CN1237569C - Inner electrode and manufacturing method of inner electrode of electron gun for CRT - Google Patents
Inner electrode and manufacturing method of inner electrode of electron gun for CRT Download PDFInfo
- Publication number
- CN1237569C CN1237569C CNB981156797A CN98115679A CN1237569C CN 1237569 C CN1237569 C CN 1237569C CN B981156797 A CNB981156797 A CN B981156797A CN 98115679 A CN98115679 A CN 98115679A CN 1237569 C CN1237569 C CN 1237569C
- Authority
- CN
- China
- Prior art keywords
- electrode
- hole
- electron beam
- enclosure portion
- crt
- 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
Links
Images
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Electron Sources, Ion Sources (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A method for producing internal electrode for CRT used electronic gun comprises a blanking step of cutting strip type materials into squares with curved corners; a drawing step of forming each of the cut materials into a cup having a closed portion(, an open portion, and an outer peripheral surface; a pre-piercing step of forming through holes at positions corresponding to centers of beam passing holes to be formed at the closed portion of the cup; an embossing step of recessing part of the closed portion of the cup corresponding to the positions where the beam passing holes are to be formed, into cylindrical shapes toward the open portion of the cup; and a piercing step of forming beam passing holes by removing bottoms of the recesses formed by the embossing step. In this way, the materials consumption can be reduced greatly and product precision can be improved.
Description
Technical field
The present invention relates to the interior electrode and the manufacture method thereof of cathode ray tube (CRT) electron gun, specifically, relate to available than the method for electrode and the interior electrode of production thereof in the manufacturing CRT electron gun of short production cycle and less quantity of material.
Background technology
Usually, CRT comprises a panel and connected funnel part, and the inboard of panel is formed with the face.Electron gun is contained in the neck of funnel.Electron gun sends the electron beam corresponding to red, green, blue three looks, and the face of electron beam scanning panel demonstrates predetermined video.
Fig. 1 illustrates each electrode of common electron gun and the voltage that is applied thereto.Referring to this figure, electron gun comprises that negative electrode 2, the control utmost point 3 and the screen electrode 4, first, second, third and the 4th focusing electrode 5,6,7 and 8 that form three utmost points have formed a main lens system, and last accelerating electrode 9 is installed in the face of the 4th focusing electrode 8.Wherein, 2 one-tenth in-lines of three negative electrodes are arranged, and respectively have three wire electron beam through- holes.Device 7a, 7h, 8a and the 8h that forms quadrupole lens is contained in the 3rd, the 4th focusing electrode 7 that faces with each other and 8 surface.
Add predetermined fixed voltage VS on the screen electrode 4 and second focusing electrode 6, add the focus voltage VF that is higher than fixed voltage VS on the first and the 3rd focusing electrode 5 and 7.Add dynamic focus voltage VD on the 4th focusing electrode 8, and add the anode voltage VA that is higher than above-mentioned each voltage on the last accelerating electrode 9.
In the conventional electrical rifle of the color CRT with said structure, the 4th focusing electrode 8 and last accelerating electrode 9 respectively are made up of an interior electrode and an external electrode.Just as shown in the figure, the 4th focusing electrode 8 comprise the external electrode 8a that focuses on the left side that electrode 7 is connected with the 3rd, the external electrode 8b on the right side that is connected with left side external electrode 8a and be contained in interior electrode 8c inside the external electrode 8b of right side.And last accelerating electrode 9 comprises external electrode 9a and dress interior electrode 9b within it.
Electrode with above-mentioned inside and outside electrode with an advanced mould to strip material carry out in succession die-cut, draw, trimming and making.The landing position of electron beam particularly, in making, in the electrode process, requires to have the strict process management, because can change owing to the little deviation of the position that is contained in interior interior electrode 8c of external electrode 8b and 9a and 9b respectively.Just, if three wire electron beam through-holes are precisely defined in the interior electrode, then the landing position of electron beam is along with the relative installation of interior electrode 8c or 9b and external electrode 8b or 9a changes.
Fig. 2 illustrates an electrode of the electron gun with above-mentioned interior electrode and external electrode.Referring to this figure, interior electrode is to install by being inserted in the space in the external electrode 21, and the outer peripheral face 24 of interior electrode 22 contacts with the inner peripheral surface 25 of external electrode 21, and the shape and size of the two should be corresponding.If the shape and size of two electrodes do not meet, then the position of electron beam through-hole 23 will change, then electron beam can not be accurate screen.
Fig. 3 A to 3G is used to illustrate the method for making interior electrode by prior art.
3A with the aid of pictures of elder generation and 3B.As the material of interior electrode is the bar shaped of bar 31, bar 31 is carried out die-cut, to cut out circle 32 (seeing Fig. 3 B).Bar 31 be should be taken into account the size of the circle of making in the die-cut process, and just the width of bar 31 should be greater than the diameter of the circle 32 that punches out.
Referring to Fig. 3 c.The material of the circle 32 that punches out is drawn into the shape of basin 33.Get material, utilize the mould of reservation shape to draw with good ductility.In the practice, be to utilize different moulds to divide first and second liang of steps to draw, to realize meticulous drawing process.So this material finally forms a basin 33 with opening portion 33a and enclosure portion 33b, and is formed with a chimb 34 on the edge of the opening portion 33a of basin 33.
Fig. 3 D illustrates the basin of finishing behind the renovation process 33.In renovation process, remove the chimb 34 of basin 33 with a stamping tool.Because this renovation process can form burr on the outer peripheral face of interior electrode, therefore in carrying out renovation process, also must carry out high-precision processing.
Fig. 3 E illustrates the basin of finishing after the pre-punched hole technology 33.Pre-punched hole technology is equivalent to form the preparation technology of electron beam through-hole.In the pre-punched hole process, go out the hole with a perforating press in zone corresponding to the electron beam through-hole center, enclosure portion 33b place of basin 33.As shown in the figure, by pre-punched hole technology, made three holes 36, these three holes are corresponding to the center of electron beam through-hole in the interior electrode that forms later on.
The basin 33 that Fig. 3 F illustrates grooving technology after finishing.Grooving technology make enclosure portion 33b in the predetermined radii scope that is the center of circle with above-mentioned center of breaking through the hole 36 that forms in the journey in advance to opening portion 33a projection.After indentation process is finished, form three recesses 37 at the enclosure portion 33b place of basin 33, as shown in the figure, hole 36 then is in the bottom of recess 37.The perisporium that forms in the recess 37 becomes the perisporium of electron beam through-hole in the interior electrode of finally finishing.In the practice, the indentation process branch carries out for three times, and therefore the recess 37 that forms has the accurate diameter and the degree of depth.
The basin 33 that Fig. 3 G illustrates punching technology after finishing.In punch process, punching is carried out in the whole bottom surface of recess 37 with stamping tool.That is, different with the pre-punched hole technology that forms hole 36 in recess 37 centers shown in Fig. 3 E, in the punching technology shown in Fig. 3 G, to the punching of whole bottom surface, thus make have through hole 36 ' electron beam through-hole 38 and its perisporium.
The interior electrode of making by above-mentioned technical process carries out burring in last technology.In burring technology, the outer peripheral face 39 of electrode in handling with a mould is so that be engaged in it on inner peripheral surface of external electrode.In the practice, the burring process is carried out three times, comprises reverse burring technology.
But the said method of making interior electrode by existing technology has following shortcoming:
The first, compare with the material therefor amount, wasted lot of materials.As shown in Figure 3A, because bar material is gone out circle 32, lost all remaining materials, therefore total materials amount has increased.
The second, comprised a unnecessary technical process.Because strip material is gone out a circle, so the renovation process shown in Fig. 3 D needs.If what material will be gone out is the difformity that does not produce chimb 34, then renovation process can omit.
The 3rd, the machining accuracy of interior electrode outer peripheral face may reduce.Owing to formed chimb 34 and renovation process arranged, therefore reduced precision.Just, when chimb in the renovation process was not removed fully, burr can appear in side cut place, and this burr even in subsequent technique (burring technology) also may be difficult for removing.
Summary of the invention
For addressing the above problem, the objective of the invention is to propose a kind of method of making the interior electrode of electron gun, wherein only use less material.
Another object of the present invention is to propose a kind of method of making the interior electrode of electron gun, wherein manufacturing process can be simplified.
A further object of the present invention is to propose a kind of method of making the interior electrode of electron gun, and this method can improve the precision of product.
Another purpose of the present invention is to provide more than one to state the interior electrode of the electron gun that the method improved makes.
Therefore, be an aspect that achieves the above object, a kind of method of making electrode in the electron gun of using for CRT is provided, this method may further comprise the steps: bar material is provided continuously, it is carried out die-cut, to cut out the material of a pair of relative edge with predetermined curvature and another opposite side parallel in shape; The material that has punched out is drawn into basin shape material, makes it to have opening portion, enclosure portion and outer peripheral face; The center that will form electron beam through-hole in the enclosure portion corresponding to described basin shape material is gone out a hole in advance; On a part of enclosure portion, make a columnar recess towards the opening portion direction of basin shape material corresponding to the described basin shape material that will form the electron beam through-hole position; And in the bottom surface punching of the recess that forms to form electron beam through-hole.
