CN2173048Y - Full-automatic changing-light electric welding helmet - Google Patents
Full-automatic changing-light electric welding helmet Download PDFInfo
- Publication number
- CN2173048Y CN2173048Y CN 93243731 CN93243731U CN2173048Y CN 2173048 Y CN2173048 Y CN 2173048Y CN 93243731 CN93243731 CN 93243731 CN 93243731 U CN93243731 U CN 93243731U CN 2173048 Y CN2173048 Y CN 2173048Y
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- CN
- China
- Prior art keywords
- wave generator
- light
- square
- utility
- model
- 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 - Fee Related
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a fully automatic light changing welding helmet. The utility model is characterized in that a light filtering sheet which can weaken infrared light and ultraviolet light and guarantee the good visibility of visible light is additionally arranged in front of the liquid crystal sheet of a pair of welding glasses, and a blue light filtering sheet is additionally arranged in front of a photoelectric tube. The dark state and the bright state of the liquid crystal sheet are controlled by a square wave generator, and the square wave generator is controlled by the photoelectric tube and a transistor automatically. Because the utility model can change light automatically, the utility model not only effectively protects the eyes of an operator from being injured, but also enables the operator to see the weld joints of workpieces clearly. Besides, a mask does not need moving frequently in operation, which improves the work efficiency. The power supply of a circuit adopts solar cells, which avoids the trouble caused by frequent cell replacement.
Description
This utility model relates to a kind of optics and the technology of electrical application on welding helmet, particularly a kind of fully-automatic conversion photoelectricity weld cap that is used for electric welding operator labor protection.
At present, in large shipbuilding factory, construction site etc., brought into use a kind of fully-automatic conversion photoelectricity weld cap.But existing this welding helmet is because some insoluble problems in use often appear in the limitation of its structure and electronic control circuit.Mainly contain: when 1, using in strong bias light, photocell works, and liquid crystal energising blackening can't be seen soldered workpiece; 2, can not effectively decay to the deleterious infrared light of eyes; 3, the electronic control circuit power consumption is big, and it is frequent to change battery, uses inconvenient.
The purpose of this utility model just provides a kind ofly to be had good infrared light, ultraviolet light and the intensive visible light of preventing eye is damaged, and power consumption is little, improvement fully-automatic conversion photoelectricity weld cap easy to use.
The purpose of this utility model is to adopt following technical proposals to realize:
1, in order to make photocell inoperative under high light,, installs blue colo(u)r filter additional in the photocell front to guarantee welding operator's visible weldment before weldering.
2, install to decay deleterious infrared light and ultraviolet light additional in the LCD panel front, and can guarantee that again the visible light part has the optical filter than good visibility before welding.
3,, designed the square-wave generator of low-power consumption in the electronic control circuit part; And set up solar cell, avoided changing the trouble of battery.
Below in conjunction with accompanying drawing this utility model is described in detail.
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is square-wave generator layouts of the present utility model.
In the accompanying drawing, infrared, the ultraviolet filter of LHZ-, L
1, L
2, L
3-Lan colo(u)r filter, Y
1, Y
2-LCD panel, P
1, P
2, P
3-visible light photocell, PV-solar cell, S-square-wave generator.
Fully-automatic conversion photoelectricity weld cap described in the utility model is the electric welding mirror that is made of optical filter, LCD panel, control circuit and elements such as square-wave generator, solar cell, and can wear that overhead electric welding protective mask forms.
As shown in Figure 1, LCD panel Y
1, Y
2The front install can decay a deleterious infrared light and a ultraviolet light additional, and can guarantee that visible light has the optical filter LHZ than good visibility again before spot welding; At photocell P
1, P
2, P
3The front, install a blue colo(u)r filter L respectively additional
1, L
2, L
3LCD panel Y
1, and Y
2Be attempted by on the output terminals A end and B end of square-wave generator S; Photocell P
1, P
2, P
3An end through adjustable resistance R
4And resistance R
3, the other end is through transistor T
5, T
6, be connected on the C end and D end of square-wave generator S; Battery E
CWith the anode of solar battery P V through K switch, negative terminal is through transistor T
5, T
6, be connected on the C end and D end of square-wave generator S, be the entire circuit power supply.Transistor T
5And T
6For the power supply of square-wave generator S plays conducting and shutoff.
