fusing point of unleaded welding procedure has the high 30-40 of kupper solder ℃ than traditional, therefore the temperature difference on pcb board surface is bigger in unleaded welding procedure, have up to 20-30 ℃.The bigger temperature difference can cause the pcb board warpage, even causes quality problems such as can't satisfying process window.
At present, the solution of employing is, thermal insulation board is installed above pcb board, reduces pcb board temperature the rise too fast zone and the heat convection of hot-air chamber by thermal insulation board, thereby reaches the purpose of the minimizing pcb board temperature difference.But, because the components and parts of arranging on the different pcb boards are also different, thereby need heat insulation zone different, therefore, each pcb board all needs a supporting with it thermal insulation board, makes thermal insulation board and has not only prolonged the pcb board manufacturing cycle, but also increased cost.
Summary of the invention
The purpose of this utility model is, the wind apparatus that goes out of the good reflow ovens of a kind of versatility is provided, and to shorten the manufacturing cycle, reduces cost.
The disclosed a kind of reflow ovens of the utility model go out wind apparatus, comprise aerofoil and nozzle, go out on the aerofoil to offer a plurality of exhaust vents described, and this go out aerofoil below be equipped with and the described one to one nozzle of described exhaust vent, and this nozzle is communicated with described exhaust vent, below each described nozzle, be equipped with thermal insulation board, on this thermal insulation board, be provided with first through hole that penetrates for described nozzle, this first through hole is opened and closed by the capping that is located on the thermal insulation board, and described thermal insulation board goes out aerofoil and is connected with described through elevating mechanism.
Preferably, described elevating mechanism comprises two first screw rods, two first nuts and is located at described two second through holes that go out on the aerofoil, these two first screw rods vertically are provided with, its lower end is connected with described thermal insulation board respectively, and the upper end is passed described two second through holes respectively and is connected with described two first nut threads respectively.
Preferably, at least one described nozzle volume adjusting apparatus is installed, this volume adjusting apparatus comprises the up-small and down-big conical nozzle cap of being located at described nozzle exit and drives the governor motion that this cap of spraying nozzle moves up and down with respect to described nozzle.
Further preferably, described governor motion comprises second screw rod and second nut, and this second screw rod is located in the described nozzle, and its lower end is connected with described cap of spraying nozzle, and the upper end passes and describedly goes out aerofoil and be connected with described second nut thread.
Further preferably, described governor motion comprises the internal thread of being located at the external screw thread on the described cap of spraying nozzle lateral surface and matching with this external screw thread, be circumferentially with at least two fixed blocks on the lower end of described nozzle inwall edge, the inclined-plane of the radially inner side face of this fixed block for matching with the conical surface of described cap of spraying nozzle, be provided with described internal thread on this inclined-plane, this fixed block is threaded with described cap of spraying nozzle through this internal thread and described external screw thread.
Compared with prior art, the utility model has the advantages that:
(1) highly versatile, by optionally using the pairing thermal insulation board of diverse location nozzle, to form at the needed thermal insulation board array of different pcb boards, reduce the temperature difference on PCB surface, therefore, the utility model can be applicable to all pcb boards, thereby has reduced total manufacturing cycle of pcb board, has reduced production cost;
(2) distance between thermal insulation board and the pcb board can accurately be regulated by elevating mechanism, is convenient to accurately control the temperature on pcb board surface, makes the temperature difference on pcb board surface littler;
(3) by exit the size that cap of spraying nozzle is regulated the nozzle air output is installed,, makes the temperature difference on pcb board surface littler accurately to control the temperature on pcb board surface at each nozzle.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the structure of nozzle schematic diagram of one of them embodiment of the utility model;
Fig. 4 is the structure of nozzle schematic diagram of another embodiment of the utility model;
Fig. 5 is that the B of Fig. 4 is to view.
Description of reference numerals: 1, go out aerofoil; 2, first screw rod; 3, thermal insulation board; 3a, first through hole; 4, pcb board; 5, capping; 6, nozzle; 7, first nut; 8, cap of spraying nozzle; 9, second screw rod; 10, second nut; 11, bearing pin; 12, fixed block.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
One of them embodiment of the present utility model as shown in Figure 1 to Figure 3, reflow ovens go out wind apparatus mainly by going out aerofoil 1 and nozzle 6 is formed, going out to offer on the aerofoil 1 a plurality of exhaust vents (not shown on the figure), and this go out aerofoil 1 below be equipped with and exhaust vent nozzle 6 one to one, and this nozzle 6 is communicated with exhaust vent.Below each nozzle 6, be equipped with thermal insulation board 3, on this thermal insulation board 3, be provided with the first through hole 3a that penetrates for nozzle 6.Lower surface at thermal insulation board 3 is equipped with the capping 5 that is used to open and close the first through hole 3a, and this capping 5 is hinged on the thermal insulation board 3 through bearing pin 11.
On at least one nozzle 6, volume adjusting apparatus is installed, Figure 3 shows that one of them embodiment of volume adjusting apparatus, this volume adjusting apparatus is made up of cap of spraying nozzle 8, second screw rod 9 and second nut 10, wherein cap of spraying nozzle 8 is up-small and down-big taper, this cap of spraying nozzle 8 is located at the exit of nozzle 6, second screw rod 9 is located in the described nozzle 6, fixedlys connected with cap of spraying nozzle 8 in its lower end, and the upper end passes out aerofoil 1 and is threaded with second nut 10.By rotating second nut 10, the just size of adjustable nozzles 6 air outputs, thus reach the purpose of regulating pcb board 4 surface temperatures.
