CN2433040Y - Welder with waste gas retrieving device - Google Patents
Welder with waste gas retrieving device Download PDFInfo
- Publication number
- CN2433040Y CN2433040Y CN 00242948 CN00242948U CN2433040Y CN 2433040 Y CN2433040 Y CN 2433040Y CN 00242948 CN00242948 CN 00242948 CN 00242948 U CN00242948 U CN 00242948U CN 2433040 Y CN2433040 Y CN 2433040Y
- Authority
- CN
- China
- Prior art keywords
- waste gas
- conveyer belt
- hot weld
- recovery area
- reflow machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a welder with a waste gas retrieving device, which comprises a machine body, a plurality of hot welding zones inside the machine body and a waste gas retrieving zone inside the machine body adjacent to an outlet. In the waste gas retrieving zone, gas is repeatedly circulated by a wheel-shaped fan, and gasified harmful substance on waste gas is liquefied by a cooling body and attached by a filter screen. Therefore, the welder with a waste gas retrieving device has the advantages of waste gas purifying effect, effective harmful substance overflow prevention on the atmosphere and low cost.
Description
The utility model relates to a kind of reflow machine.
General using surface mount technology (SMT, Surface Mount Technology) electric connection of carrying out between electronic component and circuit board is more and more general, and the welding that utilizes surface mount technology mostly earlier on the pin of electronic component or circuit board corresponding contact place be coated with solder flux (as tin cream), then after electronic component is positioned on the circuit board, use the reflow machine to heat to make the solder flux fusion and allow the pin of electronic component be welded on the corresponding contact, reach and make electronic component be fixed in the effect of circuit board and between the two electric connection.
As shown in Figure 1, 2, be reflow machine 1 in the past, comprise plural hot weld district 12 in this body 11 of a body 11 and tandem (be in the present embodiment be example with four groups).This body 11 has an input port 111, a delivery outlet 112 and relative with this input port 111 and is suitable for the bearer circuit plate in this input port 111 and 112 of delivery outlets move and conveyer belts 113 by this hot weld district 12, cooperate shown in Figure 3, each hot weld district 12 interior wheeled fan 121 that are provided with in conveyer belt 113 belows, and a heat exchanger 122 that can produce hot gas is set above this conveyer belt 113, and this heat exchanger 122 a baffler 123 with most holes is set respectively up and down.Be provided with whereby, the heat that air is distributed by this heat exchanger 122 can become hot-air, and hot-air is subjected to the effect of this wheeled fan 121 and can become the stream of supplying gas under stable when moving down through the hole of this baffler 123, and hot-air is dispersed evenly on the circuit board 2 on the conveyer belt 113.Through after the heating in this hot weld district 12, solder flux on it is heated and fusion and reach the effect of welding at the circuit board on this conveyer belt 113 2.
But, because the temperature in each hot weld district 12 must reach the degree that is enough to melt flux, temperature (set according to need by this temperature according to this, as 175 ℃, 270 ℃ etc.) will make some harmful substances such as resin, solvent etc., volatilization is pernicious gas in the process of heating, and will be when heat weldable circuit board 2 is sent in delivery outlet 112 at this conveyer belt 113, these waste gas that comprise pernicious gas also overflow thereupon and intersperse among in the atmosphere, therefore all can exert an adverse impact to environment and human body.
In addition, under the general atmosphere environment, be engaged in above-mentioned operation, will because of in the air up to one one-tenth above oxygen content, make the metal pin and the circuit board of electronic component supply the tail partial oxidation of pin welding, and need increase the consumption of solder flux, or use a large amount of scaling powders, therefore, more increase pollution dose to environment.For avoiding this situation to take place, having a kind of is to charge into nitrogen in the reflow machine, reduce the improvement function mode of oxygen concentration in the operating environment, but, owing to waste gas recovering device is not set in the existing technology, harmful substance progressively discharges with the air that charges into behind the nitrogen, for keeping the high nitrogen gas concn of operating environment, have to continuing to charge in a large number nitrogen in the reflow machine, thereby improved operating cost.
The purpose of this utility model is to provide a kind of harmful substance that reduces to overflow in atmosphere, and effectively saves and use nitrogen, reduces the reflow machine of the tool waste gas recovering device of the environment-friendly type of using the gas cost.
The technical solution of the utility model is to provide a kind of reflow machine with waste gas recovering device, comprise a body and most hot weld districts, this body has an input port, one delivery outlet and relative with this input port carries this circuit board moves to this delivery outlet from this input port conveyer belt, this hot weld district be for this conveyer belt pass and tandem in this body, the heater that configuration one can be sent to hot gas the circuit board on this conveyer belt in this hot weld district respectively, it is characterized in that: also comprise a waste gas recovery area, this waste gas recovery area passes and is listed in this body and near equipped at outlet port with the hot weld district for this conveyer belt, and this waste gas recovery area comprises that one is positioned at the wheeled fan of this conveyer belt below and is positioned at the cooling body and a filter screen of a cooling air of this conveyer belt top.
The reflow machine of described tool waste gas recovering device is characterized in that: this cooling body is a heat exchanger.
The reflow machine of described tool waste gas recovering device is characterized in that: this filter screen is the top that is positioned at this cooling body.
By above-mentioned explanation, have following advantage really at the utility model as can be known:
1. reducing harmful substance overflows in atmosphere:
The utility model is by the setting of this waste gas recovery area, made before air is spilled over to environment with circuit board, can absorb through the cooling body liquefaction harmful substance of this waste gas recovery area and by filter screen, the harmful substance that contains in the waste gas of being discharged by this delivery outlet of reflow machine is significantly reduced, to reach the effect that reclaims waste gas, and allow the reflow machine discharge to human body and environmentally friendly gas, may be effectively to avoid waste gas to the harm of human body generation, and compliance with environmental protection requirements.
2. reduce the cost of utilization nitrogen:
Because the effect of this waste gas recovery area, allow the harmful substance that is contained in it reduce in a large number, and form the gas circulation of high flow capacity by the action of this wheeled fan, make a large amount of reductions contain the gas of nitrogen by this delivery outlet spill-out, and can effectively keep nitrogen in the reflow machine, therefore be not required to be the high nitrogen gas concn of keeping operating environment and continue to charge in a large number nitrogen, and reach the effect that effective saving is used nitrogen and reduced utilization gas cost.
Be elaborated below by most preferred embodiment and accompanying drawing reflow machine to tool waste gas recovering device of the present utility model:
Fig. 1 is the stereogram of reflow machine in the past.
Fig. 2 is the cutaway view of reflow machine in the past.
Fig. 3 is the partial sectional view of reflow machine in the past.
Fig. 4 is the cutaway view of the utility model preferred embodiment.
Fig. 5 is the cutaway view of the waste gas recovery area of the utility model preferred embodiment.
As shown in Figure 4, the reflow machine of the tool waste gas recovering device of the utility model preferred embodiment comprises a body 3, four hot weld districts 4 and waste gas recovery areas 5.
This body 3 has an input port 31, a delivery outlet 32 and relative with this input port 31 and is suitable for the bearer circuit plate in this input port 31 and 32 mobile conveyer belts 33 of delivery outlet.Having in this body 3 can be for the accommodation space (figure does not show) of ccontaining this hot weld district 4 and waste gas recovery area 5.
Each hot weld district 4 is in the accommodation space of tandem in this body 3 and this conveyer belt 33 passes its middle position, and respectively this hot weld district 4 is made up of with a wheeled fan 43 that is positioned at these conveyer belt 33 belows a heater 41 that is positioned at these conveyer belt 33 tops and a diversion member 42.Wherein, in the present embodiment, this heater 41 is the heat exchangers that can produce hot gas, and this diversion member 42 comprises that two lay respectively at these heater 41 upper and lowers and have the cowling panel 421 (mesh plate) of most holes that evenly gather, when this wheeled fan 43 moves with heater 41, this wheeled fan 43 is to concentrate downward air draught and allow air discharge in all sides, air can be followed flow to through being positioned at the cowling panel 421 of these heater 41 tops, heater 41 heating of being flowed through downwards by the following suction of this wheeled fan 43 are again sent down with another cowling panel 421 backs and are formed a directed circulation (as Fig. 3 in the past), and at air during through the hole of this cowling panel 421, become hot-air stable and that send down equably, but make the circuit board thermally equivalent that is positioned on this conveyer belt 33, reach the purpose of heater circuit plate.In addition, the temperature of utilizing heater 41 to be arrived in each hot weld district 4 can be adjusted in different temperatures according to need.Specifically, though present embodiment is that four hot weld districts 4 are set in this body 3, but the number in this hot weld district 4 is not limited thereto number, but can be according to welding heat district 4 numbers of actual needs adjustment setting, and because of this body 3 is not the feature of this case with hot weld district 4 members such as grade, so no longer be described in detail at this.