The structure of square-wave generator S as shown in Figure 2.Crystal triode T
1And T
2Colelctor electrode be connected to A end, T
1And T
2Base stage between connect resistance R
1, pass through capacitor C again respectively
1And C
2Be connected in the B end; Audion T
3And T
4Colelctor electrode be connected to B end, T mutually
3And T
4Base stage between connect resistance R
2, pass through capacitor C again respectively
3And C
4Be connected in the A end.T
1And T
3, T
2And T
4Emitter stage be connected to C end and D end, C end and D hold by K switch and battery E
CWith solar battery P V and connect.
This utility model is at first made the electric welding mirror according to the structure of Fig. 1, then the electric welding mirror is contained on the protective mast.
Before the welding, operator wear this fully-automatic conversion photoelectricity weld cap, connect K switch, battery E
CWith solar battery P V be entire circuit power supply.Under the condition of bias light at that time, regulate resistance R
4, make and flow through crystal triode T
5Base current increase, cause audion T
6Be in saturation.At this moment, battery E
CWith solar battery P V through audion T
6Give square-wave generator S power supply.Square-wave generator S as shown in Figure 2 produces the square wave of a certain frequency and voltage magnitude.This square wave exports LCD panel Y to from A, B two ends
1And Y
2Two electrode tips.At this moment be in the LCD panel Y of dark attitude
1And Y
2Become bright attitude, the operator can be by the LCD panel Y of electric welding mirror
1And Y
2And the optical filter LHZ of infrared light, ultraviolet light can clearly see workpiece to be welded.When the welding beginning, electro-welding arc is through blue colo(u)r filter L
1, L
2, L
3, make photocell P
1, P
2, P
3Electric current increase, flow through audion T simultaneously
5Base current reduce, make audion T
6Be in cut-off state, then square-wave generator S power down, A, B two ends do not have square wave output, LCD panel Y
1, Y
2Become dark attitude by bright attitude rapidly.The operator of this moment can only see filtering to the deleterious infrared light of eyes, ultraviolet light by the electric welding mirror, and visible light is decayed to MIN electric welding luminous point and contiguous workpiece weld seam.When welding operation stops, LCD panel Y
1And Y
2Return to bright attitude from dark attitude again, wait for welding next time.
The utility model has the advantages that to have good infrared light, ultraviolet light and the strong visible light of preventing to the injury effect of eye, and guarantee still can see workpiece clearly under the high light; Power consumption is little, the work efficiency height.
Claims (2)
1, a kind of fully-automatic conversion photoelectricity weld cap that is made of electric welding mirror and protective mast is characterized in that the electric welding mirror is by optical filter LHZ, L
1, L
2, L
3, LCD panel Y
1, Y
2, photocell P
1, P
2, P
3, control circuit and square-wave generator S, and element such as solar battery P V is formed LCD panel Y
1, Y
2The front installs the infrared light of decaying, ultraviolet light additional and can guarantee that visible light has the optical filter LHZ than good visibility, photocell P before spot welding
1, P
2, P
3The front respectively installs a blue colo(u)r filter L additional
1, L
2, L
3, LCD panel Y
1, Y
2Be attempted by on the output terminals A end and B end of square-wave generator S photocell P
1, P
2, P
3One end is through adjustable resistance R
4And resistance R
3, the other end is through transistor T
5, T
6, be connected on the C end and D end of square-wave generator S battery E
0With the anode of solar battery P V through K switch, negative terminal is through transistor T
5, T
6, be attempted by respectively on the C end and D end of square-wave generator S.
2, by the described fully-automatic conversion photoelectricity of claim 1 weld cap, it is characterized in that the audion T among the square-wave generator S
1And T
2Colelctor electrode be connected in A end, T
1And T
2Base stage between connect resistance R
1, pass through capacitor C again respectively
1And C
2Be connected in the B end, audion T
3And T
4Colelctor electrode be connected to B end, T mutually
3And T
4Base stage between connect resistance R
2, pass through capacitor C again respectively
3And C
4Be connected in the A end, T
1And T
3, T
2And T
4Emitter stage be connected to C end and D end respectively, C end and D hold by K switch and battery E
CWith solar battery P V and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243731 CN2173048Y (en) | 1993-11-05 | 1993-11-05 | Full-automatic changing-light electric welding helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243731 CN2173048Y (en) | 1993-11-05 | 1993-11-05 | Full-automatic changing-light electric welding helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2173048Y true CN2173048Y (en) | 1994-08-03 |
Family
ID=33817124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93243731 Expired - Fee Related CN2173048Y (en) | 1993-11-05 | 1993-11-05 | Full-automatic changing-light electric welding helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2173048Y (en) |
-
1993
- 1993-11-05 CN CN 93243731 patent/CN2173048Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |