CN1020524C - Welding device for cathode of electron gun of cathode ray tube - Google Patents
Welding device for cathode of electron gun of cathode ray tube Download PDFInfo
- Publication number
- CN1020524C CN1020524C CN90100449A CN90100449A CN1020524C CN 1020524 C CN1020524 C CN 1020524C CN 90100449 A CN90100449 A CN 90100449A CN 90100449 A CN90100449 A CN 90100449A CN 1020524 C CN1020524 C CN 1020524C
- Authority
- CN
- China
- Prior art keywords
- cathode
- slide block
- mentioned
- negative electrode
- supporting
- 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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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/18—Assembling together the component parts of electrode systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/18—Assembling together the component parts of the discharge tube
- H01J2209/185—Machines therefor, e.g. electron gun assembling devices
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Resistance Welding (AREA)
- Microwave Tubes (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
The present invention relates to a cathode ray tube electron gun cathode welding device, which comprises a pair of supporting seats arranged on a bottom plate, a guide rod arranged between the two supporting seats, a slide block sliding along the guide rod and provided with a fixing rod used for supporting an electrode component, an air cylinder used for generating a driving force on the slide block, and a supporting block homocentrically arranged with the fixing rod and used for supporting the cathode. The present invention is characterized in that a combination limiting device is arranged between a supporting seat and the slide block for providing a resilience, the resilience is slightly weaker than the driving force of the air cylinder, but the directions of the resilience and the driving force are opposite. The neutralization, the distortion and the combination between the cathode and the electrode component can be avoided according to the present invention, therefore helpful for improving the product quality.
Description
The present invention relates to the welder that cathode of CRT electron gun is used, specifically, relate to a kind of negative electrode is inserted and also welded the cathode welding equipment of usefulness in the electrode assemblie.
The negative electrode of electron gun generally all inserts in the stay pipe of electrode assemblie, and a plurality of electrodes are fixed on the bead in stay pipe, to form overall structure, uses the welding method fixed negative pole then.A kind of so common cathode welding equipment that is used for above-mentioned purpose is shown in Fig. 1.
Referring to this figure, the pole 9 of the fixed lever 8 of supporting electrode assembly M and support negative electrode K is arranged to such an extent that make them do relative motion along same axis, and the periphery that a plurality of movable welding electrode is arranged in pole 9.
Can do relative motion in order to make between fixed lever 8 and the pole 9, fixed lever 8 is installed in to be supported on the piece 7, and supports that piece is fixed on the slide block 4, slide block then along be installed in two bearings 2 and 2 ' between guide rod 3 slide.Bearing is fixed on the base plate 1.Slide block 4 engages with the front end of piston rod 6a, and piston is inserted in the cylinder 6, thereby slide block 4 can be moved, thousand separately 5 be installed in bearing 2 ' on so that be used for adjusting the stroke of slide block 4.The axle of thousand parted hairs 5 is adjusted piece 4a and is installed on the slide block 4 as block 5a, makes it to face toward in the opposite direction the axle of thousand parted hairs 5, thereby can play the fine setting effect to stroke.
In a kind of so common cathode welding equipment, electrode assemblie is supported on the fixed lever 8, and cathode branch is held on the pole 9.Like this, the action if cylinder 6 is brought about the desired sensation, will promote slide block 4 moves forward along guide rod 3, till its adjustment piece 4a touches block 5a, the result is shown in Fig. 1 amplifier section, negative electrode K just inserts in the stay pipe S of electrode assemblie, relends to help movable welding electrode 10 spot-welded together the sleeve pipe of stay pipe S and negative electrode, thereby negative electrode K is fixed.
But in this common negative electrode welder, even the axis misalignment of the stay pipe S of electrode assemblie M and negative electrode K, cylinder 6 also can insert negative electrode firmly, therefore the stay pipe S of electrode assemblie M and negative electrode K is deformed, and causes substandard products.
In addition, even negative electrode K did not deform when inserting stay pipe S, the center still may misalignment.In this case, the defective naked eyes that this center line does not overlap be can't see, thereby have to be provided with an independent inspection operation and find it, and the result consumes a large amount of manpowers and expense, thereby make existing method be unsuitable for large-scale production.
Therefore, the purpose of this invention is to provide a kind of welder of cathode of CRT electron gun, if the center line misalignment of electrode assemblie and negative electrode, this device just can detect, thereby stops the insertion and the welding of negative electrode.
In order to achieve the above object, the cathode welding equipment that proposes of the present invention comprises and a pair ofly is fixedly mounted in bearing on the base plate, is installed in guide rod between this two bearing, slides and have the slide block of the fixed lever that a supporting electrode assembly uses, power passed to cylinder and a support piece that is used for supporting negative electrode of installing with one heart with fixed lever of slide block along guide rod.
Its feature is, is equipped with one and engages restraint device between a bearing and slide block, so that an elastic force is provided, its direction is opposite with the driving force of cylinder, and value is then less.
With reference to accompanying drawing, after most preferred embodiment of the present invention illustrated in detail, it is more obvious that above-mentioned purpose of the present invention and advantage will become.
Fig. 1 is the front view that the part of conventional cathode welder is amplified;
Fig. 2 is the cathode welding equipment perspective view that the present invention proposes, and part is amplified;
Fig. 3 is that Fig. 2 engages the restraint device amplification profile;
Fig. 4 A is the front view that amplifies by the part of cathode welding equipment of the present invention state of living in before action;
Fig. 4 B is the part amplification front elevation by cathode welding equipment of the present invention state of living in behind work.
The key component of the cathode welding equipment that the present invention proposes is shown in Fig. 2, and its total also will further be illustrated in Fig. 4 A and 4B.The cathode welding equipment that the present invention proposes be equipped with supporting electrode assembly M fixed lever 8, be installed on the slide block 4 support piece 7(slide block 4 along be contained in two bearings 2 and 2 ' between guide rod 3 slide, and bearing 2,2 ' be fixed on the base plate 1) and the support piece 9 of installing and support negative electrode K with fixed lever 8 with one heart.
Slide block 4 moves along with the front end that the cylinder 6 piston rod 6a on the base plate 1 are installed, thousand 5 strokes that are used for adjusting slide block 4 separately, thousand separately 5 plug as block, be installed in bearing 2 ' on, and it is relative with block 5a that adjustment piece 4a is installed on slide block 4.
Above-mentioned cathode welding equipment is similar to common cathode welding equipment, but the cathode welding equipment that the present invention proposes has installed additional in conjunction with restraint device 20.
As shown in Figure 3, preferably include hollow cylinder 21, outer boom 22, spring 23 and adjusting lever 24 in conjunction with restraint device.Hollow cylinder 21 has external thread section 21a, through hole 21b and along one section of hollow cylinder, the internal thread segment 21c that inner surface forms; Overhanging excellent 22 are stretched out by through hole 21b, and its another part is contained in the interior space of cylinder 21; The external boom 22 of spring 23 usefulness directions tomorrow produces a flexible bias pressure; Adjusting lever 24 has knob 24a, and its external thread section 24b combines with the internal thread 21c of cylinder 21, is used for adjusting the elastic force of spring 23.
In conjunction with restraint device by this way with bearing 2 ' combine, that is, screwed hole 2a admits external thread section 21a, preferably combination by this way in addition, that is, the front end of extension bar 22 should contact with the adjustment piece 4a ' that is installed in slide block 4 tops.
In conjunction with the elastic force of restraint device, also be that the elastic force of spring 23 designs to such an extent that make it be slightly less than the driving force of cylinder 6, about this point, also can illustrate in detail later on.
In other words, the driving force of cylinder 6 generally designs to such an extent that insert electrode assemblie M greater than the frictional force between slide block 4 and the guide rod 3 with negative electrode K and the summation of the frictional force that produces.Can make the frictional force between slide block 4 and the guide rod 3 become very little by lubricated, therefore almost can ignore.
But if the center misalignment of electrode assemblie M and negative electrode K, the frictional force between them will obviously increase.Therefore, if the elastic force in conjunction with restraint device 20 design equal cylinder 6 borrow power and be equivalent to electrode assemblie M and negative electrode K between frictional force poor of nonconcentricity franchise, so, run into the center misalignment, thereby when surpassing the centering franchise, cylinder 6 is with regard to akinesia.
When running into this situation, electrode assemblie M and negative electrode K just can not in conjunction with, in this case, preferably cause that by suitable warning device the workman notes, or load onto and pick up device automatically.
The cathode welding equipment that the present invention proposes illustrates its operating process referring now to Fig. 4 A and 4B as mentioned above.
At first, shown in Fig. 4 A, suppose that electrode assemblie M has been contained on the fixed lever 8, negative electrode has been contained in to be supported on the piece 9.At this moment best adjusted thousand separately 5 makes it to produce suitable stroke, and adjust spiral 24 and make in conjunction with restraint device 20 and produce suitable elastic force, and the front end of the outer boom 22 adjustment piece 4a ' of contact slipper 4.
Like this, when cylinder 6 is brought about the desired sensation when action by suitable control device, slide block 4 and dress fixed lever 8 thereon moves towards cathode direction, and electrode assemblie 8 is supported on the fixed lever 8, so negative electrode K should insert among the stay pipe S of electrode assemblie M.
Under this condition, if the nonconcentricity between electrode assemblie M and the negative electrode K is no more than franchise, in other words, the driving force of cylinder 6 is greater than the summation in conjunction with frictional force between the elastic force of restraint device 20 and electrode assemblie M and the negative electrode K.Therefore, shown in Fig. 4 B, just negative electrode K inserts within the stay pipe S of electrode assemblie M, and weld, thereby finish combination by float electrode 10.
On the other hand, if the nonconcentricity of electrode assemblie M and negative electrode K greater than franchise, that just means the frictional force between electrode assemblie M and the negative electrode K and becomes greater than the driving force of cylinder 6 in conjunction with the elastic force sum of restraint device 20.Therefore, negative electrode K inserts the action of electrode assemblie M and is obstructed, and sends warning, perhaps automatically negative electrode is taken away.
Like this, if the nonconcentricity of electrode assemblie M and negative electrode K exceeds franchise, welding just can not be carried out, and negative electrode K will be thrown aside or be reclaimed.
According to the present invention, the cylinder driving force should design very for a short time with the difference that combines restraint device elastic force, makes that the nonconcentricity of electrode assemblie and negative electrode just can be measured above franchise, thereby prevents combination.
So the cathode welding equipment that the present invention proposes can prevent center misalignment and distortion combination, thereby helps to improve the quality of products.In addition, needn't establish the defective product of operation sorting more in addition, thereby help to boost productivity.
Claims (1)
1, a kind of welder that is used for cathode of CRT electron gun, it comprises: a pair of bearing that is installed on the base plate, a guide rod that is installed between the above-mentioned a pair of bearing, one by above-mentioned guide rod guiding and the slide block of the fixed lever that the supporting electrode assembly uses is housed, one provides the cylinder of driving force and the support piece of installing with one heart with this fixed lever that is used for supporting negative electrode for this slide block, it is characterized in that: between one of this two bearing and above-mentioned slide block, the coupling restraint device is housed, be used to provide elastic force, this elastic force is slightly less than the driving force of this cylinder, but direction is opposite, the elastic force of wherein said coupling restraint device is equivalent to the poor of the driving force of above-mentioned cylinder and the frictional force between above-mentioned electrode assemblie and this negative electrode, nonconcentricity between above-mentioned electrode assemblie and the above-mentioned negative electrode is within franchise, and described coupling restraint device comprises: a hollow cylinder, an outer boom that stretches out from the through hole of this hollow cylinder one end, usefulness so that should outer boom in one direction the spring of elastic biasing and one in order to regulate the adjustment screw of above-mentioned spring force.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890007826U KR910005841Y1 (en) | 1989-06-05 | 1989-06-05 | Welding equipment of a cathode of electron gun |
| KR7826/89 | 1989-06-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047935A CN1047935A (en) | 1990-12-19 |
| CN1020524C true CN1020524C (en) | 1993-05-05 |
Family
ID=19286878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90100449A Expired - Fee Related CN1020524C (en) | 1989-06-05 | 1990-01-24 | Welding device for cathode of electron gun of cathode ray tube |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR910005841Y1 (en) |
| CN (1) | CN1020524C (en) |
| MY (1) | MY105193A (en) |
-
1989
- 1989-06-05 KR KR2019890007826U patent/KR910005841Y1/en not_active IP Right Cessation
-
1990
- 1990-01-19 MY MYPI90000097A patent/MY105193A/en unknown
- 1990-01-24 CN CN90100449A patent/CN1020524C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR910001563U (en) | 1991-01-24 |
| MY105193A (en) | 1994-08-30 |
| KR910005841Y1 (en) | 1991-08-05 |
| CN1047935A (en) | 1990-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| 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 |