CN2226342Y - Shaper for shadow-mask of colour kinescope - Google Patents
Shaper for shadow-mask of colour kinescope Download PDFInfo
- Publication number
- CN2226342Y CN2226342Y CN 95221710 CN95221710U CN2226342Y CN 2226342 Y CN2226342 Y CN 2226342Y CN 95221710 CN95221710 CN 95221710 CN 95221710 U CN95221710 U CN 95221710U CN 2226342 Y CN2226342 Y CN 2226342Y
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- air vent
- vent hole
- hole
- shaped device
- shadow mask
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Abstract
The utility model provides an improved shadow-mask forming device for a color kinescope, which is characterized in that a vent hole 43 at a lower mould 3 is provided with a structure that the cross section of an upper end is greater than the cross section of a lower end. When the existing forming device uses wash-free stamping oil, the shadow mask can have dark spots resulting from the carbonization of the concentrated adhesive waste oil and the dark spots are not easy to eliminate to result in the plug-hole accident of the shadow mask. The utility model can use the wash-free stamping oil to replace the use of lotions with fluorine, chlorine and hydrocarbon to protect environment.
Description
The utility model relates to the shaped device of chromoscope, more specifically, relates to the improvement of the shaped device of shadow mask in colour picture tube.
The shaped device of present shadow mask in colour picture tube as shown in Figure 1, wherein 1 is patrix, is made up of limit mould 11 and core 12,2 is processed shadow mask, 3 is counterdie.When patrix integral body presses down, at first by limit mould 11 with shadow mask 2 plates at the edge of counterdie 3 shoulder part extrusion molding, core 12 continues to press down then, shadow mask plate core is pressed to the counterdie core and last the shaping.For making former air between upper and lower mould have path to be drained, establish steam vent 4 in both sides, counterdie center, air passed back in the mould when this hole also supplied molding, and it is rapid to be beneficial to molding, boosts productivity.In molding procedure, should scribble punching press (moulding) oil on the shadow mask face, use solvent with its flush away remaining oil after the shadow mask moulding.As this kind lotion; trichloroethylene for example; be fluorine, chlorine, hydrocarbon compound; requirement to the environmental protection aspect in recent years improves constantly; the timetable of existing in the world this compounds of forbidding; in order to avoid atmosphere pollution has needed to substitute the former punching oil of using with water system lotion free from environmental pollution or non-washing type high volatile volatile moulding punching oil now, in the operation of back, remove then with the volatilization way of heating.But found producing blackspot on the shadow mask face near the air vent hole, and be difficult for removing, caused the shadow mask blocked hole accident, influenced the shadow mask quality, percent defective rises.Blackspot is to occur because air vent hole exists, even reduce the punching oil use amount, the blackspot problem still can not solve, and causes the non-washing type punching oil not import, and becomes a vital problem points so eliminate blackspot.
The purpose of this utility model provides a kind of shaped device of improved shadow mask in colour picture tube, has both allowed to import the non-washing type punching oil, keeps air vent hole again so that keep high productivity ratio, but can not form blackspot on shadow mask.
Studies show that through inventor etc., return air flows at a high speed from air vent hole in the mold process that patrix promotes, owing to be continuous operations, employed punching oil has remain in ventilation on the hole wall, these outmoded waste oil are dashed by the air that refluxes and invest shadow mask, heating afterwards, it is rotten to be carbonized in the volatilization process, can't remove with simple method, thereby cause above-mentioned blackspot.Therefore must have adequate measures to avoid adhering to of described waste oil, this adhering to of particularly relative with air vent hole position is particularly to concentrate part.In view of described problem is to cause because of the wind speed of return air is higher, the speed that reduces return air can make problem achieve a solution.Reduce the patrix hoisting velocity and no doubt can reach this purpose, but this will prolong the activity duration, and reduce economy and production efficiency, be worthless.
The solution of the novel proposition of this reality is that end section under the air vent hole is reduced, and the upper end promptly leans on the cross section of this end of shadow mask to enlarge under the prerequisite that does not influence shadow mask moulding curvature, goes up the air vent hole of end section greater than following end section thereby form.The described end section circular hole of going up directly is not less than down the end section circular hole directly four times the time, and better effect is arranged.
The described air vent hole of going up end section greater than following end section can be that the step through hole of one-level is at least arranged; Or the taper hole of big up and small down inverted tubaeform; Or cylindrical air vent hole bottom adds the stopper that central through hole is arranged.
Can add a damping fin in described up big and down small air vent hole upper end hole, this damping fin has a plurality of breach for embedding the disk in the air vent hole upper end hole on excircle.The existence of damping fin will further make the exit flow that has slowed down spread to peripheral direction from the edge in hole, more effectively avoid waste oil to concentrate and adhere to, and also will more effectively avoid blackspot to form.
Use the utility model shaped device, allow to import disposable punching oil, do not concentrate and be attached to shadow mask, do not form blackspot afterwards in the operation on the shadow mask, guaranteed the shadow mask Forming Quality but waste oil does not take place.
Fig. 1 is existing shadow mask in colour picture tube shaped device structure chart.
Fig. 2 is the structure chart of the utility model shadow mask in colour picture tube shaped device first embodiment.
Fig. 3 is the structure chart of the utility model shadow mask in colour picture tube shaped device second embodiment.
Fig. 4 is the structure chart of the utility model shadow mask in colour picture tube shaped device the 3rd embodiment.
Fig. 5 is the structure chart of the utility model shadow mask in colour picture tube shaped device the 4th embodiment.
Fig. 6 is the structure chart of an example of damping fin described in the 4th embodiment.
Be described in detail each embodiment of the present utility model below with reference to accompanying drawing.Same parts will give identical label in each example.
Fig. 2 is the first example structure figure of the utility model shadow mask in colour picture tube shaped device.Wherein counterdie 3 upper vent holes 4 are the cylindrical of φ 14, the long 22mm in hole, and the stopper 41 of high 10mm is filled in its middle and lower part, and described stopper 41 has φ 3 central through holes.This routine shaped device is used for moulding 538mm * 398mm, material is the shadow mask of Invar steel, use high volatile volatile high temperature punching oil, this kind punching oil does not use solvent clean, promptly can be disposable, the volatilization of heating in the operation in the back, the air vent hole of this spline structure can guarantee good shadow mask Forming Quality, does not have maimed oil to concentrate to adhere to carbonization and forms blackspot, and the hole of stopper 41 can not stopped up yet.
This routine structure counterdie is easy to process, also is convenient to transform existing mould.
Fig. 3 represents the structure chart of second embodiment, and it is the distortion of first embodiment, and changing unit is that described air vent hole is up big and down small inverted tubaeform taper hole 43, though the air vent hole shape changes the effect that equally obtains.
Fig. 4 represents the structure chart of the 3rd embodiment, it is the another distortion of first embodiment, the air vent hole change of shape is the through hole 44 that the one-level step is arranged, the thick 22mm of counterdie, aperture φ 20mm tops bar, dark 12mm, " the shadow mask moulding of chromoscope does not influence the formation of its curved surface, and the air vent hole hypomere is the clear opening of φ 4 to be used in 29.The number of steps of described air vent hole 44 can be looked concrete condition and be gone to select by the present embodiment design by the structural design engineer easily more than one-level, and the air vent hole of multistage step aperture from top to bottom reduces step by step.
Fig. 5 is the 4th embodiment, and it is another distortion of first embodiment.Add damping fin 42 in the upper end hole of the described air vent hole of first embodiment, described damping fin 42 is discoideus thin slice, and at least one breach is arranged on excircle, four arc notch 45 is arranged, referring to Fig. 6 on the damping fin excircle in this example.Described breach can be any other shape.In addition, described damping fin also can add in the hole that is located at second and third embodiment air vent hole upper end, can obtain the diffusion return air equally, further produces the effect of step-down reduction of speed.
The utility model illustrates with embodiment, but is not limited in embodiment, and those skilled in the art can make change to concrete scheme by the disclosed design of the utility model, and this change is also within essence of the present utility model and spiritual scope.
Claims (7)
1. the shaped device of a shadow mask in colour picture tube has upper die and lower die and is located at air vent hole on the counterdie, it is characterized in that in the face of the cross section greater than the air vent hole lower end at place, counterdie bottom surface, the cross section of the air vent hole upper end of described patrix.
2. according to the shaped device of claim 1, it is characterized in that described air vent hole is cylindrical, the Lower Half in hole is established stopper, and there is through hole at described stopper center.
3. according to the shaped device of claim 1, it is characterized in that described air vent hole is up big and down small inverted tubaeform taper hole.
4. according to the shaped device of claim 1, it is characterized in that described air vent hole is that the stepped hole of one-level step is at least arranged, the aperture reduces step by step from top to bottom.
5. according to any shaped device in the claim 1 to 4, it is characterized in that adding damping fin in described air vent hole upper end hole, described damping fin is a plectane thin slice, is provided with at least one breach on its periphery.
6. according to the shaped device of claim 5, it is characterized in that described breach is four arc notch.
7. according to any shaped device in the claim 1 to 4, the aperture that it is characterized in that described air vent hole upper end is not less than four times of aperture, lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95221710 CN2226342Y (en) | 1995-09-14 | 1995-09-14 | Shaper for shadow-mask of colour kinescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95221710 CN2226342Y (en) | 1995-09-14 | 1995-09-14 | Shaper for shadow-mask of colour kinescope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2226342Y true CN2226342Y (en) | 1996-05-01 |
Family
ID=33869259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95221710 Expired - Fee Related CN2226342Y (en) | 1995-09-14 | 1995-09-14 | Shaper for shadow-mask of colour kinescope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2226342Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331181C (en) * | 2001-05-30 | 2007-08-08 | 松下电器产业株式会社 | Method of manufacturing gas discharge display panel, support table, and method of manufacturing support table |
-
1995
- 1995-09-14 CN CN 95221710 patent/CN2226342Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331181C (en) * | 2001-05-30 | 2007-08-08 | 松下电器产业株式会社 | Method of manufacturing gas discharge display panel, support table, and method of manufacturing support table |
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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 |