As shown in Figure 5, this waste gas recovery area 5 be for conveyer belt 33 pass and with hot weld district 4 tandems in this body 3, this waste gas recovery area 5 is in the position near this delivery outlet 32, the circuit board 6 of just borrowing this conveyer belt 33 to move is sent last district of processes before the body 3, but this waste gas recovery area 5 comprises cooling body 51, a filter screen 52 of a cooling air that is positioned at these conveyer belt 33 tops and is positioned at the wheeled fan 53 of a high flow capacity of these conveyer belt 33 belows.In the present embodiment, this filter screen 52 is the tops that are arranged at cooling body 51, but this cooling body 51 is the heat exchanger of cooling air, and this wheeled fan 53 send the fan of type with hot weld district 4 for suction side under identical, whereby, during 53 actions of the wheeled fan of this of high flow capacity, allow air by this filter screen 52 downwards through cooling body 51 to wheeled fan 53, send and the filter screen 52 that arrives by the side of this wheeled fan 53 again, to form a directed cyclic process that refluxes.After these hot weld district 4 heating of front, making that the harmful substance of solvent and resin and so on is volatilized because of aforesaid heating on this circuit board 6 flows in the air, therefore the waste gas of harmful substance that is doped with gasification is before sending, can enter in the gas recycle process in this waste gas recovery area 5, again after circulation for several times, the harmful substance of gasification can make its temperature descend because of the cooling of this cooling body 51 and liquefy, and adhere to the harmful substance of liquefaction by this filter screen 52, therefore in this waste gas recovery area 5 after gas circulation repeatedly, can allow in the gas harmful substance of the gaseous state of the overwhelming majority liquefy because of the effect of this cooling body 51 is attached on the filter screen 52, make the air that overflows in delivery outlet 11 with this circuit board 6 output can be because of being purified through this waste gas recovery area 5, and, make the waste gas that originally includes harmful substances by effectively reclaiming because of these wheeled fan 53 actions of high flow capacity reduce by the excessive gas flow of delivery outlet according to bernoulli's equation.In addition, after use a period of time, can be by changing the quality that this filter screen 52 guarantee that waste gas reclaims.Specifically,, allow the placement of this filter screen 52 be not limited to the position of present embodiment, other appropriate locations that also can be below this cooling body 51 and so on because gas is in the repeatedly cyclic process of this waste gas recovery area 5.
Claims (3)
1. the reflow machine of a tool waste gas recovering device, comprise a body and most hot weld districts, this body has an input port, one delivery outlet and relative with this input port carries this circuit board moves to this delivery outlet from this input port conveyer belt, this hot weld district be for this conveyer belt pass and tandem in this body, respectively configuration one is sent to the heater of the circuit board on this conveyer belt with hot gas in this hot weld district, it is characterized in that: also comprise a waste gas recovery area, this waste gas recovery area passes and is listed in this body and near equipped at outlet port with the hot weld district for this conveyer belt, and this waste gas recovery area comprises that one is positioned at the wheeled fan of this conveyer belt below and is positioned at the cooling body and a filter screen of a cooling air of this conveyer belt top.
2. the reflow machine of tool waste gas recovering device as claimed in claim 1 is characterized in that: this cooling body is a heat exchanger.
3. the reflow machine of tool waste gas recovering device as claimed in claim 1 or 2 is characterized in that: this filter screen is the top that is positioned at this cooling body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00242948 CN2433040Y (en) | 2000-07-04 | 2000-07-04 | Welder with waste gas retrieving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00242948 CN2433040Y (en) | 2000-07-04 | 2000-07-04 | Welder with waste gas retrieving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2433040Y true CN2433040Y (en) | 2001-06-06 |
Family
ID=33602962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00242948 Expired - Lifetime CN2433040Y (en) | 2000-07-04 | 2000-07-04 | Welder with waste gas retrieving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2433040Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931768A (en) * | 2017-12-29 | 2018-04-20 | 山东才聚电子科技有限公司 | A kind of vacuum brazing stove and welding procedure |
| CN116547098A (en) * | 2020-11-12 | 2023-08-04 | 千住金属工业株式会社 | Welding device |
-
2000
- 2000-07-04 CN CN 00242948 patent/CN2433040Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931768A (en) * | 2017-12-29 | 2018-04-20 | 山东才聚电子科技有限公司 | A kind of vacuum brazing stove and welding procedure |
| CN116547098A (en) * | 2020-11-12 | 2023-08-04 | 千住金属工业株式会社 | Welding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010606 |