Fig. 3 and Figure 4 shows that another embodiment of volume adjusting apparatus, this volume adjusting apparatus mainly is made up of cap of spraying nozzle 8 and four fixed blocks 12, wherein cap of spraying nozzle 8 is up-small and down-big taper, and this cap of spraying nozzle 8 is located at the exit of nozzle 6, is provided with external screw thread on the lateral surface of this cap of spraying nozzle 8.Four fixed blocks 12 are along circumferentially evenly being fixed on the inwall of nozzle lower end, the inclined-plane of the radially inner side face of this fixed block 1 for matching with the conical surface of cap of spraying nozzle 8, be provided with the internal thread that matches with described external screw thread on this inclined-plane, fixed block 12 is threaded through internal thread and external screw thread with cap of spraying nozzle 8.By swivel nozzle cap 8, the just size of adjustable nozzles 6 air outputs, thus reach the purpose of regulating pcb board 4 surface temperatures.
During use, at first, according to the characteristics of components and parts on the pcb board 4, judging needs to use the zone of thermal insulation board 3 and the zone that does not need to use thermal insulation board 3, in the zone that needs use thermal insulation board 3, regulate the distance of thermal insulation board 3 and pcb board 4 to correct position by rotating two first nuts 7; In the zone that does not need to use thermal insulation board 3, by rotating two first nuts 7, with the position that moves on the thermal insulation board 3 above thermal insulation board 3 height, this moment, nozzle 6 penetrated in the first through hole 3a of thermal insulation board 3, was assembled into thermal insulation board 3 arrays like this.After having increased thermal insulation board 3 arrays, too fast zone and the convection transfer rate between the hot blast of temperature rising will reduce on the pcb board 4, and then realize regulating the purpose of Temperature Distribution on the pcb board 4.In addition, different according to manufactured materials and shape, thermal insulation board 3 can be designed as a cover series, at the concrete characteristics of pcb board 4, selects to use different thermal insulation boards 3, optimizes the effect of regulating pcb board 4 temperature difference.
Only be specific embodiment of the utility model below, do not limit protection domain of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection domain of the present utility model.
Claims (5)
- A reflow ovens go out wind apparatus, comprise aerofoil and nozzle, go out on the aerofoil to offer a plurality of exhaust vents described, and this go out aerofoil below be equipped with and the described one to one nozzle of described exhaust vent, and this nozzle is communicated with described exhaust vent; It is characterized in that: below each described nozzle, be equipped with thermal insulation board, on this thermal insulation board, be provided with first through hole that penetrates for described nozzle, this first through hole is opened and closed by the capping that is located on the thermal insulation board, and described thermal insulation board goes out aerofoil and is connected with described through elevating mechanism.
- 2. reflow ovens according to claim 1 goes out wind apparatus, it is characterized in that: described elevating mechanism comprises two first screw rods, two first nuts and is located at described two second through holes that go out on the aerofoil, these two first screw rods vertically are provided with, its lower end is connected with described thermal insulation board respectively, and the upper end is passed described two second through holes respectively and is connected with described two first nut threads respectively.
- 3. reflow ovens according to claim 1 and 2 goes out wind apparatus, it is characterized in that: at least one described nozzle volume adjusting apparatus is installed, this volume adjusting apparatus comprises the up-small and down-big conical nozzle cap of being located at described nozzle exit and drives the governor motion that this cap of spraying nozzle moves up and down with respect to described nozzle.
- 4. reflow ovens according to claim 3 goes out wind apparatus, it is characterized in that: described governor motion comprises second screw rod and second nut, this second screw rod is located in the described nozzle, and its lower end is connected with described cap of spraying nozzle, and the upper end passes and describedly goes out aerofoil and be connected with described second nut thread.
- 5. reflow ovens according to claim 3 goes out wind apparatus, it is characterized in that: described governor motion comprises the internal thread of being located at the external screw thread on the described cap of spraying nozzle lateral surface and matching with this external screw thread, be circumferentially with at least two fixed blocks on the lower end of described nozzle inwall edge, the inclined-plane of the radially inner side face of this fixed block for matching with the conical surface of described cap of spraying nozzle, be provided with described internal thread on this inclined-plane, this fixed block is threaded with described cap of spraying nozzle through this internal thread and described external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200600801U CN201997830U (en) | 2011-03-09 | 2011-03-09 | Air-out device of reflow oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200600801U CN201997830U (en) | 2011-03-09 | 2011-03-09 | Air-out device of reflow oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201997830U true CN201997830U (en) | 2011-10-05 |
Family
ID=44700604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200600801U Expired - Lifetime CN201997830U (en) | 2011-03-09 | 2011-03-09 | Air-out device of reflow oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201997830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113171484A (en) * | 2021-03-25 | 2021-07-27 | 水本有限公司 | Sterilizing and disinfecting spraying device capable of adjusting spraying state |
-
2011
- 2011-03-09 CN CN2011200600801U patent/CN201997830U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113171484A (en) * | 2021-03-25 | 2021-07-27 | 水本有限公司 | Sterilizing and disinfecting spraying device capable of adjusting spraying state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
|
| CX01 | Expiry of patent term |