For reaching the object of the invention on the other hand, a kind of interior electrode of the electron gun of using for CRT is provided, electrode comprises in this: the enclosure portion that is formed with the tubular electron beam through hole on it; The opening portion that relative closure partly forms; And extend outer peripheral face between enclosure portion and the opening portion; Wherein the constituent material of interior electrode is to have a pair of relative edge of predetermined curvature and the material of another opposite side parallel in shape.
Description of drawings
Describe a specific embodiment in detail with reference to accompanying drawing, thus can clearer understanding above-mentioned purpose of the present invention and advantage.
Fig. 1 is the cutaway view of general electron gun electrodes, and figure is marked with institute's making alive on each electrode;
Fig. 2 is the perspective view of interior electrode and external electrode;
Fig. 3 A-3G is a schematic diagram, and the method for making interior electrode according to common process is shown;
Fig. 4 A-4F is a schematic diagram, and the method for making interior electrode according to the present invention is shown.
Embodiment
Fig. 4 A to 4F illustrates the method for electrode in the electron gun that manufacturing of the present invention uses for CRT.In Fig. 4 A and 4B, carry out die-cut to the strip material of the interior electrode that provides continuously.As shown in the figure, strip material 41 is die-cut into certain shape, and this shape can not produce chimb in drawing process is after this handled.For example, material 41 can be cut into the material of a pair of relative edge with predetermined curvature and another opposite side parallel in shape.Cutting work is finished in clicking technique with a mould.Therefore, use above-mentioned clicking technique, the quantity of material that is not used in the waste of electrode in making can significantly reduce.
Fig. 4 C is illustrated in the drawing process disposition of the material that reservation shape is arranged 42 that forms in the clicking technique.In drawing process, with a mould materials processing is become the shape of basin, basin shape material 43 has an opening portion 43a, an enclosure portion 43b and an outer peripheral face 44c.In the practice, drawing process is preferably undertaken by the first step and two steps of second step, so that basin shape material 43 precision forms.Different with aforementioned existing basin manufacture method, in drawing process of the present invention, the edge of the opening portion 43a of basin shape material 43 does not go out the such chimb of phenomenon chimb 34 (seeing Fig. 3 C).Therefore, can save renovation process.
The enclosure portion 43b of the basin shape material 43 that Fig. 4 D illustrates pre-punched hole technology after finishing.In pre-punched hole technology, hole 46 is made at the center that will form the electron beam through-hole zone with a stamping tool in interior electrode.As shown in the figure, be formed on three holes 46 that have on the basin shape material 43 enclosure portion 43b.
The basin shape material 43 that Fig. 4 E illustrates grooving technology after finishing.In grooving technology, on the enclosure portion 43b of basin shape material 43, form recess 47.By basin shape material 43 enclosure portion 43b corresponding to the part of electron beam through-hole on form cylindrical recess 47 to opening portion 43a direction compacting.Recess 47 is corresponding to the perisporium of the electron beam through-hole of the interior electrode of finally finishing, and therefore, this recess has predetermined diameter.Then, partly make hole 46 at the pre-punched hole of recess 47 bottom surfaces.This technology can progressively be carried out, to improve the precision in the technical process.
In the basin shape material 43 shown in Fig. 4 F, the break-through fully of the bottom surface of recess 47.In this process, with a stamping tool bottom surface of recess 47 is removed fully, thereby formed a through hole 46 ', this through hole is exactly the electron beam through-hole 48 in the interior electrode of finally finishing.
Then, internally electrode carries out burring technology, and this technology can be divided into several steps, comprises reverse burring technology.In burring technology, the outer peripheral face 44c of electrode is coupled in the inner peripheral surface of external electrode in can making.So the electron beam that passes electron beam through-hole can accurately be mapped on the precalculated position of face.
As mentioned above, in manufacturing electron gun of the present invention in the method for electrode, change a pair of relative edge with predetermined curvature and the material of another opposite side parallel in shape into, can reduce the consumption of material greatly by the material shape that will punch out.For example, compared with prior art, quantity of material can reduce about 45%.In addition, owing to can omit renovation process, therefore can simplify whole technology, thereby reduce production cost.Have, because the burr that forms reduces, craft precision improves again.
Should point out, the invention is not restricted to the foregoing description, obviously, those skilled in the art can make various modifications in the spirit and scope of the invention that appended claims limited.
Claims (2)
1. method of making electrode in the electron gun of using for CRT may further comprise the steps:
Bar material is provided continuously, it is carried out die-cut, to cut out the material of a pair of relative edge with predetermined curvature and another opposite side parallel in shape;
The material that has punched out is drawn into basin shape material, makes it to have opening portion, enclosure portion and outer peripheral face;
The center that will form electron beam through-hole in the enclosure portion corresponding to described basin shape material is gone out a hole in advance;
On a part of enclosure portion, make a columnar recess towards the opening portion direction of basin shape material corresponding to the described basin shape material that will form the electron beam through-hole position; And
In the bottom surface punching of the recess that forms to form electron beam through-hole.
