CN1177470A - Shutter type automatic protecting mask for electric welding - Google Patents
Shutter type automatic protecting mask for electric welding Download PDFInfo
- Publication number
- CN1177470A CN1177470A CN 97107068 CN97107068A CN1177470A CN 1177470 A CN1177470 A CN 1177470A CN 97107068 CN97107068 CN 97107068 CN 97107068 A CN97107068 A CN 97107068A CN 1177470 A CN1177470 A CN 1177470A
- Authority
- CN
- China
- Prior art keywords
- shading
- clutch
- brake sack
- face shield
- mirror
- 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.)
- Pending
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Abstract
The present invention provides an arc-welding helmet which is characterized by that the protective window of the arc-welding helmet is designed into the form of louver, and the voltage of the output end of the welding machine is used as signal, a relay is used to convert said signal to control the protective window to quickly close or slowly open the protective window to implement automatic protection.
Description
The invention belongs to the electric welder and use automatic face shield for welders
For quality and the work efficiency that improves arc welding, and protect the electric welder to exempt from welding flash eyes and face, countries in the world are all at the development automatic face shield for welders.At present, disclosing a kind of among the Chinese patent CN87107392A is the automatic face shield for welders of brake sack with the liquid crystal display screen; A kind of automatic face shield for welders with the driven by servomotor brake sack is disclosed among the Chinese patent CN1070100A; In addition, a kind of face shield for welders that moves brake sack with electric magnet is disclosed among the Chinese patent CN1060596A.In existing these technology, electronic circuit is all adopted in the taking-up of its control signal, and cost is higher and technology is complicated, very unfavorable in actual applications.In addition, adopt liquid crystal display screen to make brake sack cost height, easily aging, and can not use at low temperatures.With driven by servomotor brake sack movably, though reduced the cost of brake sack, servomotor costs an arm and a leg among the CN1070100A, and totle drilling cost is still very high.Drive brake sack with relay among the CN1060596A; its unlatching and closing velocity are all very fast, and welding circuit instantaneous cutout occurs through regular meeting during striking, so that this face shield moves when striking is unstable; easily make the operator be subjected to of short duration arc light irradiation, be unfavorable for applying
The present invention has overcome the deficiency of above-mentioned prior art, and the sunscreen protection mirror can be ahead of arc light and close rapidly, opens then slowly relatively, and during welding operation moment cutout, brake sack can not opened immediately, steady operation in the time of can guaranteeing striking like this.In addition, the control signal extraction system has also adopted safer reliable device.
The present invention mainly finishes by following measure: 1, utilize shutter folding principle, rotate brake sack with very little displacement, realize shading and printing opacity; 2, with the electric magnet solenoidoperated cluthes make shading mirror when closing and motor break away from, under spring action, close, and when opening by motor drives, realize closing rapidly, slowly open; 3, directly be connected on welding terminal with a high impedance relay, welding machine is converted into the switching signal of control face shield at the low-voltage in when welding and the high voltage when unloaded.
The clutch engagement of venetian blind type shading mirror and magnet control makes the present invention realize face shield steady operation when striking, and has overcome shortcomings such as the liquid crystal face shield cost high life is short; Only making signal adapter with a relay has simplified chromacoder greatly.The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the shutter type automatic protecting mask for electric welding schematic diagram.
Fig. 2 is a shutter type automatic protecting mask for electric welding agent structure sketch map.
Fig. 3 rotates the folding schematic diagram for brake sack.
Fig. 4 is a shading mirror opening sketch map.
Fig. 5 is a shading mirror closed condition sketch map.
In Fig. 1, shutter type automatic protecting mask for electric welding is made up of relay (4), face shield working power (5), motor (6), clutch (7), electric magnet (8), travel switch (9), lower drive shaft (10), drive pulley (11), driving-belt (12), drive link (13), brake sack (14), last power transmission shaft (15), returning spring (16).Wherein welding machine (1), welding rod (2), weldment (3) are as shown.
Brake sack (14) is made by thin organic material, general optional 5-8 sheet, and its color depth grade can be chosen with reference to the countries concerned's standard.Every brake sack all can rotate with two dwangs (13) that are fixed on two ends.Two drive pulleys (11) respectively are equipped with at lower drive shaft (10) and last power transmission shaft (15) two ends.The working power of relay (4) is connected on the outfan of welding machine (1), and face shield working power (5) is passed on the face shield by the normally open contact of relay.When welding rod (2) and weldment (3) when contacting, 40-60% when welding terminal voltage is reduced to zero load, the normally open contact of relay disconnects, thereby face shield and face shield working power are disconnected, make brake sack under returning spring (16) effect, rotate 90 °, as the shutter rapid closing.Shut-in time is about 0.01 second, can be ahead of arc light (the general striking time is 0.2～0.3 second).When welding rod and weldment disengaging, the output end voltage of welding machine raises, the normally open contact closure of relay, face shield and face shield working power are connected, brake sack drives turning down at motor (6) and opens for 90 °, and the time is about 1.5 seconds, and travel switch (9) is used to control the brake sack opening angle.Electric magnet (8) and clutch (7) make motor when brake sack cuts out and lower drive shaft break away from, the load when reducing to close is closed rapidly realizing.
Fig. 2 is a venetian blind type electric welder's helmet main part structural representation.Wherein, returning spring support (17), drive shaft mount (18), binding post (19), deceleration pedestal (20), ratio wheel (21), barrier sheet (22), deboost axle (23), quiet clutch-plate (24), clutch spring (25), moving clutch-plate (26), clutch claw (27), brake sack pedestal (28), shading bobbin (29), transmission bar (30), transmission bar support (31), mask shell (32) are as shown.
Quiet clutch-plate (24) is fixed together with lower drive shaft (10), and moving clutch-plate can be free to slide on lower drive shaft and rotate.Between moving clutch-plate and quiet clutch-plate clutch spring (25) is housed.When electric magnet (8) is switched on, can spur clutch claw (27) make clutch-plate and quiet clutch-plate near, two clutch-plates can rotate together by friction; When electric magnet cut off the power supply, two clutch-plates separately.The deceleration pedestal is used for fixing deboost axle, and drive shaft mount is used for fixing upper and lower power transmission shaft.Returning spring (16) one ends are fixed on the power transmission shaft, and the other end is fixed on the returning spring support (17).Big frictional resistance is arranged between friction plate (22) and ratio wheel (21), prevent ratio wheel counter-rotating when the motor stall.
Fig. 3 is brake sack rotary principle figure.(33) be base plate.Brake sack (14) is fixed on the shading bobbin with drive link (13) angle at 45, and shading bobbin (29) can rotate in the axis hole on the brake sack pedestal (28).Drive link (13) is inserted in the aperture on the transmission bar (30), can be free to slide.When the transmission bar is pulled when doing rectilinear motion, drive link can be converted into this rectilinear motion the rotation of shading bobbin.Rotate thereby drive brake sack, realize opening and closing.
Sketch map when Fig. 4 is in opening for shading mirror.
Sketch map when Fig. 5 is in closed condition for shading mirror.
When welding rod (2) and weldment (3) when contacting, the face shield energising, electric magnet (8) adhesive, pulling clutch claw (27) make clutch-plate (26) and quiet clutch-plate (24) near, two clutch-plates are linked together, and motor (6) drives moving clutch-plate by ratio wheel (21) and rotates, and quiet clutch-plate and lower drive shaft (10) also and then rotate, traction transmission bar (30) moves downward, and shading mirror is opened.Simultaneously deformation takes place in returning spring (16), and storage of potential energy is till the transmission bar is run into travel switch (9) and made the motor stall.This moment, electric magnet was still switched on, and two clutch-plates keep static under friction plate (30) effect, thereby brake sack stays open state; When welding rod and weldment disengage, face shield outage, electric magnet releasing clutch pawl, two clutch-plates separate under clutch spring (25) effect, and returning spring recovers deformation, discharge potential energy, power transmission shaft (15) is rotated, and traction transmission bar moves upward, and closes shading mirror rapidly.
Claims (4)
1: a kind of welding operator's face shield, form by venetian blind type shading mirror, signal adapter and control system.It is characterized in that it has a venetian blind type shading mirror of being made up of group leader's bar shaped brake sack (14).Brake sack can be made same angular turn simultaneously in 90 °, open and closure as shutter.
2: device according to claim 1 is characterized in that it has an energy welding terminal change in voltage to be converted to the relay (4) of the shading of automatic control face shield, printing opacity signal.
3: device according to claim 1 is characterized in that it has a motor (6) to cooperate with the clutch (7) of electric magnet (8) control, opens shading mirror, and has a returning spring (16) and the clutch engagement of magnet control to close shading mirror.
4: device according to claim 1 is characterized in that each brake sack (14) in the venetian blind type shading mirror all is fixed on the shading bobbin (29) at two ends.Drive link (13) is housed on the shading bobbin, can rotates, realize the unlatching and the closure of shading mirror by transmission bar (30) control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107068 CN1177470A (en) | 1997-08-11 | 1997-08-11 | Shutter type automatic protecting mask for electric welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107068 CN1177470A (en) | 1997-08-11 | 1997-08-11 | Shutter type automatic protecting mask for electric welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1177470A true CN1177470A (en) | 1998-04-01 |
Family
ID=5169257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97107068 Pending CN1177470A (en) | 1997-08-11 | 1997-08-11 | Shutter type automatic protecting mask for electric welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1177470A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105769439A (en) * | 2016-03-01 | 2016-07-20 | 宁波吉欧光电科技有限公司 | Novel protection face screen |
-
1997
- 1997-08-11 CN CN 97107068 patent/CN1177470A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105769439A (en) * | 2016-03-01 | 2016-07-20 | 宁波吉欧光电科技有限公司 | Novel protection face screen |
| CN105769439B (en) * | 2016-03-01 | 2018-05-08 | 宁波吉欧光电科技有限公司 | A kind of novel protective face |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |