CN1024862C - Cleaning device for sealing portion of panel of color picture tube - Google Patents

Abstract

The present invention relates to a cleaning device for sealing portion of panels of color picture tubes. The present invention is characterized in that at least two upper rollers are nearly installed the same horizontal plane, the upper rollers are separated by a certain distance to make a cleaning tape which is guided by the rollers run on the highest path, and the cleaning tape moves along a path which is approximately horizontal. The functions of the cleaning device are that the damage of the inner area of a phosphorescent layer caused by spilling of water drops is reduced to minimum damage, the cleaning pressure exerted on the part to be cleaned is maintained no matter how the placing position of panels, and meanwhile, the cleaning pressure can be increased or decreased.

Description

Cleaning device for sealing portion of panel of color picture tube

The present invention relates to a kind of washer of sealing portion of panel of color picture tube, particularly relate to a kind of washer that can guarantee the sealing portion of panel of color picture tube that low percent defective, high cleaning efficiency and expendable parts have long-term durability.

The washer of so-called sealing portion of panel of color picture tube is a kind of device apparently, it can dispose phosphorescent material and other dirts that stick on the sealing portion of panel forcefully, this device is to be used for an interstage, is between the operation of the operation of the inner face phosphors coating photosensitiveness slurries of panel and the phosphorescent layer exposure that will make with the phosphorescent slurries.The washer of hermetic unit is the pollution that prevents exposure device behind phosphors coating photosensitiveness slurries when being used for exposing.

In open 83-511 number of Korean Utility Model, introduced a kind of usual washer that is used for the color cathode ray tube hermetic unit.Same or similar shown in wherein disclosed device and Fig. 1.A pressure roller 4a and a pair of deflector roll 1 in order to guide a loop type cleaning tape 5,1 is installed in an inside and a top of cleaning liquid bath 9, and pressure roller 4a is connected the front end of a roller arm 4, and roller arm 4 can be done the swing of certain angular distance by the effect of a pneumatic linear actuator 7 and a compression spring 8.A driven roller 6 is contained in the intermediate altitude place of cleaning tape 5, in order to drive cleaning tape 5 forcefully.

In above-mentioned usual washer, roller arm 4 is subjected to the effect of pneumatic linear actuator 7 and swings, can be pressed on the hermetic unit of panel so that be connected the pressure roller 4a of roller arm 4 front ends, thereby make rubbing action that the cleaning tape 5 of operation can be by cleaning tape 5 the strong cleaning of the hermetic unit 3 of panel ' give.In this device, hermetic unit 3 ' and cleaning tape 5 between pressure produced by the power that is contained in the compression spring 8 between roller arm 4 and the pneumatic linear actuator 7, therefore because the change of positions of panels worries that the compression degree of excursion of compression spring 8 is may not can even.

That is exactly, if the compression degree of excursion of compression spring 8 is different, also just inhomogeneous to the cleaning pressure on the sealing portion of panel that enters so, consequently cleaning pressure deviates from predetermined reference pressure widely, thereby make it can not reach enough cleaning efficiencies, perhaps, if must reach enough cleaning efficiencies, then impel the loss of cleaning tape 5 to accelerate.

The disadvantage of above-mentioned cleaning machine also is: during cleaning operation, because the rubbing action of cleaning, cleaning fluid tends to be splashed into the interior zone of panel, therefore just produces the problem that phosphorescent layer is damaged.As shown in fig. 1, it almost is on the vertical position that roller arm 4 is installed in one together with its pressure roller 4a, so just can do left and swing to the right, and be the slopes that are positioned to an about miter angle near its panel 3.Like this, some zone of panel inner face is in below the pressure roller 4a, therefore makes the easier interior zone of swarming into panel of the cleaning fluid that spills.

In addition, above-mentioned general washer does not have the device of equipment from the too much cleaning fluid of cleaning tape removal, and therefore, this is a structural shortcoming, makes the cleaning fluid that spills can enter the interior zone of panel inevitably.

Therefore, an object of the present invention is to provide a kind of washer that is used for sealing portion of panel of color picture tube, can obtain a uniform cleaning pressure with this washer, and because being splashed into the percent defective that causes and also can preventing of cleaning fluid.

Another object of the present invention provides a kind of washer that is used for sealing portion of panel of color picture tube, and this washer can be boosted productivity, and can reduce the loss of expendable parts.

For achieving the above object, the inventive system comprises: the cleaning liquid bath of a storage cleaning fluid; Article one, run on the cleaning tape that cleans between the enclosure space in liquid bath inside and groove top; One group of roller that is used to guide cleaning tape, with one cleaning tape is contacted and break away from the device of panel sealing envelope part, wherein, in all above-mentioned rollers, having two upper roll at least is separated by a distance being placed on the same horizontal plane, so that by the cleaning tape of roller guiding when running on the highest plane, can be basically move along the route of level, also have, at least one upper roll is installed to such an extent that can move up and down, can be from following hermetic unit with vertical direction contact and disengaging panel to cause the cleaning tape that is subjected to its guiding.

Above said purpose of the present invention and other advantages will be by most preferred embodiment of the present invention be explained in detail in conjunction with the accompanying drawings and more obvious, accompanying drawing comprises:

Fig. 1 is that the part that is used for the usual washer of colour cathode ray tube hermetic unit is dissectd diagrammatic side views;

Fig. 2 is most preferred embodiment according to the present invention, and the part that is used for colour cathode ray tube hermetic unit washer is dissectd diagrammatic side views;

Fig. 3 is the front view of washer among Fig. 2;

Fig. 4 is the dorsal view of washer among Fig. 2.

As shown in Figure 2, a crossbeam 21 extends from first pillar 20 towards the one side, front end at crossbeam 21 is equipped with a roller sub-assembly 10, is used to guide a cleaning tape 40, and this cleaning tape cleans the inside of liquid bath 50 and the enclosure space operation above cleaning liquid bath 50 via one.

Roller sub-assembly 10 comprises several roller 11,12,13,14,15 and pair of side plates 16, is used for being supported these rollers and being fixed by its opposite side.Two upper roll 14,15 are contained on the plane of an almost horizontal, and middle interval is with certain short distance, and lower rollers 13 has bigger diameter, is placed in such position, and its latter half is immersed in the cleaning fluid that cleans liquid bath 50.Driven roller 11 and the intermediate calender rolls 12 that is configured in 11 liang of offsides of driven roller are equipped with in intermediate altitude place between above-mentioned two kinds of rollers.Simultaneously, the contact-movable part of lower rollers, just bearing 13a is placed near the place of cleaning liquid bath 50, as shown in Fig. 3 and 4, and arranges to such an extent that cleaning fluid can not be entered wherein.Simultaneously, in above-mentioned many rollers, the axle 11a of driven roller 11 passes side plate 16, is supported by the bearing 21a that is configured in crossbeam 21 front ends.In addition, the axle 11a by bearing 21a supporting is connected on the drive motors 30 by bevel gear 11b.

Two blocks of side plates 16 are furnished with opposed facing prolongation 17 separately, and a connecting rod 18 is connected with the front end of prolongation 17.Article one, hawser 27 is guided by a wire rope pulley that is contained in second pillar, 23 tops, and second pillar is bearing in again on the base 22, and an end of hawser 27 is fixed on the connecting rod 18, and counterweight block 26 is suspended in the other end of hawser 27.The counterweight block 26 that hawser 27 is applied tension force is made up of several single pouring weights, thereby can regulate total weight.

Pneumatic or hydraulic cylinder 25 usefulness pins are connected on the base 22, and an actuating rod 25a is outstanding from cylinder 25 tops, extends to connecting rod 18 always.As shown in Figure 4, connecting rod 18 and being connected each other of actuating rod 25a can slide mutually, and a baffle plate 25b is housed at the top of actuating rod, use to make that connecting rod 18 is unlikely to break away from away from actuating rod 25a.

To do one to the operation of the washer of the present invention of said structure below describes.

As shown in Figure 2, if panel 60 be arrange make panel 60 inner surface down, and panel 60 is to overturn at leisure, if and the actuating rod 25a of cylinder 25 upwards lifts, so shown in the dotted line among Fig. 2, because the gravity of counterweight block 26, roller sub-assembly 10 is done the pivot rotation along clockwise.

So if drive motors begins to start, driven roller 11 and other dispose nigh roller and all rotate by certain speed, therefore, cleaning tape 40 is also done circular flow by the upper and lower enclosure space.In this case, the unnecessary cleaning fluid of cleaning tape 40 in its operation by between driven roller 11 and the intermediate calender rolls 12,12 time because the pressure effect is removed, thus cleaned the hermetic unit 3 of panel '.After cleaning tape 40 was walked around upper roll, cleaning tape is stressed again removed excess liquid, thereby impurity can be removed from cleaning tape.

After a period of time, if drive pneumatic linear actuator 25, roller sub-assembly 10 just is pivoted with counterclockwise at such process operation, throws off from the hermetic unit of panel thereby make by the cleaning tape 40 of roller guiding.

As mentioned above, the washer of colour cathode ray tube of the present invention sealing utilizes a cleaning tape tightly to clean hermetic unit by moving as horizontal direction below panel, therefore can prevent to cause owing to being splashed into of cleaning fluid the damage of phosphorescent layer largely.

That is exactly that the upper part of the cleaning tape of touch panel hermetic unit holds the cleaning fluid of right quantity, so just needn't worry that cleaning fluid can splash.In addition, even there is a spot of cleaning fluid to splash, but because panel is positioned on the cleaning tape, cleaning fluid seldom may overcome force of gravity and jump on the panel.

In addition, because the gravity of the pouring weight that hangs, cleaning pressure remains on the proper level, thereby the amount of spilling of cleaning fluid has been reduced widely.Just according to the present invention, the installation position of tube face plate is not how, the pouring weight that hangs has guaranteed the hermetic unit of cleaning tape with certain pressure touch panel, thereby avoided the variation of the contact pressure that the variation owing to amount of spring compression causes, Korea S's utility model that Here it is discloses the shortcoming of the common technology of delivering for 83-511 number.

Therefore, according to the present invention, the cleaning pressure that puts on the cleaning tape is to maintain on the constant level, has consequently not only carried out cleaning effectively, but also has avoided the too fast consume of cleaning tape, thereby prolonged the useful life of cleaning tape.

In the described in the above roller, lower rollers is installed by this way, promptly, the excircle of roller just slightly touches the cleaning fluid that is contained in the groove, the bearing that is installed in both sides then is configured in the outside of cleaning fluid storage tank, thereby prevented that it from contacting the quick corrosion of a movable part, unlike the sort of device of common usefulness, its whole roller is immersed in the cleaning fluid itself.

According to the test that the inventor carried out, common contact one movable part of the washer of usefulness, i.e. the bearing portions of roller, be two months its useful life, and be approximately 1 year the useful life of bearing of the present invention six months in addition.

Comprehensively above-mentioned, the characteristics of washer of the present invention roughly can be summarized as following 3 points:

1) floor level is down in the infringement to the interior zone phosphorescent layer that the water droplet that spills owing to cleaning fluid causes.

2) how the placement location of tube face plate does not put on the cleaning pressure of preparing the part of cleaning and is always keeping, and can increase or reduce this cleaning pressure. Therefore, can greatly prolong the service life of cleaning tape.

3) also prolong widely the service life of the bearing portions of bottom roller.

Claims (2)

1, a kind of washer that is used for the colour cathode ray tube hermetic unit comprises: one is cleaned liquid bath,, a cleaning tape, a roller sub-assembly that is used to guide this cleaning tape, with a device that makes this cleaning tape contact and break away from this sealing portion of panel, it is characterized in that this roller sub-assembly comprises that a plurality of being installed in almost is on the same horizontal plane and upper roll that keep at a certain distance away, have at least one to be to install to such an extent that can move up and down in the described upper roll, to cause the described cleaning tape can be from following to hang down direction contact and break away from the hermetic unit of panel, lower rollers is placed on the such position, its lower part is immersed in the cleaning fluid of rinse bath, a device that makes cleaning tape contact and break away from this sealing portion of panel comprises: one from a side of this roller sub-assembly with a hawser (a 27) suspension counterweight block (26), and this roller sub-assembly with pivot suspension on first pillar (20), an and hydraulic pressure or pneumatic linear actuator (25) that this roller sub-assembly is pivoted.

2, the washer that is used for the colour cathode ray tube hermetic unit as claimed in claim 1, it is characterized in that intermediate calender rolls (12) is one side or the both sides that closely are contained in driven roller (11), and leave certain interval therebetween, like this, described cleaning tape along one side of driven roller (11) or both sides can be squeezed when passing.