2. the interior electrode of an electron gun of using for CRT comprises: the enclosure portion that is formed with the tubular electron beam through hole on it; The opening portion that relative closure partly forms; And extend outer peripheral face between described enclosure portion and the described opening portion; The constituent material of electrode is to have a pair of relative edge of predetermined curvature and the material of another opposite side parallel in shape in wherein said, and described electron beam through-hole makes the part of described enclosure portion become recess to form.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970031145A KR100449754B1 (en) | 1997-07-04 | 1997-07-04 | Internal electrode fabrication method of electron gun for cathode ray tube and internal electrode fabricated thereof |
| KR31145/97 | 1997-07-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1205537A CN1205537A (en) | 1999-01-20 |
| CN1237569C true CN1237569C (en) | 2006-01-18 |
Family
ID=5224673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981156797A Expired - Fee Related CN1237569C (en) | 1997-07-04 | 1998-07-04 | Inner electrode and manufacturing method of inner electrode of electron gun for CRT |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100449754B1 (en) |
| CN (1) | CN1237569C (en) |
| MY (1) | MY129497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577202B (en) * | 2008-05-09 | 2011-12-07 | 襄樊市宏盛昌电子机械有限责任公司 | Electrode forming process for discharge tube and die designed for implementing same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2904349B2 (en) * | 1988-02-23 | 1999-06-14 | 株式会社東芝 | Electrode processing method for electron gun for cathode ray tube |
| KR100201129B1 (en) * | 1994-11-30 | 1999-06-15 | 김영남 | The manufacturing method of electrode element of electron gun |
| KR19980040901A (en) * | 1996-11-30 | 1998-08-17 | 엄길용 | Electrode gun manufacturing method |
| KR19980040902A (en) * | 1996-11-30 | 1998-08-17 | 엄길용 | Electrode gun manufacturing method |
-
1997
- 1997-07-04 KR KR1019970031145A patent/KR100449754B1/en not_active IP Right Cessation
-
1998
- 1998-07-03 MY MYPI98003032A patent/MY129497A/en unknown
- 1998-07-04 CN CNB981156797A patent/CN1237569C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577202B (en) * | 2008-05-09 | 2011-12-07 | 襄樊市宏盛昌电子机械有限责任公司 | Electrode forming process for discharge tube and die designed for implementing same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1205537A (en) | 1999-01-20 |
| KR100449754B1 (en) | 2004-11-16 |
| MY129497A (en) | 2007-04-30 |
| KR19990008926A (en) | 1999-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102019000039A1 (en) | Method for producing a gasket-forming plate | |
| CN1237569C (en) | Inner electrode and manufacturing method of inner electrode of electron gun for CRT | |
| CN1164447A (en) | Die set for manufacturing heat exchanging fin of heat exchanger | |
| CN100346916C (en) | Composite processing technology of fine injection type hole | |
| SU1648619A1 (en) | Method of making holes in blanks of members | |
| CN214279898U (en) | Vacuum fluorescent display screen integrated electrode | |
| CN1095706C (en) | Method of manufcturing frame of cathod ray tube | |
| KR850001586B1 (en) | Manufacturing process for electrode of electron guns | |
| JPS606299A (en) | Blaking method with progressive feed | |
| JP3282275B2 (en) | Stamping dies for thin plates | |
| CN1058816C (en) | Method for manufacturing a stator of a stepping motor | |
| JPH0796339A (en) | Tapping method | |
| CN215237267U (en) | Adjustable tongue turning device for trial-made parts | |
| CN113066707B (en) | Vacuum fluorescent display screen integrated electrode and manufacturing method thereof | |
| WO1990005378A1 (en) | Process for manufacturing housings for hybrid integrated circuits | |
| JP3090702B2 (en) | Method of manufacturing electrode structure for electron gun | |
| CN219703185U (en) | Same type different-size gasket stamping die | |
| CN1939613A (en) | Stripped thorn hole turnover method, radiator fin therewith and mould thereof | |
| JP3136522B2 (en) | Cathode ray tube electron gun electrode | |
| US20240149324A1 (en) | Method for producing plate piece and punching machine | |
| EP1113480A2 (en) | Electron gun and production method thereof | |
| CN117259575A (en) | Preparation method of double-layer annular stretching piece with side punching | |
| JPH0824972A (en) | Method for working case | |
| CN1063686C (en) | Technology for stamping and then forming cylindrical cam | |
| JPH10229532A (en) | Manufacture of frame for cathode-ray tube |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060118 |